Publications
Recent Publications:
195. J. Karunawan, P. Suryadi, L. Mahfudh, S.P. Santosa, A. Sumboja, F. Iskandar, Truncated octahedral shape of spinel LiNi0.5Mn1.5O4 via a solid-state method for Li-ion batteries, Energy & Fuels 36 (23) 14453–14463 (2023) DOI: https://doi.org/10.1021/acs.energyfuels.2c03507
Abstract. Spinel cathode LiNi0.5Mn1.5O4 (LNMO) has attracted high interest owing to its high-energy-density, cobalt-free, and high-voltage operation. For further application, the solid-state method as the simpler parameter control is favorable for scalable synthesis of LNMO cathode materials. However, the solid-state method has the disadvantage of producing irregular particle shapes that form the non-uniform cathode-electrolyte interphase...
194. C. Eldona, N.H. Hawari, F.H. Hamid, W. Dempwolf, F. Iskandar, E. Peiner, H.S. Wasisto, A. Sumboja, A Free-Standing Polyaniline/Silicon Nanowire Forest as the Anode for Lithium-ion Batteries, Chemistry - An Asian Journal 17 (24), e202200946 (2022)
193. O.B. Abdillah, O. Floweri, M.A. Irham, A.H.Aimon, T. Ogi, F. Iskandar, Structural Modulation of Exfoliated Graphene via a Facile Post-ultrasonication Treatment toward Enhanced Electrochemical Properties of Supercapacitor Electrode, Energy and Fuels 36 (23) 14453–14463 (2022). DOI: https://doi.org/10.1021/acs.energyfuels.2c02809
Abstract. Graphene has been gaining tremendous attention as an active material for energy storage devices owing to its large surface area, high electrical conductivity, and high electrochemical stability. However, the restacking of graphene layers during the synthesis process has become one issue that can reduce electrode performance. In this work, the structure of electro-exfoliated graphene (EG) is regulated to improve its electrochemical properties...
192. T. Hirano, S. Kaseda, K.L.A. Cao, F. Iskandar, E. Tanabe, and T. Ogi, Multiple ZnO Core Nanoparticles Embedded in TiO2 Nanoparticles as Agents for Acid Resistance and UV Protection, ACS Appl. Nano Mater 5, 10, 15449–15456 (2022)
191. A.S. Santika, F.A. Permatasari, R. Umami, D.A.M. Muyassiroh, M.A. Irham, P. Fitriani, and F. Iskandar, Revealing the Synergetic Interaction between AMino and Carbonyl Functional Groups on the Electronic and Optical Properties of Carbon Dots, Physical Chemistry Chemical Physics, 24, 27163-27172 (2022). DOI: https://doi.org/10.1039/D2CP03401H
Abstract. Nitrogen and oxygen-based functionalized carbon dot (CDs) surfaces have attracted significant attention due to their ability to tailor the optical and electronic properties of CDs. However, the complex synthesis process and structure of the functionalized CDs hinder an in-depth understanding of their mechanism, limiting their potential applications. Herein, we report CDs functionalized with amino and carbonyl functional groups and reveal ....
190. P.Y.E. Koraag, A.M. Firdaus, N.H. Hawari, A.D. Refino, W. Dempwolf, F.Iskandar, E.Peiner, H.S. Wasisto, A. Sumboja, Afriyanti, Covalently Bonded Ball-Milled Silicon/CNT Nanocomposite as Lithium-Ion Battery Anode Material, Batteries 8 (165) (2022)
189. K.L.A. Cao, F. Iskandar, E. Tanabe and T. Ogi, Recent Advances in the Fabrication and Functionalization of Nanostructured Carbon Spheres for Energy Storage Applications, KONA Powder and Particle Journal, 2023016 (2022)
188. D.A.M. Muyassiroh, F.A. Permatasari and F. Iskandar, Machine Learning-driven Advanced Development of the Luminescent Carbon-based Nanomaterials in Practical Application, J Mater Chem C, 10 (46), 17431-17450 (2022). DOI: https://doi.org/10.1039/D2TC03789K
Abstract. Carbon-based luminescent nanomaterials (CLNMs) have been progressively developed and exhibit excellent performance in broad applications. However, the unclear formation mechanism and obtained complex structure of CLNMs, induced a lack of deep understanding of the synthesis–structure–properties–performance relationship, hindering further development in practical application. The recent development of CLNMs in various applications primarily relied on traditional “trial-and-error” ...
187. F.A. Permatasari, R. Umami, C.D.D. Sundari, T.R. Mayangsari, A.L. Ivansyah, F. Muttaqien, T. Ogi, and F. Iskandar, New insight into pyrrolic-N site effect towards the first NIR window absorption of pyrrolic-N-rich carbon dots, Nano Research, 2023, i DOI: https://doi.org/10.1007/s12274-022-5131-7
Abstract. Controlled C–N configurations, i.e., pyrrolic-N, pyridinic-N, and graphitic-N, are promising strategies to tailor the carbon dots’ (CDs) optical properties into the first near infrared (NIR) window (650–900 nm), a responsive range for biomedical application. However, a deep understanding of the role of the C–N configuration in the CDs’ properties is still challenging .....
186. I.C. Sophiana, F. Iskandar, H. Devianto, N. Nishiyama, Y.W. Budhi, Coke-Resistant Ni/CeZrO2 Catalysts for Dry Reforming of Methane to Produce Hydrogen-Rich Syngas, Nanomaterials 12 (9) 1556 (2022)
185. E.CS. Mahen, F.A. Permatasaria, O. Floweri, B.W. Nuryadin, M.A. Irham, S.Z. Bisrie, Suprijadi, A.H. Aimon, F. Iskandar, Evolutions of the optical properties in green-emitting MAPbBr3 perovskite nanoplatelets/polymethyl methacrylate (PMMA) composite films for light-emitting diode applications, Journal of Luminescence 248, 118954 (2022)
184. A.L. Sidiq, O. Floweri, J. Karunawan, O.B. Abdillah, S.P. Santosam, F. Iskandar, NCM cathode active materials reproduced from end-of-life Li-ion batteries using a simple and green hydrometallurgical recycling process, Mater.Res. Bul 153, 111901 (2022) DOI: https://doi.org/10.1016/j.materresbull.2022.111901
Abstract. LiNi1/3Co1/3Mn1/3O2 (NCM 111) cathode material was reproduced from end-of-life lithium-ion batteries (LIBs) via a green hydrometallurgical process including environmentally friendly DL-malic acid leaching, oxalate co-precipitation, and heat treatment. The leaching reached 95% efficiency by using....
183. Y. Kitamoto, K.L.A. Cao, P.H. Le, O. Abdillah, F. Iskandar, T. Ogi, A sustainable approach for preparing porous carbon spheres derived from Kraft lignin and sodium hydroxide as highly packed thin film electrode materials, Langmuir 38, 11, 3540–3552 (2022)
182. M.A. Irham, F. Baskoro, F.A. Permatasari, F.Iskandar, Towards Stable High Performance Tin Halide Perovskite: First-principles Insight on the Incorporation of Bivalent Dopant, The Journal of Physical Chemistry C 126, 11, 5256–5264 (2022). DOI: https://doi.org/10.1021/acs.jpcc.1c10315
Abstract. Tin vacancy in CsSnI3 is a major issue that hinders halide perovskite solar cell performance stability and because of its increased p-type dopant concentration, changes its metallicity and hinders its recombination. To overcome this issue, we propose a bivalent dopant (i.e., Ca and Mn) in CsSnI3, acting as an electron donor. Here, we demonstrate by the first-principles study that...
181. J. Karunawan, O. Floweria, S.P. Santosa, A.Sumboja, and F. Iskandar, Stable layered-layered-spinel structure of the Li1.2Ni0.13Co0.13Mn0.54O2 cathode synthesized by ball-milling assisted solid-state method, Journal of Electroanalytical Chemistry 907, 116050 (2022) DOI: https://doi.org/10.1016/j.jelechem.2022.116050
Abstract. Li-rich NMC with a chemical formula of Li1.2Ni0.13Co0.13Mn0.54O2, a type of Li-rich cathode materials built of layered-layered structure, have been gaining interest due to its high specific capacity. However, they suffer from low Coulombic efficiency, poor cycling stability, and poor rate capability. In this work, we have successfully prepared the layered-layered-spinel (LLS) of Li-rich NMC synthesized via a ball-milling assisted solid-state method. The LLS structure can be...
180. C.D.D. Sundari, A.L. Ivansyah, O. Floweri, I.M. Arcana and F. Iskandar, Insights into the intermolecular interactions and temperature-concentration dependence of transport in ionic liquid-based EMI-TFSI/LiTFSI electrolytes, New Journal of Chemistry, 46, 3966 - 3977 (2022) DOI: https://doi.org/10.1039/D1NJ05489A
Abstract. 1-Ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (EMI-TFSI) is one type of ionic-liquids (ILs) that attracts much attention for its application as lithium-ion battery electrolyte due to its large diffusion coefficient, wide temperature range of liquid form, and high thermal stability. To gain insight on the performances of the EMI-TFSI, the intermolecular interactions and temperature-concentration dependence of ion transport in EMI-TFSI/LiTFSI electrolytes were investigated using density functional theory (DFT) and molecular dynamics (MD). The DFT calculation results showed..
179. R. Umami, F.A. Permatasari, D.A.M. Muyassiroh, A.S. Santika, C.D.D. Sundari, A.L. Ivansyah, T. Ogi and F. Iskandar , A rational design of Carbon Dots via the combination of Nitrogen and Oxygen Functional Groups toward the first NIR window Absorption, J. Mater. Chem. C, 10, 1394 - 1402 (2022) DOI: https://doi.org/10.1039/D1TC04951H
Abstract. Carbon Dots (CDs) that exhibited a First Near Infra-red (NIR) Window absorption was designed by a combination of Nitrogen and Oxygen surface functional groups. The Time-Dependent Density Functional Theory (TD-DFT) calculation is initially used to investigate the appropriate combination of N and O surface functional groups that effectively generate a first NIR window absorption. Guided by the TD-DFT predictions, ...
178. F.A. Permatasari, F. Nakul, T. Mayangsari, A. Aimon, B. Nuryadin, S.Z. Bisri, Z. Satria, T. Ogi, F. Iskandar, Solid-state Nitrogen-doped Carbon Nanoparticles with Tunable Emission Prepared by Microwave-assisted Method, RSC Advances, 11(63) 39917-39923, 2021 DOI: https://doi.org/10.1039/D1RA07290K
Abstract. Tunable emissive solid-state carbon nanoparticles (CNPs) have been successfully synthesized by a facile synthesis through microwave irradiation. Modulating microwave interaction with the sample to generate abrupt localized heating is a long-term challenge to tailor the photoluminescence properties of CNPs. This study systematically...
177. M.A. Irham, F. Muttaqien, S.Z. Bisri, and F. Iskandar, Role of Intrinsic Points Defects on the Electronic Structure of Metal–Insulator Transition h-FeS, J. Phys. Chem. Lett. 12(44) 10777–10782 (2021) DOI: https://doi.org/10.1021/acs.jpclett.1c02360
Abstract. Hexagonal iron sulfide (h-FeS) offers huge potential in the development of metal-insulator transition devices. A stoichiometric h-FeS is hard to obtain from its natural iron deficiency. The effect of this iron deficiency on the electronic properties is still obscure. Here, we performed a charged point defect calculation in h-FeS ...
176. F.A. Permatasari, H.E. Masitoh, E.C.S. Mahen, B.W. Nuryadin, A.H. Aimon, Y.M. Syah, F. Iskandar, Synergetic effect of the surface ligand and SiO2 driven photoluminescence stabilization of the CH3NH3PbBr3 perovskite magic-sized clusters, Scientific Reports 11(1) 22211 (2021) DOI: https://doi.org/10.1038/s41598-021-01560-4 PDF (Open Access)
Abstract. Zero-dimensional Perovskite Magic-size Clusters play crucial roles in understanding and controlling nucleation and growth of semiconductor nanoparticles. However, their metastability behavior is a critical hindrance for reliable characterizations. Here, we report the first demonstration of using an excess amount of surface ligand and SiO2 as novel passivation ...
175. A.P. Nugroho, N.H. Hawari,B. Prakoso, A.D. Refino, N. Yulianto, F. Iskandar, E. Kartini, E. Peiner, H.S. Wasisto, and A. Sumboja, Vertically Aligned n-Type Silicon Nanowire Array as a Free-Standing Anode for Lithium-Ion Batteries, Nanomaterials 11(11) 3137 (2021) DOI: https://doi.org/10.3390/nano11113137, PDF (Open Access)
174. A.P. Yuda, P.Y.E. Koraag, F. Iskandar, H.S. Wasisto, A. Sumboja, Advances of the top-down synthesis approach for high-performance silicon anodes in Li-ion batteries, Journal of Materials Chemistry A 9(35) 18906 - 18926 (2021) DOI: https://doi.org/10.1039/D1TA02711E , PDF (Open Access)
173. A.D. Refino, N. Yulianto, I. Syamsu, A.P. Nugroho, N.H. Hawari, A. Syring, E. Kartini , F. Iskandar, T. Voss, A. Sumboja, E. Peiner, H.S. Wasisto, Versatilely tuned vertical silicon nanowire arrays by cryogenic reactive ion etching as a lithium-ion battery anode, Scientific Reports 11 (1) (2021) DOI: https://doi.org/10.1038/s41598-021-99173-4, PDF (Open Access)
172. K.L.A. Cao, Y. Kitamoto, F. Iskandar, T. Ogi, Sustainable porous hollow carbon spheres with high specific surface area derived from Kraft lignin, Advanced Powder Technology 32 (6) 2064 - 2073 (2021)DOI: https://doi.org/10.1016/j.apt.2021.04.012
171. O.B. Abdillah, O. Floweri, T.R. Mayangsari, S.P. Santosa, T. Ogi and F. Iskandar, Effect of H2SO4/H2O2 pre-treatment on electrochemical properties of exfoliated graphite prepared by an electro-exfoliation method, RSC Advances, 11, 10881-10890 (2021) DOI: https://doi.org/10.1039/D0RA10115J , PDF (Open Access)
Abstract. The effect of pre-treating graphite sheets in a H2SO4/H2O2 solution before electro-exfoliation is reported. It was revealed that the volume fraction of H2SO4 to H2O2 during pre-treatment could control the degree of exfoliation of the resulting exfoliated graphite (EG). X-ray diffraction (XRD), Raman, and Fourier transform...
170. Indriyati, I. Primadona, F.A. Permatasari, M.A. Irham, M. Nasir and F. Iskandar, Recent advances and rational design strategies of carbon dots towards highly efficient solar evaporation, Nanoscale, 13, 7523-7532 (2021) DOI: https://doi.org/10.1039/D1NR00023C
Abstract. Solar evaporation using photothermal materials is an environmentally friendly and feasible solution to overcome the water scarcity issue by utilizing the abundant solar energy source. Some key points for efficient solar-to-thermal energy conversion have been extensively studied. Among them, ...
169. N. Nabila, S.R. Hassan, G.P. Larasati, B. Yohan, R.T. Sasmono, A.C. Adi, F. Iskandar, H. Rachmawati, The Influence of Surface Charge on The Antiviral Effect of Curcumin Loaded in Nanocarrier System, Pharm Nanotechnol 9 (2021) DOI: https://doi.org/10.2174/2211738509666210204121258
168. F. A. Permatasari, M.A. Irham, S.Z. Bisri, F. Iskandar, Carbon-based Quantum Dots for Supercapacitors: Recent Advances and Future Challenges, Nanomaterials 11(1), 91 (2021) DOI: https://doi.org/10.3390/nano11010091, PDF (Open Access)
Abstract. Carbon-based Quantum dots (C-QDs) are carbon-based materials that experience the quantum confinement effect, which results in superior optoelectronic properties. In recent years, C-QDs have attracted attention significantly and have shown great application potential as a high-performance supercapacitor device. C-QDs (either as a bare electrode or composite) give a new...
167. M.W.A. Sektiono, F.A. Permatasari, A.H. Aimon, F. Iskandar, Rapid Growth of the CH3NH3PbCl3 Single Crystal by Microwave Irradiation, RSC Advances, 11 (3) 1360-1366 (2021) DOI: https://doi.org/10.1039/D0RA09328A , PDF (Open Access)
Abstract. We report a rapid growth of the CH3NH3PbCl3 single crystal through microwave irradiation. A systematic evaluation of the structural and optical properties of the obtained single crystal was also conducted. 1 minute is the optimum microwave irradiation time that generated ...
166. R.M. Putri, C.D Sundari, O. Floweri, T.R. Mayangsari, S.P. Santosa, I.M. Arcana, F. Iskandar, PEO/PVA/LiOH Solid Polymer Electrolyte Prepared via Ultrasound-assisted Solution Cast Method, Journal of Non-Crystalline Solids 556, 120549 (2021) DOI: https://doi.org/10.1016/j.jnoncrysol.2020.120549
165. S. Refly, O. Floweri, T.R. Mayangsari, A. Sumboja, S.P. Santosa, T. Ogi, F. Iskandar, Regeneration of LiNi1/3Co1/3Mn1/3O2 Cathode Active Materials from End-of-Life Lithium-ion Batteries through Ascorbic Acid Leaching and Oxalic Acid Coprecipitation Processes, ACS Sustain. Chem. Eng. 8(43) 16104–16114 (2020) DOI: https://doi.org/10.1021/acssuschemeng.0c01006
Abstract. One of the emerging issues in solving the electronic waste problem is to address the growing amount of end-of-life Li-ion battery (LIB) waste. In this work, the regeneration of LiNi1/3Co1/3Mn1/3O2 (NCM 111) cathode active materials from end-of-life LIBs was successfully carried out via an easy, fast, and environmentally friendly...
164. I.C.Sophiana, A.Topandi, F.Iskandar, H.Devianto, N.Nishiyama, Y.W.Budhi, Catalytic oxidation of benzene at low temperature over novel combination of metal oxide based catalysts: CuO, MnO2, NiO with Ce0.75Zr0.25O2 as support, Materials Today Chemistry, 17, 100305 (2020) DOI: https://doi.org/10.1016/j.mtchem.2020.100305
163. A.M.Rahmatika, Y.Goi, T. Kitamura, Y. Morita, F. Iskandar, T. Ogi, Silica-supported carboxylated cellulose nanofibers for effective lysozyme adsorption: Effect of macropore size, Advanced Powder Technology, 31(7) 2932-2941 (2020) DOI: https://doi.org/10.1016/j.apt.2020.05.021
162. A. Fauzi, D.A. Hapidin, M.M. Munir, F. Iskandar, Khairurrijal, A superhydrophilic bilayer structure of a nylon 6 nanofiber/cellulose membrane and its characterization as potential water filtration media, RSC Advances, 10, 17205-17216 (2020) DOI: https://doi.org/10.1039/D0RA01077D , PDF (Open Access)
161. R. Murniati, H.D. Rahmayanti, F.D. Utami, A. Cifriadi, F. Iskandar, M. Abdullah, Effects of magnetically modified natural zeolite addition on the crosslink density, mechanical, morphological, and damping properties of SIR 20 natural rubber reinforced with nanosilica compounds, Journal of Polymer Research volume 27, 37 (2020) DOI: https://doi.org/10.1007/s10965-020-2013-0
160. R.D. Septianto, L. Liu, F. Iskandar, N, Matsushita, Y. Iwasa, S.Z. Bisri, On-Demand Tuning of Charge Accumulation and Carrier Mobility in Quantum Dots Solids for Electric Transport and Energy Storage Devices, NPG Asia Materials, 12 (33) (2020) DOI: https://doi.org/10.1038/s41427-020-0215-x, PDF (Open Access)
159. K.L.A. Cao, S. Taniguchi, T.T. Nguyen; A.F. Arif; F. Iskandar, T. Ogi, Precisely Tailored Synthesis of Hexagonal Hollow Silica Plate Particles and their Polymer Nanocomposite Films with Low Refractive Index, Journal of Colloid & Interface Science, 571, 378-386 (2020) DOI: https://doi.org/10.1016/j.jcis.2020.03.064
158. T. Ogi, H. Fukazawa, A.M. Rahmatika, T. Hirano, K. Cao, F. Iskandar, Improving the crystallinity and purity of monodisperse Ag fine particles by heating colloidal sprays in-flight, Industrial & Engineering Chemistry Research 59(13) 5745-5751 (2020) DOI: https://doi.org/10.1021/acs.iecr.9b05482
157. S.A. Wella, Y. Hamamoto, F. Iskandar, Suprijadi, Y. Morikawa, and I. Hamada, Atomic and Molecular Adsorption on Single Platinum Atom at the Graphene Edge: A Density Functional Theory Study, Journal of Chemical Physics 152 (10), 104707 (2020) DOI: https://doi.org/10.1063/5.0002902
156. A. Rajak, D.A Hapidin, F. Iskandar, M.M. Munir, K. Khairurrijal, K. Electrospun nanofiber from various source of expanded polystyrene (EPS) waste and their characterization as potential air filter media, Waste Management 103, 76-86 (2020) DOI: https://doi.org/10.1016/j.wasman.2019.12.017
155. A.H. Aimon, R. Hidayat, D. Rahmawati, R. Sutarto, F.A. Permatasari, F. Iskandar, Facile Deposition of Reduced Graphene Oxide-Based Transparent Conductive Film with Microwave-Assisted Method, Thin Solid Films 692, 137618 (2019) DOI: https://doi.org/10.1016/j.tsf.2019.137618
154. A. Zulfi, D.A. Hapidin, M.M. Munir, F. Iskandar, Khairurrijal, Synthesis of Nanofiber Membrane from Acrylonitrile Butadiene Styrene (ABS) Waste Using Electrospinning as Air Filtration Media, RSC Advances 9 (53), 30741-30751 (2019) DOI: https://doi.org/10.1039/C9RA04877D , PDF (Open Access)
153. R. Maharsi. A. F. Arif, T. Ogi, H. Widiyandari, F. Iskandar, Electrochemical properties of TiOx/rGO composite as an electrode for supercapacitor, RSC Advances, 9 (48), 27896-27903 (2019) DOI: https://doi.org/10.1039/C9RA04346B, PDF (Open Access)
Abstract. Transition metal oxides are known as the active materials for capacitors. As a class of transition metal oxide, Magnéli phase TiOx is particularly attractive because of its excellent conductivity. This work investigated the electrochemical characteristics of TiOx and its composite with reduced graphene oxide (rGO). Two types of TiO...
152. S. Rahastama, A. Waris, S. Viridi, F. Iskandar, Optimization of surface passivation parameters in [147Pm]-Si planar pn junction betavoltaic based on analytical 1-D minority carrier diffusion equation approaches, Applied Radiation and Isotopes, 151, 226-234 (2019) DOI: https://doi.org/10.1016/j.apradiso.2019.03.030
151. R. Abdul, H. Dian, F. Iskandar, Munir, Muhammad, Khairurrijal, Controlled Morphology of Electrospun Nanofibers from Waste Expanded Polystyrene for Aerosol Filtration, Nanotechnology, 30(42) (2019) DOI: https://doi.org/10.1088/1361-6528/ab2e3b
150. C.S. Yudha, S.U. Muzayanha, H. Widiyandari, F. Iskandar, W. Sutopo and A. Purwanto, Synthesis of LiNi0.85Co0.14Al0.01O2 Cathode Material and its Performance in an NCA/Graphite Full-Battery, Energies 12, 1886 (2019) DOI: https://doi.org/10.3390/en12101886, PDF (Open Access)
149. M. Taspika, F.A. Permatasari, B.W. Nuryadin, T.R. Mayangsari, A.H. Aimon, F. Iskandar, Simultaneous ultraviolet and first near-infrared window absorption of luminescence carbon dots/PVA composite film, RSC Advances 9 (13) 7375-7381 (2019) DOI: https://doi.org/10.1039/C8RA09742A , PDF (Open Access)
Abstract. Liquid Carbon Dots (CDs) were successfully synthesized by hydrothermal method using urea and citric acid as raw materials. TEM images confirmed that the CDs have a spherical shape with a homogeneous distribution. The as-prepared liquid CDs could absorb ultraviolet (UV) and first near infra-red (NIR) window simultaneously. However, the photoluminescence (PL) of the liquid CDs was damaged by their quenching effect. To overcome this issue, ...
148. C. Yang, K.K. Chan, G. Xu, M. Yin, G. Lin, X. Wang, W-J. Lin, M.D. Birowosuto, S. Zeng, T. Ogi, K. Okuyama, F. A. Permatasari, F. Iskandar, C-K. Chen, K-T. Yong, Biodegradable Polymer-Coated Multifunctional Graphene Quantum Dots for Light-Triggered Synergetic Therapy of Pancreatic Cancer, ACS Applied Materials and Interfaces 11 (3), pp 2768–2781 (2019) DOI: https://doi.org/10.1021/acsami.8b16168
147. F. Iskandar, N.A. Zen, T.R. Mayangsari, A.H. Aimon, A. Pramana, Development of faujasite-type zeolite and iron oxide as mixed catalyst for aquathermolysis reaction of heavy oil, Materials Research Express 6(2),026206 (2019) DOI: https://doi.org/10.1088/2053-1591/aafc57
146. M . Taspika, L. Nuraeni, D. Suhendra, F. Iskandar, Using Smartphone’s magnetic sensor for low-cost experiment in studying magnetic field due to Helmholtz and anti-Helmholtz coil, Physics Education 54 (1) 015023 (2019) DOI: https://doi.org/10.1088/1361-6552/aaefb4
145. F. Iskandar, A. Fauziah, F.A. Permatasari, T.R. Mayangsari, A. H. Aimon, Physicochemical Study of Multicolor Boron Carbon Oxynitride (BCNO) Using a Urea Combustion Method, Materials Research Express, 6 (2) (2018) DOI: https://doi.org/10.1088/2053-1591/aaf29b
144. F. Iskandar, B. Setiawan, T. R. Mayangsari, R. Maharsi, A. Purwanto and A. H. Aimon, Electrochemical impedance analysis of polyvinylpyrrolidone-coated sulfur/reduced graphene oxide (S/rGO) electrode, Materials Research Express, 6 (2) (2018) DOI: https://doi.org/10.1088/2053-1591/aaee41
143. N. Nuraeni, F. Iskandar, A. Waris, F. Haryanto, E. Hiswara, The enhancement on thermoluminescence response of rare earth metal-doped CaSO4/CaF2-based thermoluminescence dosimetry driven by polytetrafluoroethylene decomposition, Materials Research Express, 5(10), 106201 (2018) DOI: https://doi.org/10.1088/2053-1591/aad9e5
142. R.D. Septianto, F. Iskandar, M. Abdullah, K. Khairurrijal and M.H. Lee, Effect of polystyrene latex addition on size and pore volume of porous calcium oxide particles prepared by spray-pyrolysis method and its ability for SO2 retention, J. Eng. Tech. Sci., 50(2), 240-254 (2018) DOI: https://doi.org/10.5614/j.eng.technol.sci.2018.50.2.6 , PDF (Open Access)
141. F Iskandar, O.B. Abdillah, E. Stavila, and A. H. Aimon, The Influence of Copper Addition on Electrical Conductivity and Charge Transfer Resistance of Reduced Graphene Oxide (rGO), New Journal of Chemistry, 42(19) 16362-16371 (2018) DOI: https://doi.org/10.1039/C8NJ03614D
Abstract. The electrical conductivity and charge transfer resistance (Rct) of reduced graphene oxide (rGO) with the addition of copper are reported. The samples of rGO with copper addition were successfully synthesized via in situ chemical exfoliation using a microwave-assisted technique. Annealing was performed at ...
140. FA Permatasari, H Fukazawa, T Ogi, F Iskandar, and Kikuo Okuyama, Design of Pyrrolic-N-rich Carbon Dots with Absorption in the First Near-Infrared Window for Photothermal Therapy, ACS Appl. Nano Mater 2018 ,1 (5), pp 2368–2375 (2018) DOI: https://doi.org/10.1021/acsanm.8b00497
139. B. W. Nuryadin, Y. Suryani, Y. Yuliani, S. Setiadji, A.Y. Nuryantini and F. Iskandar, Sintering time optimization on red photoluminescence properties of manganese-doped boron carbon oxynitride (BCNO:Mn) phosphor, Materials Research Express 2018 5, 046246 (2018) DOI: https://doi.org/10.1088/2053-1591/aabbd4
138. F. Iskandar, A. Fajri, N. Nuraeni, E. Stavila, A. H. Aimon and B. W. Nuryadin, The effect of addition of PTFE or urea on luminescence response of copper-doped lithium tetraborate, Materials Research Express, 5, 044003 (2018) DOI: https://doi.org/10.1088/2053-1591/aab8eb
137. A. Zulfi, M. Munir, D. Hapidin, A. Rajak, D. Edikresnha, F. Iskandar, Khairurrijal, Air filtration media from electrospun waste high-impact polystyrene fiber membrane, Materials Research Express, 5(3) 035049 (2018) DOI: https://doi.org/10.1088/2053-1591/aab6ef
136. A. Wibowo, R. Indrawan,U. Triadi, A. Aimon, F. Iskandar, H. ardy, Simple Preparation of Fenton Catalyst@Bacterial Cellulose for Waste Water Treatment, Materials Research Express, 5 024005 (2018) DOI: https://doi.org/10.1088/2053-1591/aaac86
135. Takahiko Makino, Satoshi Nagai, Ferry Iskandar, Kikuo Okuyama, and Takashi Ogi, Recovery and Recycling of Tungsten by Alkaline Leaching of Scrap and Charged Amino Group Assisted Precipitation, ACS Sustainable Chemistry & Engineering, 6(3), 4246–4252 (2018) DOI: https://doi.org/10.1021/acssuschemeng.7b04689
134. M. Sianipar, S.H. Kim, Khoiruddin, F. Iskandar and I.G. Wenten, Functionalized carbon nanotube (CNT) membrane: progress and challenges, RSC Adv., 7, 51175 (2017) DOI: https://doi.org/10.1039/C7RA08570B, PDF (Open Access)
133. F. Iskandar, U. Hikmah, E. Stavila, A.H. Aimon, Microwave-Assisted Reduction Method under Nitrogen Atmosphere for Synthesis and Electrical Conductivity Improvement of Reduced Graphene Oxide (rGO), RSC Advances, 7, 52391 (2017) DOI: https://doi.org/10.1039/C7RA10013B , PDF (Open Access)
Abstract. A facile method to synthesize rGO using a microwave-assisted method under N2-atmosphere conditions is reported. Two different reducing agents were used in this research, hydrazine hydrate and L-ascorbic acid (L-AA). The reduction of graphene oxide was completed in 3 minutes by the microwave-assisted method under N2-atmosphere conditions. The structures and morphologies of both rGOs prepared by this new method were confirmed by ...
132. B. Setiawan, R. Septianto, D. Suhendra, F.Iskandar, Measurement of 3-axis Magnetic Fields Induced by Current Wires using a Smartphone in Magnetostatics Experiments, Phys. Educ, 52, 065011 (2017) DOI: https://doi.org/10.1088/1361-6552/aa83e3
131. H.I. Umam, A.H. Aimon, F. Iskandar, Preliminary study of the effect microwave-heating on the morphology and surface area of NaX zeolite, Materials Science Forum, 895, 69-72 ( 2017) DOI: https://doi.org/10.4028/www.scientific.net/MSF.895.69
130. U. Saleem, F. A. Permatasari, F. Iskandar, T. Ogi, K. Okuyama, Y. Darma, M. Zhao, K. P. Loh, A. Rusydi, P. Coquet, M. D. Birowosuto, and H. Wang, Surface Plasmon Enhanced Nitrogen-doped Graphene Quantum Dots Emission by Single Bismuth Telluride Nanoplates, Advanced Optical Materials, 1700176 (2017) DOI: https://doi.org/10.1002/adom.201700176
129. A. F. Arif, R. Balgis, T. Ogi, F. Iskandar, A. Kinoshita, K. Nakamura, K. Okuyama: Highly conductive nano-sized Magnèli phases titanium oxide (TiOx), Scientific Reports, 7(1):3646 (2017). DOI: https://doi.org/10.1038/s41598-017-03509-y , PDF (Open Access)
128. M. Husnah, H. Fakhri, F. Rohman, A. Aimon, F. Iskandar, A Modified Marcano Method for Improving Electrical Properties of Reduced Graphene Oxide (rGO), Mater.Res.Express 4(6), 2017 DOI: https://doi.org/10.1088/2053-1591/aa707f
127. R. Maharsi, R. D. Septianto, F. Rohman, F. Iskandar, H. Devianto, Y. W. Budhi, Effect of temperature and precursor concentration on the morphology of Cu/γ-Al2O3 prepared via urea combustion method, Mater. Res. Express, 4 (4) (2017) DOI: https://doi.org/10.1088/2053-1591/aa685f
126. M. Arifin, Y. B. Rus, A. H. Aimon, F. Iskandar, T. Winata, M. Abdullah and K. Khairurrijal, Composited reduced graphene oxide (rGO) into LiFePO4/Li2SiO3 and its electrochemical impedance spectroscopy (EIS) properties, Mater. Res. Express, 4 (3), (2017) DOI: https://doi.org/10.1088/2053-1591/aa6463
125. T. Ogi, T. Makino, S. Nagai, W. Stark, F. Iskandar, K. Okuyama, Facile and efficient removal of tungsten anions using lysine-promoted precipitation for recycling high-purity tungsten, ACS Sustainable Chemistry & Engineering, 5 (4), 3141–3147, (2017) DOI: https://doi.org/10.1021/acssuschemeng.6b02934
124. A. Rajak, A. Sandi, D.A. Hapidin, M.M. Munir, F. Iskandar, Khairurrijal, Fabrication of electrospun nanofiber from waste expanded polystyrene for aerosol filtration application, Advanced Science Letters 23(6) 5729-5732 (2017) DOI: https://doi.org/10.1166/asl.2017.8815
123. B. W. Nuryadin, F. A. Permatasari, A. Y. Nuryantini, I. D. Faryuni, M. Abdullah and F. Iskandar, A Red Emitting of Manganese-doped Boron Carbon Oxynitride (BCNO) Phosphor Materials: Facile Approach and Photoluminescence Properties, RSC Advances, 7, 4161-4166, (2017) DOI: https://doi.org/10.1039/C6RA27018B, PDF (Open Access)
Abstract. BCNO (boron carbon oxynitride) phosphors have attracted attention due to their non toxicity, simple synthesis process, and high quantum efficiency. However, the tunable emission, particularly a red emission, is still challenging to achieve. In the present study, a bright red emission (emission wavelength 620 nm under 365 nm UV excitation) of a manganese-doped BCNO (BCNO:Mn) phosphor synthesized by a solid state method is reported. Without Mn-doping, the BCNO phosphor exhibited a bright blue emission that can...
122. R.D. Septianto, D. Suhendra and F. Iskandar, Utilisation of the magnetic sensor in a smartphone for facile magnetostatics experiment: magnetic field due to electrical current in straight and loop wires, Phys. Educ. 52 , 015015 (2017) DOI: https://doi.org/10.1088/1361-6552/52/1/015015
121. T. Ogi, T. Makino, E. Tanabe, F. Iskandar, K. Okuyama: Heat-treated Escherichia coli as a high-capacity biosorbent for tungsten anions, Bioresource Technology, 218, pp 140-145 (2016) DOI: https://doi.org/10.1016/j.biortech.2016.06.076
120. O. Arutanti, A. F. Arif, R. Balgis, T. Ogi, F. Iskandar, K. Okuyama: Tailored synthesis of macroporous Pt/WO3 photocatalyst with nanoaggregates via flame assisted spray pyrolysis, AIChE Journal, 62 (11),pp 3864-3873 (2016) DOI: https://doi.org/10.1002/aic.15349
119. A. Ahab, F. Rohman, F. Iskandar, F. Haryanto, I. Arif, A Simple Straightforward Thermal Decomposition Synthesis of PEG-covered Gd2O3(Gd2O3@PEG) Nanoparticles, Advanced Powder Technology, 27 (4), pp 1800-1805 (2016) DOI: https://doi.org/10.1016/j.apt.2016.06.012
Abstract. Paramagnetic polyethylene glycol (PEG) functionalized gadolinium oxide (Gd2O3@PEG) nanoparticles were synthesized by a facile thermal decomposition of gadolinium acetate hydrate (Gd(CH3CO2)3·XH2O) precursors in PEG-1000. PEG-1000 was used as a solvent, and as a size reducing and functionalizing agent. The advantages of the present method are that it is simple and relatively fast, and it only needs a small amount of reagents. The resulting nanoparticles were characterized by...
118. T. Ogi, K. Aishima, F. A. Permatasari, F. Iskandar, E. Tanabe, K. Okuyama, Kinetics of nitrogen-doped carbon dot formation via hydrothermal synthesis, New Journal of Chemistry, 40, pp 5555-5561 (2016) (IF=3.086)
117. T. Ogi, T. Makino, K. Okuyama, W. Stark, F. Iskandar, Selective Biosorption and Recovery of Tungsten from an Urban Mine and Feasibility Evaluation, Industrial & Engineering Chemistry Research, 55 (10), pp 2903–2910 (2016). (IF=2.587)
116. F.A. Permatasari, A. H. Aimon, F. Iskandar, T. Ogi, K. Okuyama, Role of C-N Configurations in the Photoluminescence of Graphene Quantum Dots Synthesized by a Hydrothermal Route, Scientific Reports 6, 21042 (2016). DOI: https://doi.org/10.1038/srep21042 . PDF (Open Access)
Abstract. Graphene quantum dots (GQDs) containing N atoms were successfully synthesized using a facile, inexpensive and environmentally friendly hydrothermal reaction of urea and citric acid and the effect of the GQDs’ C–N configurations on their photoluminescence (PL) properties were investigated. High-resolution transmission electron microscopy (HR-TEM) images confirmed that the dots were spherical, with an average diameter of 2.17 nm. X-ray photoelectron spectroscopy (XPS) analysis indicated that the C–N configurations of the GQDs substantially affected their PL intensity. Increased PL intensity was obtained...
115. F. Iskandar, E. Dwinanto, M. Abdullah, Khairurrijal and O. Muraza, Viscosity Reduction of Heavy Oil Using Nanocatalyst in Aquathermolysis Reaction, KONA Powder and Particle Journal, 33, 3–16 (2016). Doi: https://doi.org/10.14356/kona.2016005, PDF (Open Access)
114. H. Iwasaki, T. Ogi, F. Iskandar, K. Aishima, K. Okuyama, Microwave synthesis of homogeneous and highly luminescent BCNO nanoparticles for the light emitting polymer materials, Journal of Luminescence, 166, 148–155 (2015) DOI: https://doi.org/10.1016/j.jlumin.2015.05.012, PDF (Open Access)
113. M. M. Munir, S.N. Wahid, F. Iskandar and Khairurrijal, A System for Characterizing Batteries and Their Charging-Discharging Properties, Appl. Mech. Mater, 771, 96-99 (2015) DOI: https://doi.org/10.4028/www.scientific.net/AMM.771.96
112. F. Iskandar, A. Asbahri, E. Dwinanto, M. Abdullah and Khairurrijal, Synthesis of Fe3O4 Nanoparticles Using Co-Precipitation Method and Its Development into Nanofluids as Catalyst in Aquathermolysis Reaction, Advanced Materials Research, Volume 1112, pp 205-208 (2015) DOI: https://doi.org/10.4028/www.scientific.net/AMR.1112.205
111. F. Iskandar and Y.B. Rus, Synthesis of Reduced Graphene Oxide (rGO)/Ni Composite by a Combination of Marcano’s and Microwave Assisted Reduction Methods, Advanced Materials Research, Volume 1112, pp 290-293 (2015) DOI: https://doi.org/10.4028/www.scientific.net/AMR.1112.290
110. G.K. Sukandi, T.D.K. Wungu and F. Iskandar, First Principle Calculation of Li2Fe0.5Cr0.5SiO4 for Li-ion Battery Cathode, Advanced Materials Research, Volume 1112, pp 286-289 (2015) DOI: https://doi.org/10.4028/www.scientific.net/AMR.1112.286
109. P. Noorlaily, M. Ulfa, S.Z. Bisri and F. Iskandar, Absorbance Studies of Perovskite CH3NH3PbI(3-x)Clx as Light Harvester in Solar Cell, Advanced Materials Research, Volume 1112, pp 282-285 (2015) DOI: https://doi.org/10.4028/www.scientific.net/AMR.1112.282