Publications & Patent

1. Kumar S, Tirumala, R.A., Gyawali S, Le T, Tan S, Goswami D.Y., Wang B, Bristow AD, Andiappan M. "Plasmonic versus Dielectric Mie Resonance Mediated Photocatalytic Reverse Water-Gas Shift Reaction on Copper-Based Nanocubes". ACS Nano. 2025, https://doi.org/10.1021/acsnano.5c07063 

2. Kumar S, Goswami D.Y., Andiappan M. "Photocatalytic C–C Coupling Reactions of Terminal Alkynes using Cupric Oxide-Based Mie Resonator Photocatalysts". (Patent application # 63/782,173 filed on April 2nd, 2025). 

3. Tirumala, R.A., Gyawali S, Le T, Kumar S, Le T, Tan S, Wang B, Bristow AD, Andiappan M. "Visible Light-Driven Photocatalytic Carbon-Carbon Coupling Reaction under Atmospheric Temperature and Pressure Conditions using Hybrid Cu2O-Pd Nanostructures". ACS Applied Materials & Interfaces. 2025, https://pubs.acs.org/doi/10.1021/acsami.5c01996

1. Kumar S, Tirumala, R.A., Andiappan M. “Mechanistic Investigations of Catalytic Phase Transformations in Copper-Based Nanostructures during Reverse Water Gas Shift Reactions”, Oral Presentation: AIChE Annual Meeting, San Diego, CA, October 2024.

2. Tirumala, R.A., Kumar S, Andiappan M. “Ambient Photocatalysis: CC Coupling of Terminal Alkynes with Hybrid Cu2O-Pd Nanostructures”, Poster Presentation: AIChE Annual Meeting, San Diego, CA, October 2024. 

3. Kumar S, Andiappan M. “Photocatalytic Reverse Water-Gas Shift Reaction Using Copper-Based Nanostructures” Oral Presentation: 29th North American Catalysis Society Meeting, Atlanta, GA, June 2025. 

B.Tech. 2019, Chemical Engineering
University of Petroleum and Energy Studies, Dehradun, India

M.Tech. 2023, Chemical Engineering
Indian Institute of Technology (BHU), Varanasi, India

Research Assistant, Chemical Engineering, 2023

Indian Institute of Technology, Roorkee, India

Graduate Research Assistant, Chemical Engineering, 2024 

Oklahoma State University, Stillwater, OK, USA.

IIT (BHU)’s Gold Medal for Distinguished Performance – 2023

Best Poster Presentation Award for Intro to Research Poster Presentation at Oklahoma State University – 2024.