Project Title: Biosynthesis and Simulation of Silver Nanoparticles for Biosensing and Therapy of Cancer Cells
Project Objective: This research aimed to develop a sustainable approach for synthesizing silver nanoparticles (AgNPs) from water hyacinth, a widely available aquatic plant, and investigate their potential applications in biosensing and cancer therapy. The study integrated experimental characterization with computational simulations to gain a comprehensive understanding of the nanoparticles' properties and their biomedical potential.
Methodology:
Biosynthesis of Silver Nanoparticles: Water hyacinth extract was used as a natural reducing and stabilizing agent to synthesize silver nanoparticles through a green chemistry approach. This eco-friendly process eliminated the need for toxic chemical reducers, aligning with sustainable research practices.
Characterization Techniques:
Optical Characterization: UV-Vis spectroscopy to assess surface plasmon resonance and determine nanoparticle formation.
Structural Characterization: X-ray diffraction (XRD) and Fourier-transform infrared (FTIR) spectroscopy to confirm nanoparticle crystallinity and functional groups.
Thermal Characterization: Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) to examine thermal stability and decomposition behavior.
Computational Simulations and Data Analysis:
Python: For data analysis, signal processing, and generating visualizations to interpret experimental results.
CASTEP: To perform first-principles calculations and model the electronic and structural properties of AgNPs.
Mathematica & Microcal Origin: For fitting experimental data, modeling biosensing interactions, and conducting statistical analyses.
R: For additional data visualization and statistical analysis to support hypothesis testing.
Results and Insights:
Biosensing Potential: AgNPs exhibited strong surface plasmon resonance, making them highly sensitive to changes in the surrounding environment. Simulations and experimental data revealed their capacity to detect biomolecules at low concentrations, confirming their suitability for biosensing applications.
Cancer Therapy Evaluation: The cytotoxic effects of AgNPs on cancer cells were investigated through in vitro studies. Data analysis using Python and Microcal Origin showed dose-dependent interactions, where nanoparticles induced oxidative stress and apoptosis in cancer cells. Thermal and structural stability analyses indicated that the nanoparticles retained their integrity under physiological conditions, essential for therapeutic use.
Scientific Impact: The combination of experimental and computational approaches led to novel insights into the structure-property relationships of biosynthesized AgNPs, contributing to two peer-reviewed publications. The research demonstrated the feasibility of harnessing plant-based synthesis for developing multifunctional nanomaterials with real-world biomedical applications.
Conclusion: This project successfully synthesized and characterized silver nanoparticles from water hyacinth, highlighting their dual potential for biosensing and cancer therapy. The integration of advanced computational techniques provided deeper insight into the nanoparticles' behavior, enhancing the understanding necessary for translating these materials into clinical and diagnostic settings.