Design and Development of PEDOT: PSS-Capped Porous TiO₂-Double Perovskite Hybrids for Enhanced Electrochemical and Photoelectrochemical Water Splitting
Sri Sivasubramaniya Nadar College Of Engineering, Tamil Nadu
senthilpandianm@ssn.edu.in
CO-Principal Investigator
Nil
Project Overview
The proposed research aims to develop a cutting-edge electrocatalyst designed for efficient hydrogen production through water splitting, combining electrochemical and photoelectrochemical approaches. The foundation of this work lies in synthesizing PEDOT: PSS-capped double perovskite structures supported on porous TiO₂ scaffolds. This innovative approach integrates advanced material design, structural optimization, and systematic performance evaluation to overcome the existing challenges in water-splitting technologies. The project begins with the fabrication of porous TiO₂ scaffolds (Sample A) using PMMA templates, where the polymer templates will be calcined to produce a high-surface-area inverse opal (IOP)-like structure. Concurrently, double perovskite materials (Sample B) with the general formula A₂B₂X₆ (A = Sr; B = transition metals; X = O) will be synthesized, leveraging the unique electronic properties of these structures to enhance catalytic activity. The hybridization of Samples A and B will employ a methodology adapted from existing protocols to ensure robust integration of the materials (templated assisted method). The final hybridized structure will be capped with a thin layer of PEDOT:PSS, a conductive polymer known for its excellent charge transport properties and chemical stability. The synthesized catalysts will undergo comprehensive evaluations for their performance in both electrochemical water splitting and photoelectrochemical water splitting. The investigations will compare the efficacy of the catalysts with and without PEDOT:PSS capping utilizing molecular imprinting technology to ensure precise and stable polymer integration on the catalyst surface, providing insights into the role of the polymer layer in enhancing catalytic activity and stability. This project addresses critical bottlenecks in sustainable hydrogen production, including improving reaction kinetics, minimizing charge recombination, and enhancing structural stability under operational conditions. The findings are expected to significantly advance the field of water-splitting catalysis, offering a pathway toward scalable and efficient hydrogen generation technologies. The outcomes of this project will be disseminated through high-impact journal publications and patents, fostering innovation in renewable energy and contributing to India’s goals of energy security and carbon neutrality.