Proceedings of nanoGe Fall Meeting 2018 (NFM18)
Publication date: 6th July 2018
Nanostructured materials offer new, cost-efficient and sustainable opportunities for converting sunlight into electricity and fuels. The complexity of photoelectrochemical water splitting needs thorough understanding of the system and new ideas to overcome the limiting factors in the process. Our work is focused on investigating new photocathode materials for photoelectrochemical water splitting and developing a system that enables efficient photoelectrochemical solar fuel production.
One approach to efficiently reduce protons to H2 is to use dye-sensitised photocathodes.1 Previously we have shown that novel covalently linked dye-catalyst complexes adsorbed onto NiO nanoparticles, immobilised as thin films, absorbed visible light and efficiently catalysed the H2 evolution half reaction.
Our recent work is based on the development of a new hybrid photocathode system based on a wide band gap p-type semiconductor CuCrO2 functionalised with synthetic dyes and dye-catalyst assemblies yielding high photocurrents (Figure 1.) and efficient H2 evolution from water with high Faradaic efficiency. H2 evolution on these photocathodes has been studied under different applied potentials, in varying pH conditions and electrolytes. The electrochemical and photoelectrochemical properties of these hybrid photocathodes are studied under simulated sunlight using linear sweep voltammetry, chronoamperometry, electrochemical impedance spectroscopy and incident photon-to-current efficiency measurements. The surfaces of the photocathodes are characterised using X-ray Photoelectron Spectroscopy.
We thank North East Centre for Energy Materials (NECEM) for funding our research and providing travel bursary for this conference.
nanoGe is a prestigious brand of successful science conferences that are developed along the year in different areas of the world since 2009. Our worldwide conferences cover cutting-edge materials topics like perovskite solar cells, photovoltaics, optoelectronics, solar fuel conversion, surface science, catalysis and two-dimensional materials, among many others.
Previously nanoGe Spring Meeting (NSM) and nanoGe Fall Meeting (NFM), MATSUS is a multiple symposia conference focused on a broad set of topics of advanced materials preparation, their fundamental properties, and their applications, in fields such as renewable energy, photovoltaics, lighting, semiconductor quantum dots, 2-D materials synthesis, charge carriers dynamics, microscopy and spectroscopy semiconductors fundamentals, etc.
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