Proceedings of MATSUS Spring 2024 Conference (MATSUS24)
DOI: https://doi.org/10.29363/nanoge.matsus.2024.047
Publication date: 18th December 2023
Photocatalytic conversion of water and carbon dioxide using solar energy offers a clean solution to the world energy requirements of a sustainable future. Achieving its full potential depends on developing inexpensive photocatalysts that can efficiently absorb solar light and drive separated photoinduced charges to react with water and carbon dioxide. In this talk, I will present recent developments we have achieved in the preparation of inexpensive photocatalyst composites with enhanced charge transfer separation and photocatalytic performance. For example, I will present fast and convenient mechanochemical syntheses of halide perovskite nanocrystals of CsPbBr3 and Cs2AgBiBr6, together with copper-loaded reduced graphene oxide. I will also present our developed antisolvent crystallizations to prepare composites such as Cs2AgBiBr3/bismuthene and Cs3Bi2Br9/g-C3N4, all of which are active in the reduction of CO2 to CO and CH4. Extensive characterizations of these materials have enabled us to gain insights into their physical and charge-transfer properties and relate them to their photocatalytic activity. These characterizations underline the importance of surface area, reactant adsorption, and charge separation to achieve best performances. Some of these composites such as Cs3Bi2Br9/g-C3N4 separate charges via a direct Z-scheme heterojunction, boosting charge separation and photocatalytic conversions. Altogether, these results will contribute to the rational design and application of halide perovskites for solar fuels and chemicals.
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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.
International Conference on Hybrid and Organic Photovoltaics
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