Proceedings of Catalyst Design Strategies for Photo- and Electrochemical Fuel Synthesis (ECAT25)
Publication date: 19th December 2024
Electrocatalysis is currently at the heart of the transition to sustainable management of energy and chemical production schemes. Processes such as H2 production, CO2 conversions to carbon fuels, or O2 selective reduction to H2O2 or H2O or water through electrocatalytic approaches are very popular on account of the compliance with new guidelines on sustainable chemistry. Development of high-performance catalysts for the specific reaction is one of the key steps for a realistic implementation of such schemes. Typically, useful levels of activity and selectivity are achieved by including metals in the formulation of the catalytic material. However, a sensible use of metals is one of the new recommendations of European Union on account of recent raw critical materials analysis.[1] Carbon nanostructures (CNSs) can serve as useful conductive supports to boost the activity of metal phases in electrocatalytic reactions. This is possible because of the synergistic electronic interfacial effects between the carbon and the inorganic phases. In particular, the electron collection ability of CNSs can be exploited to increase the electron density of the metal surface states, improving charge transfer kinetics.[2] The promoting effect of CNSs can be so large to allow of reducing the metal loading to single metal atoms, or even to perform metal-free electrocatalysis using the CNS directly as catalyst.[3] By this means, metal loadings can be decreased without compromising electrocatalytic performance. In this presentation, a few examples will be discussed to illustrates the principle behind the strategy of integrating CNSs in electrocatalyst formuation, focusing on O2 and CO2 reduction and H2 evolution.
European Commission (H2020 – RIA-CE-NMBP-25 Program, Grant No. 862030, project DECADE)
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