Publication date: 15th December 2025
Keywords: Photocatalysis, Homogeneous Catalysis, Heterogeneous Catalysis, Single Atom Catalyst
Background and motivation. Among various solar energy conversion techniques, photocatalysis is deemed as a promising, environmentally benign, and cost-effective strategy to generate both fuels and high-value chemicals. While in this domain homogeneous photocatalysts prevail due to higher selectivity but the reutilisation of the catalyst is next to impossible. On the other hand, heterogeneous photocatalysts are recyclable but not highly selective. Therefore, to make a bridge between these two, a new strategy has been developed by synthesizing single metal atom photocatalysts that are selective as well as recyclable. In general, single-atom photocatalysts (SACs) have shown their compelling potential and arguably become the most active research direction in photocatalysis due to their fascinating strengths in enhancing light-harvesting, charge transfer dynamics, and surface reactions of a photocatalytic system.
Materials and methods. Based on the advantages of photocatalysis, we have synthesized several homogeneous catalysts as well as heterogeneous catalysts such as COFs by following routine techniques. However, for the SACs, we have designed our new synthetic technique.
Results and discussion. Based on this, recently we have developed several photocatalytic strategies for the synthesis of fuels as well as high valued chemicals via C-H bond functionalization, CO2 utilisation, water oxidation, plastic valorisation where the catalysts exhibited excellent selectivity as well as recyclability.
