Synergistic advantages of In-MOF/Bi2MoO6 composites in photocatalytic CO2 reduction: enhanced light absorption, charge separation and reactivity†

Abstract

The development of highly efficient photocatalysts for the reduction of CO₂ holds paramount importance in addressing the pressing global energy and environmental challenges. In this meticulously conducted study, we successfully fabricated a novel composite consisting of In-MOF and Bi₂MoO₆, and comprehensively investigated its photocatalytic performance in the context of CO₂ reduction. The formation of a heterojunction between the In-MOF and Bi₂MoO₆ facilitated efficient charge separation and transfer processes. The internal electric field present at the interface of the heterojunction drove the photogenerated electrons and holes to migrate in opposite directions, effectively mitigating their recombination rate. Consequently, a greater abundance of reactive species was available to participate in the CO₂ reduction reaction. The combined effects of enhanced light absorption and efficient charge separation culminated in a higher yield of CO and CH₄ compared to the individual components. This study provides some references and insights into the design and manufacture of high-performance photocatalysts.