The
CO2 photoreduction process is becoming a promising
strategy to solve the energy shortage problem and global warming in
recent years. How to promote the separation of photoinduced carriers
has attracted attention for the improvement of photocatalytic CO2 reduction. In the present work, an S-scheme heterojunction
of Bismuthene/CsPbBr3 quantum dots (Bismuthene/CsPbBr3 QDs) is constructed as the photocatalyst for CO2 conversion. As a result, Bismuthene/CsPbBr3 QDs exhibit
an optimal CH4 evolution rate of 43.1 μmol h–1 g–1 with 84.53% selectivity over
CH4 under ultraviolet–vis light (UV–vis)
irradiation. Construction of the S-scheme heterojunction with a narrow
band gap semiconductor is the main factor for improving the photocatalytic
performance, as the S-scheme heterojunction can suppress the recombination
of photoinduced carriers and retain redox ability. The narrow band
gap semiconductor Bismuthene can enhance light absorption abilities.
This work probably provides some insights for the designing of heterojunction
photocatalysts and the improvement of photocatalytic performance.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.