Architecting Inorganic/Organic S-Scheme Heterojunction of Bi4Ti3O12 Coupling with g-C3N4 for Photocatalytic H2O2 Production from Pure Water
Hydrogen peroxide(H2O2)plays a significant role as an industrial chemical and potential energy carrier.However,common H2O2 photosynthesis catalysts face challenges such as limited solar spectrum absorption,severe agglomeration,and difficulty in reuse,hindering their widespread application.In this study,an inorganic/organic heterojunction photocatalyst comprising g-C3N4 nanosheets and Bi4Ti3O12 nanofibers is synthesized using electrospinning assisted self-assembly methods.The Bi4Ti3O12/g-C3N4 heterojunction exhibits significantly enhanced H2O2 yield of 1650 μmol∙g-1∙h-1 and efficient H2O2 photosynthesis directly from pure water.The improved performance is attributed to enhanced visible light absorption,charge separation efficiency,and boosting redox properties of photoinduced carriers in S-scheme heterojunctions.Additionally,the utilization of in situ X-ray photoelectron spectroscopy(ISXPS)enables the investigation of the S-scheme mechanism and dynamics of inorganic/organic Bi4Ti3O12/g-C3N4 heterojunctions.This research presents a novel approach for designing inorganic/organic heterojunction photocatalysts for solar-driven H2O2 production.
国家科技期刊平台
NSTL
万方数据
