Nanosized BaSnO3 as Electron Transport Promoter Coupled with g-C3N4 toward Enhanced Photocatalytic H2 Production

A series of type-II BaSnO3/g-C3N4 heterojunction composites are prepared by anchoring BaSnO3 on g-C3N4 via a facile solvothermal method. BaSnO3 is applied as an electron transport promoter in the field of photocatalytic H-2 production under visible light for the first time. BaSnO3 shows excellent performance in collecting and transferring photogenerated electrons from g-C3N4 to reactive sites, thus effectively inhibiting the recombination of photogenerated electron-holes. Consequently, the photocatalytic H-2-production activity of BaSnO3/g-C3N4 composite is enhanced up to 3.2 times compared to that of pristine g-C3N4. This work provides a meaningful reference for the application of electron transport materials in the field of photocatalysis.

Automated summary

A series of type-II BaSnO3/g-C3N4 heterojunction composites have been prepared using a facile solvothermal method, with BaSnO3 acting as an electron transport promoter for photocatalytic H-2 production under visible light for the first time. BaSnO3 demonstrates excellent performance in collecting and transferring photogenerated electrons, leading to effective inhibition of electron-hole recombination and significantly enhancing the photocatalytic H-2 production activity of the composite compared to pristine g-C3N4. This study provides valuable insights for utilizing electron transport materials in photocatalysis.