Abstract
The hydrogen (H2) production from water systems by photocatalysis has become a significant alternate fuel. Here, we designed BaSnO3 nanoparticles (NPs) using a hydrothermal process, which was subsequently modified with small quantities (1–4% wt) of Ag2O. The produced photocatalysts showed improvement in structural and optical properties after incorporating Ag2O. The 3 wt% Ag2O/BaSnO3 exhibited more light harvesting while decreasing the bandgap from 2.9 eV in pristine BaSnO3 to 1.98 eV. The photoluminescence results indicate that adjusting the Ag2O content results in the lowest recombination of photoinduced charges. Furthermore, the generated heterojunctions were evaluated for H2 production from 10 % aqueous glycerol solution in the presence of Pt cocatalyst. After 9 h of visible illumination, the modified Ag2O/BaSnO3 showed an H2 evolution rate of 3225 μmol g−1 h−1, which is 8.6 fold greater than pure BaSnO3, with exceptional durability.
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