The effects of photoirradiation for the production of hydrogen from the decomposition of formic acid (FA) were studied using Ag93Pd7@Pd/TiO2 (anatase (A) or P25 (P)) nanocatalysts. The catalytic activity was enhanced by a factor of 1.5-1.6 under UV and visible (vis) photoirradiation at room temperature for both TiO2 supports. It was explained by the formation of an electron-rich Pd shell because of the migration of photogenerated electrons from the TiO2 surface. The catalytic activity of Ag93Pd7@Pd/TiO2 (A) was 1.7-7.3 times higher than that of Ag93Pd7@Pd/TiO2 (P) without and under photoirradiation at 27-90 °C. The catalytic activity of Ag93Pd7@Pd/TiO2 (A) under photoirradiation at 27 °C with 468 mmol H2 g per catalyst per h, is the best value ever reported out of all of the heterogeneous catalysts using TiO2 (A) as a photocatalyst at room temperature.
All Science Journal Classification (ASJC) codes
- 化学 (全般)