Ca1-xSrxGa2O4 (0.2≤x≤0.7): A novel photocatalyst with special stability for H2 production

作者：Yang, Jia^*; Chen, Zuli; Liu, Miaomiao; Chen, Min; Sun, Xiaorui^*; Huang, Huisheng

来源：Optical Materials, 2022, 133: 113079.

DOI：10.1016/j.optmat.2022.113079

• Photocatalysis
• Semiconductors
• Hydrogen production
• Photo-corrosion
• X-ray techniques

Herein, we reported a series of semiconductors as novel photocatalysts under ultraviolet light. The Ca1-xSrxGa2O4 (0.2 <= x <= 0.7) photocatalysts have a monotonous enhancement of the H-2 evolution rate against the increasing x value. With a 3 wt% Ru-cocatalyst, the photocatalytic performance of Ca0 center dot 3Sr0.7Ga2O4 was enhanced 1.8-folds by comparing with the intrinsic one. Although the sample has a photo-corrosion in 10% triethanolamine (TEOA) solution during the hydrogen production reaction, the hydrogen evolution amounts maintain stably for every 5 h in the total 100 h of the cyclic experiment. These semiconductors before and after photocatalysis were analyzed by X-ray techniques.

• 单位
  桂林理工大学