Journal
CHEMICAL ENGINEERING JOURNAL
Volume 375, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2019.121934
Keywords
Photocatalysis; H-2 evolution; TiO2; Amorphous MoSx; Nanoclusters
Categories
Funding
- National Natural Science Foundation of China [51872221, 21771142]
- Fundamental Research Funds for the Central Universities [WUT 2019IB002]
- 111 Project
Ask authors/readers for more resources
Amorphous MoSx has been demonstrated to be a high H-2-production cocatalyst towards various photocatalytic materials, and the facile synthetic route of MoSx cocatalyst with a small size is highly required to further improve its H-2-evolution performance. In this study, amorphous MoSx nanoclusters (a-MoSx) with a very small size of 0.4-0.7 nm have been successfully loaded on TiO2 surface by an ethyl acetate-induced hydrolysis route. Herein, the MoS42- ions can be gradually and homogeneously transformed into amorphous MoSx nanoclusters on the TiO2 surface to prepare the highly efficient a-MoSx/TiO2 photocatalysts via the gradual hydrolysis of ethyl acetate. The photocatalytic hydrogen-production experimental results reveal that the resulting a-MoSx/TiO2 (5 wt%) photocatalyst achieves the maximum H-2-evolution rate (1106 mu mol h(-1) g(-1)), which is apparently higher than that of crystalline MoSx-modified TiO2 (94 mu mol h(-1) g(-1)) by a factor of 11.71 times. The markedly enhanced H-2-evolution rate of the a-MoSx/TiO2 photocatalyst can be attributed to the formation of more unsaturated S atoms in the amorphous MoSx nanoclusters, which can work as effective active sites to boost the interfacial H-2-production rate. The present facile method may provide rational ideas for preparing other nanocluster materials for energy and environmental applications.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available