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Efficient photocatalytic hydrogen generation by CeCO3OH/TiO2 composites.

Authors :
Mu, Xiaowan
Xu, Mengjiao
Wang, Yiqiao
Luo, Yongping
Ye, Hao
Xie, Yu
Ling, Yun
Source :
International Journal of Hydrogen Energy. Apr2024, Vol. 63, p1174-1181. 8p.
Publication Year :
2024

Abstract

Due to its low photogenerated carrier separation efficiency and wide band gap, the photocatalytic activity of TiO 2 is not ideal. In this work, CeCO 3 OH/TiO 2 composites were successfully prepared by a simple hydrothermal method. A series of characterisations shows that the CeCO 3 OH/TiO 2 composites improves the photogenerated carrier separation efficiency, narrowes the band gap width and increases the visible light absorption capacity compared with the monomer, enhancing the photocatalytic hydrogen evolution performance. Under visible light irradiation, 20% CeCO 3 OH/TiO 2 exhibites the highest photocatalytic hydrogen production performance of 2386.16 μmol g−1 h−1, which is 18.7 times higher than that of pure TiO 2 and 25.8 times higher than that of pure CeCO 3 OH. It provides ideas for the development of more efficient photocatalytic materials and technologies. • CeCO 3 OH loading on the TiO 2 surface promotes the separation of photogenerated carriers. • 20% CeCO 3 OH/TiO 2 has the best photocatalytic performance, which is 18.7 and 25.8 times higher than TiO 2 and CeCO 3 OH. • A possible mechanism for photocatalytic hydrogen production is proposed. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
03603199
Volume :
63
Database :
Academic Search Index
Journal :
International Journal of Hydrogen Energy
Publication Type :
Academic Journal
Accession number :
176432370
Full Text :
https://doi.org/10.1016/j.ijhydene.2024.03.137