Enhanced Photocatalytic Hydrogen Production Activity Driven by TiO 2 /(MoP/CdS): Insights from Powder Particles to Thin Films

• Published in: Langmuir 2024-10, Vol.40 (40), p.21161-21170
• Main Authors: Wang, Jiajia, Tian, Jinfeng, Han, Peng, Song, Lingxiao, Wang, Wei, Lin, Keying, Feng, Dong, Ma, Baojun
• Format: Article
• Language: English
• ISSN: 0743-7463; 1520-5827
• DOI: 10.1021/acs.langmuir.4c02635

Transitioning from powder photocatalysts to thin film photocatalysts is one of the necessary steps toward industrializing photocatalytic hydrogen production. Herein, we reported the integration of non-noble metal cocatalyst MoP decorated with TiO and CdS, forming TiO /(MoP/CdS) for ultraviolet-visible light utilization. The designed powder TiO /(MoP/CdS) composites achieved a superior hydrogen production rate of 42.2 mmol g h , which is 30.1 times that of TiO /CdS, performing the highest activity among the TiO -CdS-based composite photocatalysts. Moreover, we fabricated a thin film from TiO /(MoP/CdS) powder, which exhibited comparable photocatalytic activity for hydrogen production, achieving 35.5 mmol g h and maintaining long-term stability for 150 h. The outstanding performance was attributed to the ability of the TiO /(MoP/CdS) composite photocatalysts to absorb both visible and ultraviolet light. Additionally, the heterojunction formed between TiO and CdS also played a significant role in the overall photocatalyst activity. This cost-effective catalyst holds promise for future large-scale industrial applications.