Journal
CHEMICAL ENGINEERING JOURNAL
Volume 283, Issue -, Pages 351-357Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2015.07.079
Keywords
Photocatalysis; Hybrid materials; Hydrogen; Nanoparticles
Categories
Funding
- National Natural Science Foundation of China [21471160]
- China Postdoctoral Science Foundation [2013M541963]
- Fundamental Research Funds for the Central Universities
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To seek robust active photocatalysts for sunlight-driven water splitting, a variety of semiconductor materials have been developed to achieve high photocatalytic efficiency. In this work, the CdS nanoplates with rough surface have been synthesized through a two-step ionic-exchange route. The as-synthesized sample was modified by Pt in an in situ photo-deposition cell to fabricate hybrid Pt/CdS nanophotocatalyst. The rate of average solar hydrogen evolution over the Pt/CdS nanoplates reached 3.75 mmol h(-1) g(-1), which is significantly higher than that of bare CdS and NiS/CdS counterparts. Furthermore, the Pt/CdS exhibited very high stability in continuous solar H-2 evolution at a relatively stable state even over a 16-day reaction period, implying the as-fabricated hybrid nanophotocatalyst is approaching the practical requirements. The significantly enhanced photocatalytic efficiency was ascribed to the merits of rough plate-like nanostructures and the assistance of Pt co-catalyst, which can promote the light-absorption capability and photo-carrier separation as well as provide reactive sites. The present work opens an avenue to construct efficient and stable solar-driven catalysts for new energy creation. (C) 2015 Elsevier B.V. All rights reserved.
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