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NiS2 Co-catalyst decoration on CdLa2S4 nanocrystals for efficient photocatalytic hydrogen generation under visible light irradiation |
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| Authors: | Yu-Peng Yuan Shao-Wen Cao Li-Sha Yin Lin Xu Can Xue |
| Affiliation: | 1. Solar Fuels Lab, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore;2. Laboratory of Advanced Porous Materials, School of Chemistry and Chemical Engineering, An-hui University, Hefei 230039, PR China |
| Abstract: | NiS2 nanoparticles as noble metal-free co-catalysts were deposited onto the CdLa2S4 nanocrystals through a hydrothermal process. The loading of NiS2 co-catalyst resulted in remarkable enhancement for H2 production over the CdLa2S4 photocatalyst under visible light irradiation. The optimal hybrid photocatalyst with 2 wt% NiS2 loading exhibited a H2 production rate of 2.5 mmol h−1 g−1, which was more than 3 times higher than that of the pristine CdLa2S4 photocatalyst. The promoted photocatalytic H2 production by NiS2-loading is attributed to the enhanced separation of photogenerated electrons and holes as well as the activation effect of NiS2 for H2 evolution. |
| Keywords: | Photocatalysis Water splitting Hydrogen evolution Solar energy conversion Heterojunction |
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