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Updated: Dec 19, 2025
Photochemical Oxidative Growth of Iridium Oxide Nanoparticles on CdSe@CdS Nanorods
Published on: February 11, 2016
Self-reduction derived nickel nanoparticles in CdS/Ni(OH)2 heterostructure for enhanced photocatalytic hydrogen
Xiaoning Wang1, Xiaofei Zhang2, Wenqiang Gao2
1School of Transportation and Civil Engineering, Shandong Jiaotong University, Jinan 250357, China.
Abstract:
Nickel-based materials have been used in electrochemical water splitting and as a co-catalyst to effectively improve photocatalytic activity. However, the mechanism of the catalytic effect on hydrogen evolution of NiO and Ni(OH)2 needs further investigation because of the high risk in self-reduction with photo-induced electrons. In this work, the self-reduction of Ni2+ was confirmed during the photocatalytic H2 evolution in the CdS/Ni(OH)2 hybrid materials. Meanwhile, in situ formed metallic Ni plays an important role in the increase in the catalytic activity. Fortunately, only a few photo-induced electrons participate in the reduction of Ni2+ in CdS/Ni(OH)2 hybrid materials. The existence of metallic Ni would prevent more Ni2+ from self-reduction. The synergistic effect of Ni(OH)2 and metallic Ni contributes to the improvement of H2 evolution of CdS nanorods.
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