The Au/Ag alloy nanoshuttle-TiO2 nanostructure with enhanced H2 production under visible light and inactivation analysis

被引：0
|
作者：
Lei, Weisheng [1 ]
Wang, Fengzhi [1 ]
Pan, Xinhua [1 ]
Lu, Bin [1 ]
Ye, Zhizhen [1 ]
机构：
[1] State Key Laboratory of Silicon Materials, Cyrus Tang Center for Sensor Materials and Applications, School of Materials Science and Engineering, Zhejiang University, 310027, China
来源：
Nanotechnology | 2020年 / 31卷 / 09期
关键词：
Titanium dioxide;
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学科分类号：
摘要：
Plasmonic noble metal has been applied in photocatalytic materials, and TiO2 with plasmonic noble metal has been studied for a long time. In this work, we have fabricated incomplete covered Au/Ag alloy nanoshuttle-TiO2 nanomaterials with 268.7 μmol g-1h-1 H2-evolution in a simple solution method. The considerable photocatalytic performance is mainly due to the enhanced surface plasmon resonance effect of Au/Ag alloy nanoshuttles. It has been found that TiO2 clusters attached to the Au/Ag nanoshuttles surface migrate under electrons irradiation and cover the exposed Au/Ag NS surface to achieve thermodynamic stability, which results in instability of photocatalytic performance. The mechanism has been discussed in detail. © 2019 IOP Publishing Ltd.
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