Au Nanoparticles Loaded on Hollow TiO2 Microspheres with (001) Exposed Facets: a Strategy for Promoting Photocatalytic Performance

Au Nanoparticles Loaded on Hollow TiO2 Microspheres with (001) Exposed Facets: a Strategy for Promoting Photocatalytic Performance
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具有 (001) 暴露面的空心 TiO2 微球上负载的金纳米颗粒:提高光催化性能的策略

DOI:
10.1007/s40242-018-8047-8
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发表时间:
2018-07
影响因子:
3.1
通讯作者:
Luo Liqiang
Luo Liqiang
中科院分区:
化学3区
文献类型:
--
作者:
Wang Shumin;Yan Xiaoxia;Zhu Yan;Deng Domgmei;He Haibo;Luo Liqiang

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采用无模板水热结合化学还原的方法合成了带有暴露(001)面负载TiO2空心微球(Au- htfs)的Au纳米颗粒。Au- htfs在催化有机污染物体系中的氧化反应中表现出优异的光催化活性,这是由于活性(001)面与基于局域表面等离子体共振效应的可见区广泛吸收的Au纳米粒子的协同作用所致。这种独特的协同效应可以大大提高光催化性能,这是由于可见光吸收和电子-空穴对复合的改善。结果表明,在不同Au负载率的Au- htfs中,Au负载率为2%(质量分数)的Au- htfs具有较好的光催化活性。
Au nanoparticles loaded TiO2 hollow microspheres with exposed (001) facets(Au-HTFs) were synthesized through template-free hydrothermal process combined with a chemical reduction role. Au-HTFs displayed excellent photocatalytic activity in catalyzing oxidization reaction in organic pollutant system, which originates from the synergistic effect of the reactive (001) facets and Au nanoparticles with a wide range of absorption in visible region based on localized surface plasmon resonance effect. The unique synergistic effect could largely increase the photocatalytic performance resulting from the improvements of both the visible light aborption and the recombination of electron-hole pairs. Our findings revealed that among Au-HTFs with different Au loading percentages, Au-HTFs with 2%(mass fraction) Au loading possessed the superior photocatalytic activity.
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