Synergetic effects of nitrogen doping and Au loading on enhancing the visible-light photocatalytic activity of nano-TiO2
Synergetic effects of nitrogen doping and Au loading on enhancing the visible-light photocatalytic activity of nano-TiO2
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氮掺杂和Au负载协同增强纳米TiO2可见光光催化活性
DOI：
10.1016/j.catcom.2008.12.029
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发表时间：
2009-02-15
影响因子：
3.7
通讯作者：
Jiang, Haibo
中科院分区：
文献类型：
--
作者：
Tian, Baozhu;Li, Chunzhong;Jiang, Haibo
采用简单的湿化学法制备了氮掺杂金负载纳米TiO 2（Au/N-TiO 2）。采用XRD、TEM、XPS、UV-vis漫反射光谱和光致发光光谱等手段对样品进行了表征。结果表明，Au以金属态Au的形式负载在TiO 2表面，氮以置换态氮和间隙态氮的形式引入到TiO 2基体中。Au/N-TiO 2比单一N掺杂或Au负载的TiO 2具有更高的可见光催化活性。氮掺杂和Au负载对提高TiO 2可见光催化活性的影响可以用协同效应来解释。(C)2008 Elsevier B. V.保留所有权利。
Nitrogen-doped together with gold-loaded TiO2 (Au/N-TiO2) nanoparticles were prepared by a simple wet-chemical method. The samples were characterized by XRD, TEM, XPS, UV-vis diffuse reflectance spectroscopy, and photoluminescence (PL) spectroscopy. It reveals that Au was loaded on the surface of TiO2 in the form of metallic Au, and nitrogen is introduced into TiO2 matrix in the form of substitutional nitrogen and interstitial nitrogen. Au/N-TiO2 exhibits much higher visible-light photocatalytic activity when compared with single N-doped or Au-loaded TiO2. A synergetic effect was proposed to explain the effects of nitrogen doping and Au loading on enhancing the visible-light photocatalytic activity of TiO2. (C) 2008 Elsevier B.V. All rights reserved.