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首页> 外文期刊>Applied Surface Science >Aerosol-assisted flow synthesis of W_xTi_(1-x)O_2 solid solution spheres with enhanced photocatalytic activity
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Aerosol-assisted flow synthesis of W_xTi_(1-x)O_2 solid solution spheres with enhanced photocatalytic activity

机译：具有增强的光催化活性的W_xTi_（1-x）O_2固溶体球的气溶胶辅助流动合成

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摘要

In this paper, W_xTi_(1-x)O_2 solid solutions (x- 0.000,0.005,0.010,0.015, and 0.020) microspheres were synthesized with an aerosol-assisted flow synthesis method. The resulting samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), nitrogen sorption, UV-vis diffuse reflectance spectrum (DRS) and X-ray photoelectron spectroscopy (XPS). The photocatalytic activities of the as-prepared catalysts were measured by the degradation of rhodamine B (RhB) under visible light irradiation (λ≥420nm). All the solid solutions exhibited higher photocatalytic activities than pure TiO_2 and the W_(0.015)Ti_(0.985)O_2 solid solution possessed the highest photocatalytic activity. The degradation constant of RhB on W_(0.015)Ti_(0.985)O_2 solid solution catalyst was about 15 times of that of the pure TiO_2 and 25 times of that of Degussa P25, respectively. This study provides an effective method to prepare visible light photocatalysts on a large scale.
机译：在本文中，采用气溶胶辅助流动合成法合成了W_xTi_（1-x）O_2固溶体（x- 0.000,0.005,0.010,0.015和0.020）微球。所得样品通过X射线衍射（XRD），扫描电子显微镜（SEM），透射电子显微镜（TEM），氮吸附，紫外可见漫反射光谱（DRS）和X射线光电子能谱（XPS）进行表征。通过在可见光（λ≥420nm）下若丹明B（RhB）的降解来测量所制备催化剂的光催化活性。所有固溶体均表现出比纯TiO_2更高的光催化活性，W_（0.015）Ti_（0.985）O_2固溶体具有最高的光催化活性。 Rh_在W_（0.015）Ti_（0.985）O_2固溶体催化剂上的降解常数分别约为纯TiO_2的15倍和Degussa P25的25倍。该研究提供了一种大规模制备可见光光催化剂的有效方法。

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  • 来源
    《Applied Surface Science》 |2011年第10期|p.4725-4730|共6页
  • 作者

    Zhihui Ai; Xiao Song; Yu Huang; Lizhi Zhang; Shuncheng Lee;

  • 作者单位

    Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, People's Republic of China Department of Civil and Structural Engineering, Research Center for Environmental Technology and Management, The Hong Kong Polytechnic University, Hong Kong, People's Republic of China;

    Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, People's Republic of China;

    Department of Civil and Structural Engineering, Research Center for Environmental Technology and Management, The Hong Kong Polytechnic University, Hong Kong, People's Republic of China;

    Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, People's Republic of China Department of Civil and Structural Engineering, Research Center for Environmental Technology and Management, The Hong Kong Polytechnic University, Hong Kong, People's Republic of China;

    Department of Civil and Structural Engineering, Research Center for Environmental Technology and Management, The Hong Kong Polytechnic University, Hong Kong, People's Republic of China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Photocatalysis; Solid solution; Tungsten; TiO_2;

    机译：光催化;实在的方法;钨;TiO_2;

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