无机材料学报 ›› 2011, Vol. 26 ›› Issue (5): 513-516.DOI: 10.3724/SP.J.1077.2011.00513

• 研究论文 • 上一篇    下一篇

聚合络合法制备可见光响应光催化剂K4Ce2Nb10O30及其光解水活性

田蒙奎1, 上官文峰2   

  1. (1. 贵州大学 化学与化工学院, 贵阳 550003; 2. 上海交通大学 机械与动力工程学院, 燃烧与环境技术研究中心, 上海 200240)
  • 收稿日期:2010-07-21 修回日期:2010-10-13 出版日期:2011-05-20 网络出版日期:2011-06-07
  • 作者简介:田蒙奎(1978-), 男, 博士, 副教授. E-mail: tianmk@hotmail.com
  • 基金资助:

    国家重点基础研究发展计划(973计划) (2009CB220004); 贵州省社发攻关项目(SZ[2008]3008); 贵阳市科技攻关项目([2008] 014); 贵州大学人才引进项目(017[2007])

Preparation of Visible Light-driven Photocatalyst K4Ce2Nb10O30 by Polymerizable Complex Process and Its Photocatalytical Activity for Water Decomposition

TIAN Meng-Kui1, SHANGGUAN Wen-Feng2   

  1. (1. School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550003, China; 2. Research Centre for Combustion and Environmental Technology, School of Power and Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China)
  • Received:2010-07-21 Revised:2010-10-13 Published:2011-05-20 Online:2011-06-07
  • Supported by:

    National Key Basic Research and Development Program (2009CB220004); Key Project for Society Development, Guizhou Province (SZ[2008]3008); Key Project of Science and Technology, Guiyang City([2008] 014); Program for Talent Induced, Guizhou Province(017[2007])

摘要: 以可溶性的草酸铌为前体, 通过聚合络合法合成了可见光响应光催化剂K4Ce2Nb10O30. XRD、SEM、BET 以及UV-Vis等表征结果表明: 通过该法制备的光催化剂相对于传统高温固相反应法制备的样品具有更小(20~50nm)且分布均匀的纳米颗粒和较高的比表面积. 在可见光下(λ > 400 nm)分解水的活性测试中, 聚合络合法获得K4Ce2Nb10O30比高温固相样品具有更高的光催化分解水活性, 并且在紫外光段下(λ > 300 nm)具备了完全分解纯水的光催化活性.  

关键词: K4Ce2Nb10O30, 聚合络合法, 可见光响应, 光解水

Abstract: Visible light-driven photocatalyst K4Ce2Nb10O30 was prepared by polymerizable complex (PC) process  using dissolvable niobium oxalate as precursor. Characterizations of XRD, BET, SEM and UV-Vis showed that the sample prepared from PC process presented smaller particles (20-50 nm) and higher specific surface areas than the sample from conventional high temperature solid state reaction (SSR) method. As for their photocatalytical activities for water decomposition under visible light irradiation (λ > 400 nm), the sample prepared by PC method showed higher H2 evolution activities than that of sample prepared by SSR as a result of the higher surface areas and finer crystal particles of sample prepared by PC. Moreover, the sample prepared by PC methods realized the overall pure water splitting under λ > 300 nm irradiation condition.

Key words: polymerizable complex process, visible light-driven, K4Ce2Nb10O30, water decomposition by photocatalysis

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