物理化学学报 >> 2011, Vol. 27 >> Issue (10): 2406-2410.doi: 10.3866/PKU.WHXB20110929

催化和表面科学 上一篇    下一篇

钴掺杂二氧化钛的光催化制氢性能

闫石1, 黄勤栋1, 林敬东1,2, 袁友珠1,2,3, 廖代伟1,2,3   

  1. 1. 厦门大学化学化工学院化学系, 福建厦门 361005
    2. 醇醚酯化工清洁生产国家工程实验室, 福建厦门 361005
    3. 固体表面物理化学国家重点实验室, 福建厦门 361005
  • 收稿日期:2011-04-01 修回日期:2011-06-24 发布日期:2011-09-27
  • 通讯作者: 林敬东 E-mail:jdlin@xmu.edu.cn
  • 基金资助:

    国家重点基础研究发展规划项目(973)(2011CBA00508)资助

Photocatalytic Activity of Cobalt Doped Titania for H2 Evolution

YAN Shi1, HUANG Qin-Dong1, LIN Jing-Dong1,2, YUAN You-Zhu1,2,3, LIAO Dai-Wei1,2,3   

  1. 1. Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian Province, P. R. China
    2. National Engineering Laboratory for Green Chemical Productions of Alcohols-Ethers-Esters, Xiamen 361005, Fujian Province, P. R. China
    3. State Key Laboratory of Physical Chemistry of Solid Surfaces, Xiamen 361005, Fujian Province, P. R. China
  • Received:2011-04-01 Revised:2011-06-24 Published:2011-09-27
  • Contact: LIN Jing-Dong E-mail:jdlin@xmu.edu.cn
  • Supported by:

    The project was supported by the National Key Basic Research Program of China (973) (2011CBA00508).

摘要: 采用聚合络合法(PCM)制备出钴掺杂二氧化钛(Co/TiO2)光催化剂. 以热重-差示扫描量热同步热分析(TGA-DSC), 傅里叶变换红外(FT-IR)光谱, X 射线粉末衍射(XRD), 氮气吸附-脱附, 紫外-可见漫反射光谱(UV-Vis DRS), X射线光电子能谱(XPS)等手段对材料进行了表征. 采用光催化制氢作为探针反应, 以氢气的产量评价材料的光催化性能. 结果表明: 采用聚合络合法制备的样品主体成分为锐钛矿晶型的二氧化钛, 钴元素呈高度分散, 钴的掺杂能够明显提升二氧化钛光催化材料的光催化制氢活性, 当钴钛物质的量之比为0.3%时,催化剂具有最佳的光催化制氢活性, 达到2499 μmol, 是同等条件下制备的无掺杂二氧化钛的近六倍. 还对钴离子掺杂增强机理进行了探讨.

关键词: 钴掺杂, 二氧化钛, 聚合络合法, 光催化, 制氢

Abstract: Cobalt-doped titania (Co/TiO2) photocatalysts were synthesized by the polymerized complex method (PCM). The materials were characterized by thermogravimetric analysis-differential scanning calorimetry (TGA-DSC), Fourier transform-infrared spectroscopy (FT-IR), X-ray diffraction (XRD), nitrogen adsorption-desorption, ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS) and X-ray photoelectron spectroscopy (XPS). The photocatalytic activity of the samples was evaluated by hydrogen evolution. The results show that anatase type titania exists in the materials and cobalt is evenly dispersed. The activity of the cobalt doped titania was found to be superior to that of pure titania. The maximum activity obtained at 0.3% Co/Ti molar ratio was nearly 6 times as high as that of pure titania. The amount of hydrogen produced was up to 2499 μmol. The doping mechanism of cobalt is discussed.

Key words: Cobalt-doped, Titania, Polymerized complex method, Photocatalysis, H2 evolution

MSC2000: 

  • O643