物理化学学报 >> 2015, Vol. 31 >> Issue (1): 153-158.doi: 10.3866/PKU.WHXB201411175

催化和表面科学 上一篇    下一篇

水热法制备NiS/Cd1-xZnxS及其高效光催化产氢性能

林彩芳, 陈小平, 陈澍, 上官文峰   

  1. 上海交通大学燃烧与环境技术中心, 上海 200240
  • 收稿日期:2014-10-08 修回日期:2014-11-17 发布日期:2014-12-25
  • 通讯作者: 上官文峰 E-mail:shangguan@sjtu.edu.cn
  • 基金资助:

    国家高技术研究发展计划项目(863) (2012AA051501)和上海市科委国际合作项目(12160705700)资助

Preparation of NiS-Modified Cd1-xZnxS by a Hydrothermal Method and Its Use for the Efficient Photocatalytic H2 Evolution

LIN Cai-Fang, CHEN Xiao-Ping, CHEN Shu, SHANGGUAN Wen-Feng   

  1. Research Center for Combustion and Environment Technology, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
  • Received:2014-10-08 Revised:2014-11-17 Published:2014-12-25
  • Contact: SHANGGUAN Wen-Feng E-mail:shangguan@sjtu.edu.cn
  • Supported by:

    The project was supported by the National High Technology Research and Development Programof China (863) (2012AA051501) and International Cooperation Project of Shanghai Municipal Science and Technology Commission, China (12160705700).

摘要:

利用水热法制备NiS负载的Cd1-xZnxS光催化剂. 结果表明: 在0.35 mol·L-1 Na2SO3 和0.25 mol·L-1 Na2S牺牲剂下, 0.5% (摩尔分数, y) NiS/Cd0.3Zn0.7S (1840 μmol·h-1)获得最好活性,是Cd0.3Zn0.7S (884 μmol·h-1)的2.1倍, 高于0.5% (质量分数, w) Pt (1390 μmol·h-1) 的产氢活性. 测得其在λ=420 nm附近的表观量子效率为36.8%. X射线衍射(XRD)、紫外-可见漫反射光谱(UV-Vis DRS)、透射电子显微镜(TEM)以及X射线光电子能谱(XPS)的表征结果表明, NiS作为产氢活性位, 转移光生电子,因此提高了光催化产氢活性.

关键词: Cd1-xZnxS, NiS, 水热法, 光催化活性, 产氢

Abstract:

NiS-modified Cd1-xZnxS has been prepared using a simple hydrothermal method. Notably, the H2 evolution rate of 0.5% (y, molar fraction) NiS/Cd0.3Zn0.7S(1840 μmol·h-1) was found to be 2.1- and 1.3-fold greater than those of Cd0.3Zn0.7S(884 μmol·h-1) and 0.5% (w, mass fraction) Pt (1390 μmol·h-1), respectively, when 0.35 mol·L-1 Na2SO3 and 0.25 mol·L-1 Na2Swere used as sacrificial agents. The apparent quantumefficiency of 0.5% (y) NiS/Cd0.3Zn0.7S at 420 nm was 36.8%. The characterization of this material by X-ray diffraction (XRD), ultraviolet-visible diffuse reflection spectroscopy (UV-Vis DRS), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS) showed that the NiS particles provided the active sites required for H2 evolution and transferring the photo generated electrons, and therefore enhanced the photocatalytic activity of the catalyst towards H2 production.

Key words: Cd1-xZnxS, NiS, Hydrothermal method, Photocatalytic activity, Hydrogen production

MSC2000: 

  • O643