| 水热法制备NiS/Cd1-xZnxS及其高效光催化产氢性能 |
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| 引用本文： | 林彩芳,陈小平,陈澍,上官文峰.水热法制备NiS/Cd1-xZnxS及其高效光催化产氢性能[J].物理化学学报,2015,31(1):153-158. |
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| 作者姓名： | 林彩芳 陈小平 陈澍 上官文峰 |
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| 作者单位： | Research Center for Combustion and Environment Technology, Shanghai Jiao Tong University, Shanghai 200240, P. R. China |
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| 基金项目： | 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 |
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| 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 (1840μmol?h-1)获得最好活性,是Cd0.3Zn0.7S (884μmol?h-1)的2.1倍,高于0.5%(质量分数, w) Pt (1390μmol?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.
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| 关 键 词： | Cd1-xZnxS NiS 水热法 光催化活性 产氢 |
| 收稿时间： | 2014-10-08 |
| 修稿时间： | 2014-11-17 |
Preparation of NiS-Modified Cd1-xZnxS by a Hydrothermal Method and Its Use for the Efficient Photocatalytic H2 Evolution |
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| LIN Cai-Fang
,
CHEN Xiao-Ping
,
CHEN Shu
,
SHANGGUAN Wen-Feng.Preparation of NiS-Modified Cd1-xZnxS by a Hydrothermal Method and Its Use for the Efficient Photocatalytic H2 Evolution[J].Acta Physico-Chimica Sinica,2015,31(1):153-158. |
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| Authors: | LIN Cai-Fang CHEN Xiao-Ping CHEN Shu SHANGGUAN Wen-Feng |
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| Institution: | Research Center for Combustion and Environment Technology, Shanghai Jiao Tong University, Shanghai 200240, P. R. China |
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| 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. |
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| Keywords: | 1-xZnxS'' '''') Cd1-xZnxS" target="_blank">">Cd1-xZnxS NiS Hydrothermal method Photocatalytic activity Hydrogen production |
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