硫化亚铜/四针状氧化锌晶须纳米复合材料的制备及其光催化性能

doi:10.1016/S1872-2067(11)60380-X

催化学报 ›› 2012, Vol. 33 ›› Issue (5): 802-807.DOI: 10.1016/S1872-2067(11)60380-X

硫化亚铜/四针状氧化锌晶须纳米复合材料的制备及其光催化性能

吴德智, 范希梅*, 代佳, 刘花蓉, 刘红, 张冯章

西南交通大学材料科学与工程学院, 材料先进技术教育部重点实验室, 四川成都 610031

收稿日期:2011-12-09 修回日期:2012-02-27 出版日期:2012-05-09 发布日期:2012-05-09

Preparation and Photocatalytic Properties of Cu2S/Tetrapod-Like ZnO Whisker Nanocomposites

WU Dezhi, FAN Ximei*, DAI Jia, LIU Huarong, LIU Hong, ZHANG Fengzhang

Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China

Received:2011-12-09 Revised:2012-02-27 Online:2012-05-09 Published:2012-05-09

摘要/Abstract

摘要： 在聚乙烯吡咯烷酮的辅助下, 采用多元醇法制备了不同铜/锌摩尔比的硫化亚铜/四针状氧化锌晶须纳米复合材料, 并利用 X 射线衍射、场发射扫描电镜、X 射线光电子能谱和紫外-可见漫反射光谱对样品进行了表征. 结果表明, 在紫外光照射下, 样品对甲基橙的光降解效率优于纯 ZnO 晶须. 在铜/锌摩尔比低于 4% 时, 样品的光催化性能随着铜/锌摩尔比增加而增加, 但随着铜/锌摩尔比的继续增加, 样品的光催化性能下降. 此外, 还采用周期实验来评价催化剂的稳定性. 结果表明, 该催化剂具有优异的光催化稳定性.

关键词: 氧化锌, 硫化亚铜, 多元醇法, 光催化性能, 甲基橙

Abstract: Nanocomposites of tetrapod-like ZnO whisker (T-ZnOw) with loaded Cu₂S were synthesized with different Cu/Zn molar ratios with the assistant of poly(vinyl pyrrolidone) (PVP) by the polyol process. The composite samples were characterized by X-ray diffraction, field emission scanning electron microscopy, X-ray photoelectron spectroscopy, and UV-visible diffuse reflectance spectroscopy. The photocatalytic activities for the Cu₂S/T-ZnOw nanocomposites increased with Cu/Zn molar ratio up to 4%, and then decreased with further increase of the Cu/Zn molar ratio up to 10%. The Cu₂S/T-ZnOw nanocomposites exhibited higher activity than T-ZnOw for the photocatalytic degradation of methyl orange. Recycling experiments were also performed. The photocatalytic activity of the photocatalyst showed no decrease after three cycles, which demonstrated that the Cu₂S/T-ZnOw photocatalyst had excellent stability.

Key words: zinc oxide, copper sulphide, polyol method, photocatalytic performance, methyl orange

吴德智, 范希梅, 代佳, 刘花蓉, 刘红, 张冯章. 硫化亚铜/四针状氧化锌晶须纳米复合材料的制备及其光催化性能[J]. 催化学报, 2012, 33(5): 802-807.

WU De-Zhi, FAN Xi-Mei, DAI Jia, LIU Hua-Rong, LIU Hong, ZHANG Feng-Zhang. Preparation and Photocatalytic Properties of Cu2S/Tetrapod-Like ZnO Whisker Nanocomposites[J]. Chinese Journal of Catalysis, 2012, 33(5): 802-807.

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硫化亚铜/四针状氧化锌晶须纳米复合材料的制备及其光催化性能

Preparation and Photocatalytic Properties of Cu2S/Tetrapod-Like ZnO Whisker Nanocomposites

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