纳米WO3的制备工艺探讨与结构表征

doi:10.7517/j.issn.1674-0475.2009.01.48

影像科学与光化学 ›› 2009, Vol. 27 ›› Issue (1): 48-56.DOI: 10.7517/j.issn.1674-0475.2009.01.48

纳米WO₃的制备工艺探讨与结构表征

孟庆华, 于昕, 朱亦仁

徐州师范大学, 化学化工学院, 江苏徐州221116

收稿日期:2008-04-03 修回日期:2008-07-31 出版日期:2009-01-23 发布日期:2009-01-23
基金资助:
徐州师范大学博士返校科研启动资金资助

Preparation and Characterization of WO₃ Nano-Powders

MENG Qing-hua, YU Xin, ZHU Yi-ren

School of Chemistry and Chemical Engineering, Xuzhou Normal University, Xuzhou 221116, Jiangsu, P. R. China

Received:2008-04-03 Revised:2008-07-31 Online:2009-01-23 Published:2009-01-23

摘要/Abstract

摘要： 通过气液反应制备了纳米WO₃光催化剂,并用紫外吸收光谱、粉末X射线衍射(XRD)、透射电子显微镜(TEM)、扫描电子显微镜(SEM)、能量散射谱(EDS)等手段对催化剂进行了表征.讨论了乙二醇加入量和表面活性剂十二烷基苯磺酸钠对催化剂粒度大小和形貌的影响.结果表明:当水和乙二醇的比例为25:75时所得WO₃粒径为30 nm左右.在此比例条件下加入0.1 g表面活性剂十二烷基苯磺酸钠,可制得片状WO₃,粒径约为80 nm.对自制的两种纳米WO₃光催化剂在紫外光照射时降解苯酚的活性进行了初步探讨,两者的催化性能均明显优于商品WO₃.

关键词: 纳米WO₃, 表征, 光催化活性

Abstract: The WO₃ nano-powders have been prepared by method of gas-liquid reaction in this work.The techniques such as solid UV/vis spectra,XRD,TEM,SEM,EDS were used to characterize the catalyst.Effects of glycol concentration along with the adding of surfactant SDBS on the particle size and the morphology of the photocatalysts were discussed in detail.The photoelectrochemical actions of WO₃ powders were studied by degradating the phenol.It was showed that when the proportion between water and glycol is 25:75,The size of WO₃ powders is about 30 nm and sheet WO₃ which diameter is about 80 nm can be obtained by adding 0.1 g surfactant.Both of them have much better photocatalytic activities than the product from market.

Key words: WO₃ nano-powders, characterization, photocatalytic activities

中图分类号:

孟庆华, 于昕, 朱亦仁. 纳米WO₃的制备工艺探讨与结构表征[J]. 影像科学与光化学, 2009, 27(1): 48-56.

MENG Qing-hua, YU Xin, ZHU Yi-ren. Preparation and Characterization of WO₃ Nano-Powders[J]. Imaging Science and Photochemistry, 2009, 27(1): 48-56.

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纳米WO₃的制备工艺探讨与结构表征

Preparation and Characterization of WO₃ Nano-Powders

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