引用本文:
【打印本页】   【HTML】   【下载PDF全文】   View/Add Comment  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 1089次   下载 900 本文二维码信息
码上扫一扫!
分享到: 微信 更多
Preparation and Photo-catalytic Activity of Nano-Iron Oxide/Bentonites
Liu Ying,Li Yimin,Li Haiyang*
Author NameAffiliationE-mail
Liu Ying Laboratory of Environment SpectroscopyAnhui Institute of Optics and Fine MechanicsChinese Academy of SciencesHefei 230031  
Li Yimin Laboratory of Environment SpectroscopyAnhui Institute of Optics and Fine MechanicsChinese Academy of SciencesHefei 230031Department of ChemistryShaoxing College of Arts and SciencesShaoxing 312000  
Li Haiyang* Laboratory of Environment SpectroscopyAnhui Institute of Optics and Fine MechanicsChinese Academy of SciencesHefei 230031Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023 hli@aiofm.ac.cn 
Abstract:
Using the surfactant(PVA)in the preparation process,the nano-iron oxide / Bentonites were prepared through a reaction between a solution of iron salt and a dispersion of Bentonite clay. The X-ray diffraction(XRD)results reveal that the catalysts mainly consist of α-Fe2O3 . The photo-catalytic activity of iron oxide / Bentonites was examined in the photo-assisted degradation of an organic azo-dye Orange Ⅱ. It is found that the photo-catalytic activity of the catalysts is much higher than that of α-Fe2O3 . The experimental results(using the different catalysts in which the quantities of Fe2O3 are equal)demonstrate that the photo-catalytic activity of catalysts is as follows:Fe-A > Fe-B > Fe-C > Fe-D. In addition,the research shows that Orange Ⅱ degradation ratio of heterogeneous photo-Fenton process is higher than that of homogeneous one.
Key words:  Photo-catalytic activity,Orange Ⅱ,Polyvinyl alcohol,Nano-Fe2O3 / Bentonites
FundProject:
纳米Fe2O3/膨润土复合催化剂的制备及光催化活性
刘颖,李益民,李海洋*
摘要:
在合成过程中使用表面活性剂聚乙烯醇(PVA),通过铁盐与膨润土浆液反应制备纳米Fe2O3/膨润土复合催化剂. XRD分析结果表明,该复合物主要是由α-Fe2O3构成;并以橙二为目标污染物,对催化剂的催化活性进行了比较,复合催化剂的催化活性要远大于α-Fe2O3的催化活性;不同催化剂( 含有相同质量的α-Fe2O3)的催化活性为:Fe-A > Fe-B > Fe-C > Fe-D. 此外,对于复相光催化反应和均相光催化反应进行了比较,结果表明,复相光催化降解速率要远大于均相光催化降解速率.
关键词:  光催化活性  橙二  聚乙烯醇  纳米Fe2O3 / 膨润土
DOI:10.1088/1674-0068/17/3/317-320
分类号: