载钛活性炭纤维的制备及其对水中罗丹明B的光催化降解  

Preparation of titanium loaded activated carbon fibers and their application in aqueous Rhodamine B photocatalytic degradation

作　　者：陈培[1] 刘润龙 朱丹[1] 江林[1] 郎林[1] 冯景伟[1,2] 袁守军[1] 

机构地区：[1]合肥工业大学,土木与水利工程学院,合肥230009 [2]河海大学,水文水资源与水利工程科学国家重点实验室,南京210098

出　　处：《环境化学》2015年第1期144-149,共6页Environmental Chemistry

基　　金：国家自然科学基金项目(51208163,51108149);河海大学水文水资源与水利工程科学国家重点实验室开放课题(2013491211)资助

摘　　要：通过溶胶凝胶法制备载钛活性炭纤维(TiO2-ACF)复合材料,采用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、紫外-可见吸收(UV-Vis)、傅里叶红外分光光度计(FT-IR)、X射线光电子能谱(XPS)对TiO2-ACF进行了表征,并研究了TiO2-ACF对水中罗丹明B的光催化性能.结果表明,煅烧温度为400—600℃时,负载在ACF上的TiO2为锐钛矿型,当煅烧温度上升到700℃时,TiO2开始出现金红石型,600℃时煅烧制备的TiO2-ACF对水中罗丹明B的降解效果最佳;TiO2-ACF对罗丹明B的吸附能力比ACF低;但是在紫外光条件下,60 min后TiO2-ACF对罗丹明B的降解率比ACF、TiO2对罗丹明B的降解率分别高8.6%和16.2%,TiO2-ACF表现出较高的光催化活性.Titanium loaded activated carbon fiber （ TiO2-ACF） composite materials were prepared by the sol-gel method. The structural features of the TiO2-ACF were investigated by XRD, SEM, UV？Vis, FT？IR and XPS. And the photocatalytic performance of the TiO2-ACF was tested by photocatalytic degradation of aqueous Rhodamine B （ RhB） . The results showed that the TiO2 loaded on the activated carbon fiber was anatase, when the calcination temperatures were 400—600 ℃, and the phase transformation from anatase to rutile began at 700 ℃, TiO2-ACF calcined at 600 ℃exhibited the best degradation effect for Rhodamine B. The adsorption ability of RhB onto TiO2？ACF was lower than that of ACF, but under the condition of UV irradiation, TiO2？ACF showed higher photocatalytic activity, the degradation rates of RhB were higher than those of ACF and TiO2 by 8？6% and 16.2%, respectively.

关 键 词：载钛活性炭纤维 制备 光催化 罗丹明B 

分 类 号：X703[环境科学与工程—环境工程]