文献类型：期刊文献

英文题名：Advanced Bi2O2.7/Bi2Ti2O7 composite film with enhanced visible-light-driven activity for the degradation of organic dyes

作者：Fang, Wenzhang[1,2];Zhou, Li[1,2];Shen, Bin[1,2];Zhou, Yi[1,2];Yi, Qiuying[1,2];Xing, Mingyang[1,2];Zhang, Jinlong[1,2]

机构：[1]East China Univ Sci & Technol, Key Lab Adv Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Inst Fine Chem, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2018

卷号：44

期号：8

起止页码：4609

外文期刊名：RESEARCH ON CHEMICAL INTERMEDIATES

收录：;EI(收录号：20180404676746);WOS:【SCI-EXPANDED(收录号:WOS:000439954400003)】；

基金：This work has been supported by National Nature Science Foundation of China (21577036, 21377038, 21237003 and 21677048) and State Key Research Development Program of China (2016YFA0204200) and sponsored by "Chenguang Program" supported by Shanghai Education Development Foundation and Shanghai Municipal Education Commission (14CG30, 16JC1401400) and the Fundamental Research Funds for the Central Universities (22A201514021).

语种：英文

外文关键词：Bi2O2.7; Bi2Ti2O7; Composite film; Photocatalysis; Organic dyes

摘要：Bi2O2.7/Bi2Ti2O7 composite photocatalyst films are synthesized by sol-gel dip-coating. The ratio of adding Bi and Ti precursors can be controlled during the preparation process. The phase structure is confirmed by X-ray diffraction. The UV-visible diffuse reflectance spectrum shows that the composite catalysts present light absorption in the visible region. The obtained Bi2O2.7/Bi2Ti2O7 composite films possess superior photocatalytic degradation of rhodamine B, owing to the visible light response of Bi2O2.7 and the separation of photogenerated electrons and holes between the two components. As a result, the Bi2O2.7/Bi2Ti2O7 (Bi/Ti = 1:1) displays the highest photocatalytic activity under visible light or UV light irradiation for the degradation of different organic dyes, including methyl blue, methyl orange and acid orange 7.