文献类型：期刊文献

英文题名：Preparation of Bi4Ti3O12/TiO2 by flame spray pyrolysis for photoelectrocatalytic degradation of tetracycline

作者：Li, Chenchen[1];Lei, Jing[1];Gu, Xiucheng[1];Ju, Jie[1];Jiang, Hao[1];Li, Chunzhong[1];Hu, Yanjie[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Environm Friendly Mat Tech Serv Platform, Key Lab Ultrafine Mat,Minist Educ, Shanghai 200237, Peoples R China

年份：2024

卷号：460

外文期刊名：JOURNAL OF CLEANER PRODUCTION

收录：;EI(收录号：20242116116791);WOS:【SCI-EXPANDED(收录号:WOS:001296359300001)】；

基金：This work was supported by the National Natural Science Foundation of China (22378128, 22108079, U22B20143, U22A20429) , the Science and Technology Commission of Shanghai Municipality (22dz1205900) , Project supported by Shanghai Municipal Science and Technology Major Project, the Fundamental Research Funds for the Central Universities. Additional support was provided by fringe Nobel Prize Scientist Joint Research Center.

语种：英文

外文关键词：Flame spray pyrolysis; Heterostructures; Photoelectrocatalysis; Tetracycline

摘要：The negative effects of the irrational use of antibiotics have been increasing attention from the public, making it urgently needed to develop effective techniques for removing antibiotics from wastewater. Simultaneously, the construction of heterogeneous TiO2 photoanodes can be used to enhance photoelectrocatalytic performance. Herein, we used an advanced method, namely one-step flame spray pyrolysis (FSP) to in-situ prepare Bi4Ti3O12/ TiO2 heterostructures. The ultra-high temperature characteristics of this method facilitated the high dispersion of Bi species on TiO2, leading to the formation of the Bi4Ti3O12 phase within milliseconds. Bi4Ti3O12 forms a "Z" type heterojunction with TiO2, improving charge separation and enhancing electron transfer efficiency. The photoeletrocatalytic degradation effect of Bi4Ti3O12/TiO2 on tetracycline is significantly improved. Under simulated sunlight irradiation for 75 min and 1V voltage, the removal of tetracycline can reach 99.7%. The recycling degradation experiments demonstrated the remarkable reusability and stability of Bi4Ti3O12/TiO2, while the evaluation of degradation intermediates and toxicity analysis of tetracycline were also conducted. Furthermore, free radical trapping experiments confirmed that hydroxyl radicals and holes play a significant role in the removal of tetracycline.