文献类型：期刊文献

英文题名：Microstructural control of bismuth oxyhalides photocatalysts enabled by a continuous-flow technique for enhanced photocatalytic oxidation processes

作者：Yang, Zheng[1];Fu, Zhinan[2];Ma, Jun[1];Zhou, Lihui[3];Jiang, Xianwu[1];Ma, Enguang[4];Li, Li[1];Guo, Xuhong[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Suzhou Lab, Suzhou 215100, Peoples R China;[3]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[4]Dezhou Univ, Shandong Prov Key Lab Monocrystalline Silicon Semi, Dezhou 253023, Peoples R China

年份：2025

卷号：13

期号：3

外文期刊名：JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING

收录：;EI(收录号：20252218536514);WOS:【SCI-EXPANDED(收录号:WOS:001509481300001)】；

基金：The authors would like to acknowledge National Key Research and Development Program of China (2023YFD1700303) . Additional support was provided by the Feringa Nobel Prize Scientist Joint Research Center.

语种：英文

外文关键词：Bismuth oxyhalides; Peroxymonosulfate; Advanced oxidation processes; Continuous-flow technique; Controlled fabrication

摘要：Bismuth oxyhalides (BiOX) are being pursued as highly effective heterogeneous photocatalysts in the peroxymonosulfate (PMS) based advanced oxidation processes (AOPs). However, it is still a great challenge to develop new synthetic methods with controllability, stability and scalability for industrial application. In this work, we present a continuous and easily scalable flash nanoprecipitation (FNP) technique for the controlled fabrication of BiOX (X = Cl, Br, I) photocatalysts using a multi-inlet vortex mixer. By optimizing the Re number and solvent composition, the BiOX with small particle size (approximately 100 nm) and narrow size distribution (PDI = 0.10) could be fabricated. Different from the traditional batch-synthesized BiOX, FNP-synthesized BiOX exhibited significantly enhanced photoelectrochemical properties. By taking the rhodamine B oxidation degradation as a representative, we have investigated the structure-dependent photocatalytic activity of photocatalysts by using BiOX with different components and morphologies. As a result, the optimal photocatalyst BiOX shows superior photocatalytic performance with RhB removal rate of 99.9 % within 9 min, exceeding those of many other advanced photocatalysts. Furthermore, the photocatalytic activity of photocatalysts remains nearly unchanged under harsh reaction conditions and recycling application, revealing exceptional stability and reusability. This study has raised an effective engineered method for the synthesis of advanced heterogeneous photocatalysts for AOPs applications.