文献类型：期刊文献

英文题名：Precise structure-tailoring of multicomponent nanocatalysts enabled by continuous flow-controlled flash nanoprecipitation technique

作者：Fu, Zhinan[1];Bao, Yueping[2];Zhang, Yuhua[1];Yang, Zheng[1];Zhou, Lihui[3];Li, Li[1];Dai, Sheng[3];Hu, Xiao[4,5];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]Nankai Univ, Coll Environm Sci & Engn, MOE Key Lab Pollut Proc & Environm Criteria, Tianjin 300350, 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]Nanyang Technol Univ, Nanyang Environm & Water Res Inst, Environm Chem & Mat Ctr, Singapore 637141, Singapore;[5]Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore

年份：2024

卷号：351

外文期刊名：SEPARATION AND PURIFICATION TECHNOLOGY

收录：;EI(收录号：20242216171857);WOS:【SCI-EXPANDED(收录号:WOS:001247976800002)】；

基金：The authors would like to acknowledge National Key Research and Development Program of China (2023YFD1700303) and China Schol- arship Council (CSC) for financial support.

语种：英文

外文关键词：Flash nanoprecipitation; Structural control; Bismuth oxyhalide; Photocatalytic degradation

摘要：Nanostructured catalysts with diverse compositions offer an exciting prospect for various catalytic applications. The precise control of nanostructures allows to tune the physicochemical properties of nanocatalysts and improve their performance. However, most preparative methods rely on conventional batch systems, which require tedious procedures and cause low productivity. Herein, we reported a novel engineered flash nanoprecipitation (FNP) technique to synthesize well-structured nanocatalysts in a continuous-flow procedure with intelligent operation and high productivity, in which a series of multicomponent bismuth oxyhalides (BiOClxBr1x) were demonstrated as the model catalysts. This method was established on the uninterrupted continuous synthesis of BiOClxBr1-x with precisely controlled microstructure by simply altering the flow rate ratio of precursor fluids in the reactor. The computational fluid dynamics (CFD) simulation showed that the automized flow setup could achieve the accurate control over the intensified fluid mixing. Significantly, a volcano relationship between the halogen compositions and catalytic activities toward photodegradation of tetracycline (TC) was observed, which indicated that the structural changes enabled band structure-dependent regulation. The FNPprocessed BiOCl0.75Br0.25 possessed a balanced redox ability and light absorption, thus located at the peak of volcano with a five-fold enhancement of intrinsic photocatalytic activity. Overall, this work provides a promising prospect of continuous-flow technique in the engineered manufacturing of the advanced nanomaterials, offering fine-tuning of the nanostructures of materials with low cost and high productivity.