文献类型：期刊文献

英文题名：Continuous preparation of dual-mode luminescent LaPO4:Tb3+,Yb3+ nanoparticles by reactive flash nanoprecipitation

作者：Fan, Wenting[1];Zhao, Fang[1];Dou, Jiahong[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

年份：2021

卷号：239

外文期刊名：CHEMICAL ENGINEERING SCIENCE

收录：;EI(收录号：20212110405036);WOS:【SCI-EXPANDED(收录号:WOS:000661868200009)】；

基金：We gratefully thank the financial support from National Natural Science Foundation of China (21808059, 51761135128 and 51773061) .

语种：英文

外文关键词：Flash nanoprecipitation; Lanthanide phosphate nanoparticles; Upconversion luminescence; Downconversion luminescence

摘要：The efficient and scalable synthesis of lanthanide-doped NPs, which exhibit down- and upconversion luminescent properties simultaneously, is still a main challenge that are hindering their adoption. Herein, we employed a facile method, i.e. reactive flash nanoprecipitation, to fabricate dual-mode luminescent lanthanide phosphate (LnPO(4)) NPs: lanthanum phosphate (LaPO4) co-doped with Tb3+ and Yb3+. The lanthanide source streams and phosphate ion source streams were efficiently mixed in a multi-inlet vortex mixer reactor, and the use of a stabilizer was found to facilitate the formation of uniformly-dispersed LnPO(4) nanocrystals. It is demonstrated that the annealed LnPO(4) NPs exhibited intense down- and upconversion emission under UV and NIR irradiation, respectively. Notably, through adjusting the LnPO(4) to stabilizer mass ratio, the NP diameter could be tuned in a range between 50 and 200 nm, and the composition of LaPO4:Tb3+,Yb3+ NPs could be easily tuned by adjusting the flow rate ratio of the feed streams. (C) 2021 Elsevier Ltd. All rights reserved.