Highly efficient and flexible preparation of water-dispersed Fe3O4 nanoclusters using a micromixer

查看全文 作　　者：Xiaojing [1]Liu;Yangcheng [1]Lu 机构地区：[1]State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China 出　　处：《Particuology》索引2019年第17卷第4期,共7页 基　　金：The authors acknowledge financial support from the National Natural Science Foundation of China (Grant Nos. 21422603, U1662120). 摘　　要：Solvent exchange is widely used to synthesize magnetic nanoclusters (MNCs).However,it remains a challenge to increase the production and decrease the addition ofsurfactants,both of which are important for the application and functionalization of MNCs.Herein,we use a rapid and tunable mixing method to control the assembly of Fe3O4 nanoparticles.This method involves shear-mixing in a channel of a Tjunction micromixer.Smaller and more monodisperse MNCs were synthesized with less surfactant,when compared with conventional bulk synthesis.Varying the mixing rate and the formula of the magnetic suspension allowed for the flexible adjustment of the nanocluster size while maintaining a uniformly sized MNCs.The flow synthesis and ease of scale-up make this method potentially suitable for broad industrial application. 关 键 词：FE3O4 MAGNETIC nanoparticle MAGNETIC NANOCLUSTER Micromixer-assisted continuous SYNTHESIS Bulk SYNTHESIS