文献类型：期刊文献

英文题名：Preparation and Characterization of Monodisperse Magnetic Carbon Microspheres with Controllable Shell Thickness and High Water Solubility

作者：Liang, Shengji[1]; Chen, Kui[1]; Han, Jinling[1]; Wu, Bin[1]

机构：[1] School of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, China

年份：2019

卷号：562

期号：1

外文期刊名：IOP Conference Series: Materials Science and Engineering

收录：EI(收录号：20193707437661)

语种：英文

外文关键词：Coatings - Microspheres - Magnetism - Shells (structures) - Magnetic cores - Carbon

摘要：Core-shell magnetic carbon microspheres with good monodispersity and uniformity were obtained. Good monodispersity was achieved by adding a dispersant in the solvothermal synthesis of magnetic core, as the criterion for good dispersibility was set up through dynamic light scattering (DLS). The excellent dispersing agent (Poly (4-styrenesulfonic acid-co-maleic acid, SS: MA = 3:1) sodium salt, PSSMA) has been selected among three dispersants, which greatly improves the dispersibility of the magnetic core in the coating environment, thereby obtaining a core-shell structure with uniform coating and monodispersity. Carbon shell was gained by deposit coating process of resorcinol formaldehyde resin (RF) onto the magnetic core and then subsequent carbonization under N2 atmosphere. At the same time, the carbon shell thickness can be adjusted up to 70 nm by adjusting the RF shell thickness which is tunable ranging from 30 to120 nm. ? Published under licence by IOP Publishing Ltd.