文献类型：期刊文献

英文题名：Construction of Carbon Dots Coated Magnetic Hollow Silica Spheres

作者：Zhao, Yue[1];Kang, Shizhao[1];Yao, Pingping[2];Zhao, Yi[2];Liu, Xiangnong[4];Yang, Yuxiang[2];Ni, Chaoying[3]

机构：[1]Shanghai Inst Technol, Sch Chem & Environm Engn, 100 Haiquan Rd, Shanghai 201418, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[3]Univ Delaware, Dept Mat Sci & Engn, Newark, DE 19716 USA;[4]Yangzhou Univ, Anal Test Ctr, Yangzhou 225009, Jiangsu, Peoples R China

年份：2019

卷号：19

期号：11

起止页码：7456

外文期刊名：JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000475752300077)】；

基金：This work was supported by the National Natural Science Foundation of China (20577010 and 20971043).

语种：英文

外文关键词：MHSS; MHSS@CDs; CDs Coated; Super-Paramagnetic

摘要：Magnetic hollow silica spheres (MHSS) with uniform cavity size and shell thickness were prepared using functionalized SiO2 spheres as templates, on which the magnetic particles were uniformly deposited on their surface. The obtained MHSS exhibited a super-paramagnetic behavior at room temperature. Due to large hollow cavity space and super-paramagnetic characteristics, the MHSS were coated with carbon dots with assistance of (3-Aminopropyl) trimethoxysilane (APS). Thus, the preparedMHSS were mixed with citric acid and APS, followed by hydrothermal reaction at 180 degrees C, to generate carbon quantum dots coated MHSS (MHSS@CDs). Scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray powder scattering (XRD), X-ray energy dispersive spectral analysis (EDS), Raman spectra and laser scattering particle analyzer were applied to characterize the MHSS and MHSS@CDs.