writer：Yangang He, Zehong Cheng, Yuting Qin, Bin Xu, Linggui Ning, Li Zhou*
keywords：Magnetic materials，Nanoparticles，Hyperbranched polyglycerol，Adsorption，Dye
source：期刊
specific source：Mater. Lett. 2015, 151, 100-103
Issue time：2015年
A straightforward approach for fabricating multihydroxy hyperbranched polyglycerol (HPG) capped Fe₃O₄ (Fe₃O₄/HPG) nanoparticle is reported. The obtained Fe₃O₄/HPG nanoparticle with numerous surface hydroxyl groups shows uniform size and shape, excellent water-dispersibility, and strong magnetic property. The surface property of Fe₃O₄/HPG nanoparticle can be readily tailored as confirmed by preparing multicarboxylic Fe₃O₄/HPG-COOH nanoparticle in this paper. On the basis of its excellent magnetic performance and multiple negatively charged carboxylic groups, the Fe₃O₄/HPG-COOH sample can be utilized as a highly efficient adsorbent to remove cationic dyes from water. Moreover, it can be regenerated and reused for several times without compromise of adsorption efficiency