Synthesis and characterization of a novel core–shell magnetic nanocomposite via surface-initiated RAFT polymerization for highly efficient and selective adsorption of uranium(VI)

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成果类型：

期刊论文

作者：

Dai, Zhongran;Zhang, Hui;Sui, Yang;Ding, Dexin*;Hu, Nan;...

通讯作者：

Ding, Dexin

作者机构：

[Ding, Dexin; Zhang, Hui; Li, Le; Dai, Zhongran; Hu, Nan; Wang, Yongdong] Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Peoples R China.

[Sui, Yang] Hunan Taohuajiang Nucl Power Co Ltd, Yiyang 413000, Peoples R China.

通讯机构：

[Ding, Dexin] U

Univ South China, Key Discipline Lab Natl Def Biotechnol Uranium Mi, Hengyang 421001, Peoples R China.

语种：

英文

关键词：

2 bromopropionyl bromide;adsorbent;amidoxime;aminopropyltriethoxysilane;chemical compound;ethyl potassium dithiocarbonate;magnetic nanoparticle;nanocomposite;nanoshell;polyacrylonitrile;tetraethoxysilane;ultrasmall superparamagnetic iron oxide;unclassified drug;uranium;adsorption kinetics;analytical parameters;Article;concentration (parameters);contact time;controlled study;covalent bond;desorption;infrared spectroscopy;isotherm;nanoanalysis;pH;polymerization;reversible addition fragmentation chain transfer;scanning electron microscopy;structure analysis;surface property;synthesis;temperature sensitivity;thermodynamics;thermogravimetry;transmission electron microscopy;vibrating sample magnetometer;X ray photoelectron spectroscopy

期刊：

Journal of Radioanalytical and Nuclear Chemistry

ISSN：

0236-5731

年：

2018

卷：

316

期：

页码：

369-382

DOI：

10.1007/s10967-018-5720-9

基金类别：

National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [U1401231, 51704170, 11405081]; Development Program for Science and Technology for National Defense [B3720132001]; China Postdoctoral Science FoundationChina Postdoctoral Science Foundation [2017M612569]; Research Foundation of Education Bureau of Hunan Province [16C1386]

机构署名：

本校为第一且通讯机构

院系归属：

核资源工程学院

摘要：

In this work, the nanoparticles possessing a macro-initiator (MNPs@SCSOEt) were firstly obtained by surface-initiated RAFT polymerization. The structure of the nanocomposite was characterized by FT-IR, SEM, TEM, TGA, XPS and VSM. The effects of pH, contact time, initial uranium concentrations, coexisting ions and temperature on the U(VI) adsorption by MNPs@PAO were investigated in detail. The adsorption process was found to be in good agreement with pseudo-second order kinetic model and Langmuir adsorption isotherm model. The maximum adsorption...

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Synthesis and characterization of a novel core–shell magnetic nanocomposite via surface-initiated RAFT polymerization for highly efficient and selective adsorption of uranium(VI)

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