偕胺肟基高分子材料的可控合成及对铀的吸附性能研究

辐射防护 ›› 2017, Vol. 37 ›› Issue (2): 145-152.

偕胺肟基高分子材料的可控合成及对铀的吸附性能研究

龚籽月, 匙芳廷, 魏贵林, 张硕, 安鹏

西南科技大学核废物与环境安全国防重点学科实验室,四川绵阳 621010

收稿日期:2016-01-11 出版日期:2017-03-20 发布日期:2021-11-11
通讯作者: 匙芳廷。E-mail: chifangting@163.com
作者简介:龚籽月(1995—),女, 2015年毕业于西南科技大学国防科技学院核化工与核燃料工程专业,现为本专业硕士研究生。E-mail:gongziyueswust@163.com
基金资助:
国家自然科学基金资助项目(21401152);西南科技大学博士基金(13zx7131);核废物与环境安全国防重点学科实验室预研基金(15yyhk08);核废物与环境安全国防重点学科实验室团队项目(14tdhk01);西南科技大学大学生创新基金项目(cx16-023)。

Controlled synthesis of amidoxime polymer materials and its absorption of Uranium

Gong Ziyue, Chi Fangting, Wei Guilin, Zhang Shuo, An Peng

Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory, Southwest University of Science and Technology, Sichuan Mianyang 621010

Received:2016-01-11 Online:2017-03-20 Published:2021-11-11

摘要/Abstract

摘要： 以二乙烯基苯和对氯甲基苯乙烯为原料制备基材,采用原子转移自由基聚合的方法接枝丙烯腈,最后氰基用盐酸羟胺还原并经碱处理后制得偕胺肟基高分子材料,采用傅里叶变换红外光谱FTIR、扫描电镜SEM分别测试吸附剂的化学成分和吸附剂的表面形貌,并考察了其对水溶液中铀的吸附性能。结果表明:在吸附剂与浓度50×10^-6(ppm)的铀酰离子溶液的体积比为2∶1(g/L)时吸附效率最好;在此配比下,当pH=4时,吸附量最好,可达24.2 mg/g,吸附平衡时间为1.5 h,二级动力学模型能更好地拟合其对铀吸附。

关键词: 偕胺肟基, 高分子材料, 可控合成, 铀, 吸附性能, 原子转移自由基聚合(ATRP)

Abstract: The divinylbenzene (DVB) and vinylbenzyl chloride (VBC) were used as raw materials, then the Atom Transfer Radical Polymerization (ATRP) method was used to graft acrylonitrile, finally, polyacrylonitrile powder reacted with aqueous hydrochloric acid hydroxylamine to prepare amidoxime ploymer materials. Using fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) techniques, the chemical compositions and microstructure of the absorbent were analyzed. The effects of pH values of initial uranyl ion and different ratios of absorbent to uranyl ion on the absorption were studied. The results showed that the best absorption efficiency occurred when the ratio of absorbent to uranyl ion was 2∶1. The absorption capacity can reach to 24.2 mg/g when the pH value was 4 at this ratio. Furthermore, the kinetic data can be well fitted with the second-order absorption kinetic model.

Key words: amidoxime, polymer materials, controllable synthesis, Uranium, absorption property

中图分类号:

TL212.5

龚籽月, 匙芳廷, 魏贵林, 张硕, 安鹏. 偕胺肟基高分子材料的可控合成及对铀的吸附性能研究[J]. 辐射防护, 2017, 37(2): 145-152.

Gong Ziyue, Chi Fangting, Wei Guilin, Zhang Shuo, An Peng. Controlled synthesis of amidoxime polymer materials and its absorption of Uranium[J]. RADIATION PROTECTION, 2017, 37(2): 145-152.

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