文献类型：期刊文献

英文题名：Synthesis of beta-cyclodextrin derivatives and their selective separation behaviors for U(VI) in solution

作者：Bi, Lei[1];Ma, Jiaju[1];Niu, Zhiwei[1];Duan, Guojian[2];Lei, Zhiwei[1];Wu, Rong[2];Hu, Peizhuo[1];Qian, Lijuan[1];Wu, Wangsuo[1];Liu, Tonghuan[1]

第一作者：Bi, Lei

通信作者：Liu, TH[1]

机构：[1]Lanzhou Univ, Sch Nucl Sci & Technol, Radiochem Lab, Lanzhou 730000, Peoples R China;[2]Gansu Univ Chinese Med, Lanzhou 730000, Peoples R China

第一机构：Lanzhou Univ, Sch Nucl Sci & Technol, Radiochem Lab, Lanzhou 730000, Peoples R China

通信机构：[1]corresponding author), Lanzhou Univ, Sch Nucl Sci & Technol, Radiochem Lab, Lanzhou 730000, Peoples R China.

年份：2020

卷号：326

期号：1

起止页码：719

外文期刊名：JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000560317500003)】；

基金：This research was funded by the National Nature Science Foundation of China (Nos. 21501082, 21571088 and 21762001) and Fundamental Research Funds for the Central Universities (lzujbky-2018-76, lzujbky-2020-kb06).

语种：英文

外文关键词：beta-Cyclodextrin; Acrylic acid; Amidoximation; Uranium; Adsorption

摘要：In this study, four functional beta-cyclodextrin derivatives including amidoxime linear-linked and cross-linked beta-cyclodextrin/acrylonitrile/acrylic terpolymer (l-CD-AO-AA and c-CD-AO-AA), citric acid cross-linked poly-beta-cyclodextrin (PCD), amidoxime cross-linked beta-cyclodextrin and acrylonitrile-acrylic block copolymer (CD-b-AO-AA) were synthesized and properties of beta-CD derivatives were characterized by FT-IR, SEM, TGA and element analysis. The effect of solid liquid ratio of the adsorbents, ionic strength, pH, contact time, initial concentration of U(VI), adsorption temperature, selective adsorption for different metal ions and the reasonable desorption conditions were studied. It was found when content of U(VI) was 22 mg/L, the four functional materials l-CD-AO-AA, c-CD-AO-AA, PCD and CD-AO-b-AA completely adsorbed U(VI) at 0.06 g/L (R approximate to 97%), 0.10 g/L (R approximate to 96%), 0.08 g/L (R approximate to 94%) and 0.52 g/L (R approximate to 94%), respectively.