文献类型：期刊文献

英文题名：The Poly(acrylonitrule-co-acrylic acid)-graft- β-cyclodextrin hydrogel for thorium(IV) adsorption

作者：Duan, Guojian[1]; Zhong, Qiangqiang[2]; Bi, Lei[2]; Yang, Liu[2]; Liu, Tonghuan[2]; Shi, Xiaoning[1]; Wu, Wangsuo[2]

第一作者：段国建

通信作者：Liu, Tonghuan

机构：[1] College of Pharmacy, Gansu University of Chinese Medicine, Lanzhou, 730000, China; [2] Radiochemistry Laboratory, School of Nuclear Science and Technology, Lanzhou University, Lanzhou, 730000, China

第一机构：甘肃中医药大学药学院（西北中藏药协同创新中心办公室）

年份：2017

卷号：9

期号：6

外文期刊名：Polymers

收录：EI(收录号：20172403756146);Scopus(收录号：2-s2.0-85020309960)

基金：We thanks for the financial support from National Nature Science Foundation of China (No. 21501082), 2015 Research Projects of Gansu University of Traditional Chinese Medicine (No. 2305137401), and the support from the Natural Science Foundation of Gansu Province (No. 148RJZA074).

语种：英文

外文关键词：Actinides - Adsorption - Ascorbic acid - Cyclodextrins - Desorption - Fourier transform infrared spectroscopy - Hydrogels - Ionic strength - Isotherms - Scanning electron microscopy - Thorium metallography

摘要：In this report, the β-CD(AN-co-AA) hydrogel was used to remove the thorium(IV) [Th(IV)] from the water system, and the new adsorbent was characterized through Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and X-ray diffraction (XRD). The influences of contact time, pH value, ionic strength, solid-liquid ratio, initial Th(IV) concentration, and temperature on Th(IV) adsorption onto the functional hydrogel were researched. The results showed that the experimental data followed the Langmuir isotherm and the maximum adsorption capacity (qmax) for Th(IV) was 692 mg/g at pH 2.95, which approached the calculated (qe) 682 mg/g. The desorption capacity of Th(IV) in different HNO3 concentrations ranging from 0.005 to 0.5 M was also studied, and the percentage of the maximum desorption was 86.85% in the condition of 0.09 M HNO3. The selectivity of β-CD(AN-co-AA) hydrogel was also be studied, the results indicated that this material retained the good adsorption capacity to Th(IV) even when the Ca2+, Mg2+, or Pb2+ existed in the system. The findings indicate that β-CD(AN-co-AA) can be used as a new candidate for the enrichment and separation of Th(IV), or its analogue actinides, from large-volume solution in practical application. ? 2017 by the authors.