偕胺肟改性聚丙烯腈电极材料的制备及其从海水中吸附铀试验研究  

Preparation of Amidoxime Modified Electrode Materials and Adsorption Uranium From Seawater

作　　者：高子腾 陈树森[1] 丁海云[1] 宋艳[1] 宿延涛[1] 勾阳飞 常华[1] 吴浩天 GAO Ziteng;CHEN Shusen;DING Haiyun;SONG Yan;SU Yantao;GOU Yangfei;CHANG Hua;WU Haotian(Beijing Research Institute of Chemical Engineering and Metallurgy,CNNC,Beijing 101149,China)

机构地区：[1]核工业北京化工冶金研究院,北京101149

出　　处：《湿法冶金》2022年第5期437-443,共7页Hydrometallurgy of China

摘　　要：研究了以导电碳毡为基材,采用非均相法制备偕胺肟改性聚丙烯腈电极材料(AO-PAN),考察了AO-PAN对低浓度加标海水中铀的吸附性能,利用红外光谱、扫描电子显微镜对AO-PAN进行表征。结果表明:吸附时间和温度与AO-PAN吸附铀呈正相关关系;电化学吸附过程中,交流电压为-3~0 V时吸附效果最好;溶液pH为5~8,铀吸附率在60%以上,铀吸附量达1 136 mg/g。该偕胺肟改性聚丙烯腈电极材料有望用于从海水中吸附铀。Amidoxime modified polyacrylonitrile electrode material(AO-PAN) was prepared by heterogeneous method with conductive carbon felt as substrate.The adsorption properties of AO-PAN for uranium in low concentration seawater were investigated.The infrared spectroscopy and scanning electron microscope were used to characterize AO-PAN,The results show that the adsorption time and temperature are positively correlated with the adsorption of uranium using AO-PAN.The adsorption effect is the best under the condition of AC voltage of-3~0 V in the electrochemical adsorption process.Under the condition of solution pH of 5~8,the uranium adsorption rate is more than 60%,and uranium adsorption capacity reaches 1 136 mg/g.The amidoxime modified polyacrylonitrile electrode material is expected to be used to adsorb uranium from seawater.

关 键 词：海水提铀 电化学吸附 偕胺肟基 聚丙烯腈 

分 类 号：TL212[核科学技术—核燃料循环与材料] TQ424[化学工程]