石墨烯复合膜制备工艺及其对氕氚的分离研究  

Preparation process of graphene composite membrane and its application in separation of protium-tritium

作　　者：刘玉昆 黄群英[1] 柳伟平 周勋 LIU Yu-kun;HUANG Qun-ying;LIU Wei-ping;ZHOU Xun(Institute of Nuclear Energy Safety Technology,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,China;University of Science and Technology of China,Hefei 230026,China)

机构地区：[1]中国科学院合肥物质科学研究院核能安全技术研究所,安徽合肥230031 [2]中国科学技术大学,安徽合肥230026

出　　处：《现代化工》2022年第11期189-193,200,共6页Modern Chemical Industry

摘　　要：采用真空热压和热释胶转移-热压法2种工艺制备了石墨烯复合膜,同时利用其开展了氚水富集的实验研究。结果表明,真空热压工艺热压温度过高将导致复合膜的质子传导性能衰减,且大面积石墨烯转移成功率低;而热释胶转移-热压法工艺可灵活制备不同尺寸的复合膜,且复合膜性能较为稳定。在此基础上,利用热释胶转移-热压法成功制备了反应面积为2 cm×2 cm的石墨烯复合膜,利用复合膜对比活度为3.51×10^(5)Bq/L的氚水进行电解富集实验,氕氚分离系数可达10.45。Graphene has a subatomic selectivity and can be used to construct solid electrolytic cells for tritium-containing wastewater treatment.Graphene composite film is prepared respectively by vacuum hot press process and hot release glue transfer-hot press process,and used to study on the enrichment of tritium in tritium-containing water.Results show that over-high temperature in vacuum hot press process leads to the attenuation of proton conductivity of the composite membrane accompanying the low efficiency of large-area graphene transfer.The hot release glue transfer-hot press process can flexibly prepare the composite membrane with different sizes and stable performance.On this basis,a graphene composite membrane with a reaction area of 2×2 cm~2 is prepared by hot release glue transfer-hot press method,and used for the electrolytic enrichment experiments of tritium-containing water with a contrast activity of 3.51×10^(5)Bq·L^(-1).The results show that the separation coefficient of protium-tritium reaches 10.45.

关 键 词：石墨烯 亚原子选择性 氕氚分离 固体电解池 

分 类 号：TL942[核科学技术—辐射防护及环境保护]