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3.51×10⁵ 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 cm² 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 3.51×10⁵ Bq·L^-1.The results show that the separation coefficient of protium-tritium reaches 10.45.

刘玉昆(1996-),男,硕士研究生,研究方向为氢同位素分离,liuyukun@mail.ustc.edu.cn