采用绿色工艺制备石墨烯（GR），以聚多巴胺（PDA）为黏合剂、混合纤维素滤膜（MCE）为基体，借助真空辅助抽滤法制备二氧化钛/石墨烯/多巴胺复合膜（TP-G/MCE）。研究了不同质量分数GR的TP-G的性能，考察了丙酮熏蒸透明化膜的柔韧性及对负载牢固度的影响等。结果表明，经丙酮蒸气渗透后，白色多孔的MCE膜变成透明TP-G膜，具有优异的柔韧性与负载牢固性。与TiO₂相比，TP-G发生了明显红移，TP-8.0% G膜的光催化降解甲基橙的降解率为81.84%，经过3次光催化降解循环后降解率为80%。

Graphene (GR) is prepared via a clean process, and titanium dioxide/graphene/dopamine composite membrane (TP-G/MCE) are prepared through vacuum-assisted filtration by using polydopamine (PDA) as binder and mixed cellulose filter membrane (MCE) as the substrate.The properties of TP-G membranes with different GR fractions are investigated, such as the flexibility of acetone fumigated transparent membranes (TP-G) and the effect on the loading firmness.It is shown that after being fumigated by acetone vapor, the white and porous MCE membranes change into transparent TP-G film, with excellent flexibility and load solidity.Compared with TiO₂, TP-G has a significant red shift.The photocatalytic degradation rate of methyl orange by TP-8.0%G film is 81.84%, which is 80% after the film has been used for three cycles, presenting good degradation efficiency and repeatability.

侯笑笑(1996-),女,硕士研究生,研究方向为光催化技术、光催化降解VOCs,380440859@qq.com