环境工程学报2024，Vol.18Issue(3)：676-685,10.DOI:10.12030/j.cjee.202310147
一种新型可见光响应催化剂改性PATFC膜的制备及其抗污染性能
Preparation of a modified PATFC membrane coated with a novel visible light response catalyst and its anti-pollution properties
摘要
Abstract
In this study,AgI,graphene oxide(GO)and ultra-thin g-C3N4(UCN)were used as precursors,a type of visible light responsive AgI@GO@UCN(AGU)photocatalyst was synthesized through ultrasonic and chemical precipitation.Then,nitrogen press filtration combined with interfacial polymerization was used to load AGU on the surface of supporting polyamide membrane(PATFC),and AGU modified PATFC membrane was obtained.The preparation process conditions and anti-pollution properties of the modified membrane were studied.The results showed that the optimum preparation conditions were as follows:AGU dosage of 30 mg,MPD aqueous solution mass fraction of 1.0‰,MPD soaking time of 2 min,TMC organic phase solution mass fraction of 0.25‰,TMC soaking time of 45 s;Under the optimal preparation conditions,the pure water flux was 21.84 L·(m2·h)-1(suction pressure 0.2 MPa),and the retention rate of Congo red(CR)could reach 97.80％.The hydrophilicity was significantly improved,and the water contact angle decreased from 57.1°(PATFC)to 40.7°(AGU).The visible light absorption performance of the modified film increased significantly,and the red shift of its maximum absorption side band occurred from 387 nm to 488 nm.The modified membrane had a good anti-pollution performance,and its specific flux increased to 92.75％from 69.54％of PATFC membrane.The modified film had good photocatalytic self-cleaning properties,and the flux recovery rate could reach 95.83％after 60 min illumination.The modified film had a high stability,and its flux recovery rate could reach 92.35％and CR retention rate was still 97.29％after recycling for 6 times.关键词
AgI@GO@UCN可见光催化剂/PATFC膜/抗污染性能/光催化自清洁特性Key words
visible light responsive AgI@GO@UCN(AGU)photocatalyst/polyamide thin-film composite membrane/anti-pollution performance/photocatalytic self-cleansing properties分类
资源环境引用本文复制引用
李冬梅,吴汉杰,刘小勇,蒋树贤,陈璟恺,林廷翰,张刚毅,陈彦冰..一种新型可见光响应催化剂改性PATFC膜的制备及其抗污染性能[J].环境工程学报,2024,18(3):676-685,10.基金项目
国家自然科学面上基金资助项目(51378129 （）
51108094) （）
