化工学报2019，Vol.70Issue(9)：3565-3572,8.DOI:10.11949/0438-1157.20190255
新型还原氧化石墨烯/氮化碳复合纳滤膜制备及其性能
Preparation and performance of novel rGO/uCN composite nanofiltration membrane
摘要
Abstract
High performance graphene-based composite membranes have attracted great attentions, however, graphene-based nanofiltration membranes usually exhibit low water flux in removing salt ions, which limits its application in water desalination. Novel reduced graphene oxide (rGO)/ultrathin carbon nitride (uCN) composite nanofiltration membrane was prepared by self-assembling rGO and nanoporous uCN nanosheets on polydopamine (PDA) modified polysulfone (PSF) support via vacuum filtration. Field emission scanning electron microscope (FESEM), transmission electron microscope (TEM), X-ray diffractometer (XRD), Fourier transform infrared spectra (FTIR) and X-ray photoelectron spectroscopy analysis (XPS) were applied to evaluate the changes in structure and morphology of membranes by introducing uCN. The effects of addition ratios of uCN, rGO content and operating pressure on the performance of composite membranes were also investigated. With 20 mg·L-1 uCN content in 100 mg·L-1 of rGO, the prepared rGO/uCN composite membrane not only maintained satisfied salt rejection rates (85.86% for Na2SO4, 30.17% for NaCl), but also possessed 2.15 times water permeance (88.50 L·m-2·h-1·MPa-1) that of pure rGO membrane.关键词
还原氧化石墨烯/氮化碳/复合膜/纳滤/脱盐Key words
reduced graphene oxide/ultrathin carbon nitride/composite membrane/nanofiltration/desalination分类
化学化工引用本文复制引用
徐颜军,徐泽海,孟琴,沈冲,侯蕊,张国亮..新型还原氧化石墨烯/氮化碳复合纳滤膜制备及其性能[J].化工学报,2019,70(9):3565-3572,8.基金项目
国家自然科学基金项目(21736009,21808202) （21736009,21808202）
