还原氧化石墨烯/石墨相氮化碳复合膜的制备及其脱盐性能  

Preparation of Reduced Graphene Oxide/Graphitic Carbon Nitride Hybrid Membranes and Its Desalination Performance

作　　者：邢毓成 李镇江[2] 范晓彦[3] XING Yucheng;LI Zhenjiang;FAN Xiaoyan(College of Materials Science and Engineering;College of Sino-German Science and Technology;School ofMathematics and Physics, Qingdao University of Science and Technology, Qingdao 266042, China)

机构地区：[1]青岛科技大学材料科学与工程学院,山东青岛266042 [2]青岛科技大学中德科技学院,山东青岛266042 [3]青岛科技大学数理学院,山东青岛266042

出　　处：《青岛科技大学学报（自然科学版）》2019年第3期58-64,共7页Journal of Qingdao University of Science and Technology:Natural Science Edition

基　　金：国家自然科学基金资助项目(51672144);山东省高等学校科技计划资助项目(J16LA10)

摘　　要：采用真空抽滤法制备了以氧化石墨烯为基体的rGO/g-C_3N_4复合膜,系统研究了光催化还原时间、GO与g-C_3N_4质量比及GO沉积密度等工艺参数对复合膜脱盐性能的影响,优选出rGO/g-C_3N_4复合膜成膜工艺条件;并基于优选工艺所制备复合膜研究了NaCl溶液浓度对复合膜脱盐性能的影响,为复合膜的制备及应用提供实验依据。研究结果表明:紫外光照射时间为30h,GO与g-C_3N_4的质量比为6∶1,GO沉积密度为477.7mg·m^(-2)时制备的rGO/g-C_3N_4复合膜对NaCl溶液的脱盐性能最佳;复合膜对NaCl截留率和溶液通量均随NaCl溶液浓度降低而升高,对浓度为0.01mol·L^(-1)的NaCl溶液,截留率达到61.1%。rGO/g-C 3N 4byhrid membranes based on graphene oxide were prepared by the vacuum filtration in this work. The effects of photocatlytic reduction time, the mass ratio of GO to g-C 3N 4 and the deposition density of GO on the desalination performance of the hybrid membranes were studied and the optimized conditions of preparing rGO/g-C 3N 4membranes were confirmed. Based on the hybrid membranes prepared under the optimized conditions, the effect of NaCl concentration on the desalination performance of the hybrid membranes was investigated. This work provides experimental clues for the preparation and application of the hybrid membranes. The result indicates that NaCl desalination performance of rGO/g-C 3N 4 hybrid membrane is the best when the UV irradiation time is 30 h, mass ratio of GO tog-C 3N 4 is 6∶1, GO deposition density is 477.7 mg·m ^-2 . The rejection of NaCl and flux both decrease with the increase of the NaCl concentration and the rejection of NaCl (0.01 mol·L ^-1 ) reaches 61.1%.

关 键 词：氧化石墨烯 复合膜 光催化还原 脱盐性能 

分 类 号：TB334[一般工业技术—材料科学与工程]