Preparation and dry-rejection properties of HKUST-1 composite ceramic nanofiltration membrane by in-situ growth method

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摘要:

采用原位生长法在商品化陶瓷微孔膜基底依次涂覆γ-Al2O3和介孔二氧化硅层,通过使HKUST-1在介孔硅表面可控结晶,制备了一种HKUST-1复合陶瓷纳滤膜,并对其形貌和结构进行了表征.通过对反应温度、前驱体溶液物质配比、反应时间、前驱体溶液浓度进行优化,研究了复合陶瓷纳滤膜对小分子有机染料去除性能的影响.以牛血清蛋白(BSA)为模型污染物,对复合陶瓷纳滤膜的抗污染性能进行了评价.结果表明,0.34 mol·L-1Cu(NO3)2与0.14 mol·L-1 H3BTC在100℃下反应12 h,制备的复合陶瓷纳滤膜对亚甲基蓝、甲基橙、铬黑T、罗丹明B、酸性品红、刚果红的去除率为20%~99%,通量为17.2~39.8 L·m-2·h-1.复合陶瓷纳滤膜的通量恢复率为61.8%,通量下降率为60%,表现出较好的抗污染性能.

γ-Al2O3 and mesoporous silica layer were coating on the substrate of commercial ceramic membrane with micropore in sequence.With in situ growth method,a composite ceramic nanofiltration membrane was prepared through the controlled crystallization of HKUST-1 based on the interaction between the surface silanol group and metal center.The microstructure and morphology of the prepared ceramic membrane were characterized.The influence factors affecting the performance were optimized,including reaction temperature,molar ratio of precursor reaction solution,reaction time and concentration of precursor reaction solution.Under the optimized condition,the prepared ceramic membrane was applied for the removal of small molecular dyes.The anti-pollution performance was evaluated using bovine serum protein as the model contaminant.The result reveals that the optimal condition was Cu(NO3)20.34 mol·L-1,H3BTC 0.14 mol·L-1,100℃,and reaction time 12 h.The result indicates that the rejection rate of methylene blue,methyl orange,mordant black T,rhodamine B,acid magenta,and congo red ranged from 20%to 99%.The pure water flux ranged from 17.2 to 39.8 L·m-2·h-1.The flux recovery rate of the prepared ceramic membrane was 61.8%and the flux decline rate was 60%,showing good anti-fouling performance.

作者:

庞龙张彦彦刘惠美黄子玲金宝丹曹霞

Pang Long;Zhang Yanyan;Liu Huimei;Huang Ziling;Jin Baodan;Cao Xia(College of Materials and Chemical Engineering,Zhengzhou University of Light Industry,Zhengzhou 450002,China)

机构地区:

郑州轻工业大学材料与化学工程学院

出处:

《betway官方app 学报：自然科学版》 CAS 北大核心 2023年第1期97-105,I0003,共10页

Journal of Henan Normal University(Natural Science Edition)

基金:

河南省科技攻关计划项目(202102210025).

关键词:

HKUST-1 陶瓷纳滤膜染料分离性能

HKUST-1 ceramic nanofiltration membrane dyes separation performance

分类号:

O413 [理学—理论物理]