膜
纳米片
化学工程
插层(化学)
石墨氮化碳
水溶液
纳米材料
饮用水净化
金属有机骨架
化学
电子转移
材料科学
纳米技术
无机化学
催化作用
吸附
光催化
有机化学
生物化学
工程类
作者
Ziyue Wang,Jingyao Qi,Yumeng Zhao,Haicheng Jiang,Bo Han,Haiyang He,Mingrui He,Jun Ma
出处
期刊:Chemosphere
[Elsevier]
日期:2023-11-01
卷期号:340: 139937-139937
被引量:2
标识
DOI:10.1016/j.chemosphere.2023.139937
摘要
Versatile two-dimensional nanomaterials have offered a promising prospect to enhance the water purification efficiency and overcome the fouling obstacle in membrane technology. In this work, a graphitic carbon nitride (g-C3N4) nanosheet membrane intercalated with the nano-sized Fe-based metal-organic framework (MIL-100(Fe)) is developed for the enhanced removal of aqueous organic contaminants by synergically promoting separation and Fenton-like processes. The g-C3N4/MIL-100(Fe) membrane is constructed through a self-assembly route in which the nano-MIL-100(Fe) is anchored into g-C3N4 layers by the coordination bonds between Fe nodes and pyridinic N. The MIL-100(Fe) intercalation not only enlarges the interlayer spacing to raise the membrane permeability, but also expedites the electron transfer between Fe2+ and Fe3+ to improve the Fenton-like activity. With a stable water flux of 98.2 L m2·h−1·bar−1 under wide-range pH and pressures, the g-C3N4/MIL-100(Fe) membrane shows high dye removal efficiency (≥99%) and prominent self-cleaning ability. Mechanism insight proposes a combination of size exclusion, electrostatic interaction and steady radical generation. The intercalation of nano-MIL-100(Fe) into g-C3N4 membranes can realize the mutual promotion between separation and Fenton-like processes, the synergistic effect of which provides an effective and feasible strategy for aqueous pollution abatement.
科研通智能强力驱动
Strongly Powered by AbleSci AI