材料科学
海绵
吸附
过滤(数学)
化学工程
多孔介质
滤波器(信号处理)
阳离子聚合
饮用水净化
多孔性
复合材料
环境工程
有机化学
高分子化学
化学
植物
统计
数学
计算机科学
工程类
计算机视觉
生物
作者
Chenhui Ding,Yingying Du,Seema Agarwal
标识
DOI:10.1002/adfm.202309938
摘要
Abstract Constructing crystalline covalent organic frameworks (COF) robust 3D reusable macroscopic objects exposing more adsorption sites with high water flux for use as a filter is an unresolved challenge. A simple scalable procedure is shown for making a robust, highly compressible 3D crystalline COF nanowire interconnected porous open‐cell sponge. The compressive strength and Young's modulus (80% strain) of the sponge are 175 and 238 kPa, respectively. The sponge can withstand multiple compression‐release cycles and a load of 2800 times its weight without collapsing. As an exemplary application, the use of a COF sponge in the selective removal and separation of cationic model dye from a mixture of dyes in water by adsorption and filtration with >99% efficiency is shown. Depending on the dye concentration, the dye removal time can be as short as 2 min, and dye adsorption efficiency can be as high as 653 mg g −1 (COF in the sponge). During filtration, the sponges as filters show a high water flux of 2355 L h −1 m −2 under ambient conditions and maintain their performance for many cycles. The lightweight, reusability, and efficiency make present sponges sustainable materials as adsorbents and filters.
科研通智能强力驱动
Strongly Powered by AbleSci AI