Bioinspired zeolitic imidazolate framework (ZIF-8) magnetic micromotors for highly efficient removal of organic pollutants from water
Bioinspired zeolitic imidazolate framework (ZIF-8) magnetic micromotors for highly efficient removal of organic pollutants from water
复制标题
仿生沸石咪唑骨架 (ZIF-8) 磁性微电机可高效去除水中的有机污染物
DOI：
10.1016/j.jcis.2019.07.059
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发表时间：
2019-11-01
影响因子：
9.9
通讯作者：
Liu, Yong
中科院分区：
文献类型：
--
作者：
Liu, Jun;Li, Jia;Liu, Yong
本文报告了使用基于生物启发的ZIF-8微电机进行有效水修复的第一个概念验证。天然木棉纤维具有独特的中空结构，含有纤维素和木质素，激发了气泡驱动管状微电机的设计和制造，作为一种主动自推进的微机械，用于去除水中的有机污染物。外部致密的ZIF-8层可以吸附微电机上的有机污染物，内部催化剂充当发动机分解燃料H2 O2以提供气泡推进。磁性γ-Fe 2 O3使微电机的外部磁控运动和恢复成为可能。基于ZIF-8的磁性微马达对刚果红和多西环素的最大吸附容量分别高达394和242 mg g（-1），这主要是由于它们的自主运动增强了微马达与污染物的接触以及由此产生的混合相关效应。这种新型的ZIF-8微电机在水溶液中也表现出了出色的稳定性和可重复使用性，表明它们在水处理领域具有巨大的应用潜力。(C)2019爱思唯尔公司All rights reserved.
This paper reports the first proof-of-concept of using bioinspired ZIF-8 based micromotors for efficient water remediation. Natural kapok fibers have unique hollow structure that contains cellulose and lignin, inspiring the design and fabrication of bubble-driving tubular micromotors as an active self-propelled micromachine for the removal of organic pollutants from water. The outer dense ZIF-8 layer can adsorb organic pollutants on the micromotors, and the inner catalyst acts as the engine decomposing fuel H2O2 for providing bubble propulsion. The magnetic gamma-Fe2O3 enables the external magnetic control movement and recovery of micromotors. The maximum adsorption capacity of ZIF-8-based magnetic micromotors toward Congo red and doxycycline were high as 394 and 242 mg g(-1), respectively, mainly due to the enhanced micromotor-pollutant contacts by their autonomous motion and the resulting mixing associated effect. This novel ZIF-8 micromotor also showed outstanding stability and reusability in aqueous solution, indicating that their great potential for future application in water treatment. (C) 2019 Elsevier Inc. All rights reserved.