MOF‐Derived Ni/ZIF‐8/ZnO Arrays on Carbon Fiber Cloth for Efficient Adsorption‐Catalytic Oxidation

• Published in: Small (Weinheim an der Bergstrasse, Germany) Vol. 19; no. 50; pp. e2303928 - n/a
• Main Authors: Wang, Yue, Ge, Yu, Wang, Ruoding, Liu, Zifan, Yin, Zhonglong, Yang, Zhen, Liu, Fuqiang, Yang, Weiben
• Format: Journal Article
• Language: English
• Published: Germany Wiley Subscription Services, Inc 01.12.2023
• Subjects: Adsorption; Adsorptivity; Arrays; Bisphenol A; Carbon fibers; Catalytic oxidation; Cloth; Confined spaces; Degradation; nanoreactors; Nanorods; Nanotechnology; organic pollutants; Oxidation; peroxymonosulfate; Pollutants; Zinc oxide; bisphenol A; catalytic oxidation; organic pollutants; nanoreactors; peroxymonosulfate
• ISSN: 1613-6810; 1613-6829
• DOI: 10.1002/smll.202303928

The catalytic oxidation of toxic organic pollutants in water requires enhanced efficiency for commercial applications. A ZnO nanorod array grown on a carbon fiber cloth (CFC) serves as the zinc source to ensure that the Ni/ZIF‐8/ZnO nanoreactor is constructed. The Ni/ZIF‐8/ZnO/CFC nanoreactor efficiently activates peroxymonosulfate (PMS) for bisphenol A (BPA) degradation owing to its high density of active sites, high adsorbability, and dispersibility structure, which concentrates catalytic and adsorptive sites within a confined space. Experimental and theoretical calculations clearly show that the introduction of Ni is beneficial for improving the adsorption of BPA and the activation of PMS. The synergistic mechanism of BPA adsorption–PMS activation is also investigated, and the degradation pathway of BPA is examined. Moreover, a filter catalytic unit is constructed using Ni/ZIF‐8/ZnO/CFC to achieve a continuous zero discharge of BPA, which is convenient for nanocatalyst recycling. This study aims to develop a new strategy for the removal of emerging organic pollutants from water using a system with strong adsorption and catalytic capabilities. The novel Ni/ZIF‐8/ZnO nanoreactor array is grown on carbon fiber cloth (CFC). The efficient activated peroxymonosulfate (PMS) performance of Ni/ZIF‐8/ZnO/CFC results from the high density of active sites, high adsorbability, and dispersibility structure, which concentrates catalytic and adsorptive sites within a confined space.