ZIF-67-based catalysts in persulfate advanced oxidation processes (PS-AOPs) for water remediation

Abstract

Zeolitic imidazolate framework-67 (ZIF-67), which consists of metal ions Co2+ and 2-methylimidazole ligand, is a kind of typical MOF material. As an emerging multifunctional material, ZIF-67-based materials have attracted increasing interest in the synthesis and applications due to their exceptionally high surface area, tunable porosity, and excellent thermal & chemical stability. In this paper, we focus on its developments in the field of persulfate advanced oxidation processes (PS-AOPs) for water purification. This review summarizes the latest enhanced strategies of ZIF-67-based catalysts for PS-AOPs, like the construction of immobilized ZIF-67, the functional group combination, metal ion doping, and calcination or sulfuration to produce corresponding derivatives. Finally, we attempt to provide the mechanistic insight for the applications of ZIF-67-based materials in organic wastewater treatment by PS-AOPs and to present the future direction for the application in PS-AOPs of ZIF-67-based materials.