Zeolitic imidazolate frameworks (ZIF-8 & ZIF-67): Synthesis and application for wastewater treatment

Abstract

Taking appropriate measures for waste-water treatment is important in order to respect everyone’s fundamental right to clean and safe water on Earth. Current review encapsulates the newest approaches of fabricating Zeolitic imidazolate frameworks (ZIFs)-based nanocomposites for wastewater treatment. (ZIFs) are a typical type of porous materials with zeolitic topology that syndicate the benefits of zeolite and traditional metal–organic frameworks (MOFs). In recent years, much attention has been devoted to the fabrication and application of ZIFs-based nanocomposites due to their outstanding chemical and thermal stabilities, tunable porosity and considerably high surface area. Furthermore, coalescing the benefits of ZIFs with other materials and compounds which have better results than that of pristine and pure ZIFs. The exceptional properties of ZIFs endue its outstanding adsorption capability and virtuous host aptitude for materials used as photocatalysis, which makes it be a prestigious materials in the decontamination of polluted water. The current research development of ZIFs (ZIF-8 and ZIF-67) nano-composites as photocatalysts and adsorbents for the exclusion of contaminants from water is critically reviewed. Various factors which affect its performance and mechanism of action are also debated. This review endeavors to lay the systematic awareness for the application of ZIFs (ZIF-8 and ZIF-67) nano-composite in real industrial wastewater treatment and delivers new ideas for fabricating highly competent ZIFs based photocatalysts and adsorbent materials. For the purpose of enlightening the whole capability of ZIFs based nanocomposites in wastewater treatment recycling water, current challenges are presented and future research possibilities are anticipated at the end.