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Go to Editorial ManagerIndustrial activities significantly affect the environment by releasing many organic pollutants, including industrial dyes, phenols and antibiotics, which produce wastewater. Effective removal of these substances from wastewater has appeared as a noticeable research field owing to its environmental significance. Exorbitant operational expenses and the potential generation of supplementary pollutants load conventional techniques like adsorption, membrane separation, and coagulation. Semiconductor-based photocatalysis has effectively degraded organic contaminants into less toxic or biodegradable compounds. The construction of robust visible-light-sensitive photocatalytic hybrids for environmental decontamination is an inspiring task for researchers. The exceptional photocatalytic performance of silver halides (AgX, where X is I, Cl, and Br) has recently attracted significant consideration as photocatalysts. Moreover, the combination of silver halides with other photo-active semiconductors to create efficient visible-light-driven photocatalyst heterojunctions has significantly promoted the broader application of the photocatalysis process with enhanced efficiency. Ag-silver halides/semiconductors heterojunctions have developed as crucial components in efficient composites for photocatalysis through surface plasmonic actions, helping with visible light absorption. The current study overviews the most recent Ag and silver halide-based composite photocatalysts. Additionally, it provides an essential understanding of their promoted photocatalytic performances and their main applications in organic pollutant degradation. Moreover, the photocatalytic mechanisms and environmental applications of AgI and composites were discussed.
Semiconductor photocatalytic technology has become an area of extensive research due to the extensive environmental contamination. Zeolitic imidazolate frameworks (ZIFs) are a distinct class of metal-organic frameworks that exhibit promise in the field of photocatalysis. This is attributed to their inherent porosity structure, versatile functionalities, rapid electron transfer rate, and excellent chemical-thermal stability are exhibited by this material. In addition, the photocatalytic performance of ZIFs and their derivatives can be greatly increased with the incorporation of active metals or semiconductor materials that act as light collecting centers or electronic mediators. Lately, there has been a growing focus on producing and utilizing materials under consideration are derived from the Co-zeolitic imidazolate framework (ZIF-67).), due to their remarkably great surface area, controllable pore diameter, and outstanding responsively to visible light. This article provides an exhaustive review of the use of ZIF-67-based heterojunctions in visible light-promoted photo-catalytic breakdown of organic dye contaminants. The review discusses and summarizes representative works, with particular emphasis given to the synergistic impacts and proposed mechanisms of the ZIF-67 composite photocatalysts in boosting photocatalysis process. Finally, the recent achievements and challenges in this discipline are discussed, and potential avenues for future investigation are suggested.