Effect of metal ions on optical properties of metal-organic frameworks

Recently, environmental pollution and resource depletion, caused mainly by the rapid development of industries, put human life and the ecosystem in danger. Therefore, advanced material as a photocatalyst has been synthesized both in academia and industry to overcome these challenges. Various types of photocatalysts have been introduced; however, within the past decade, metal-organic frameworks (MOFs) have attracted incredible attention to satisfy these challenges due to their organic components used for light-harvesting and acting as a charge carrier reservoir or as a co-catalyst. In this paper, MIL-۸۸B with three different metal ions (Fe۳+, Al۳+, Zn۲+) were successfully synthesized by using a solvothermal method with the same conditions. The optical properties of each MOF have been investigated. It was shown that the spectrum of MIL-۸۸B (Fe) displayed a better absorption band even in the visible portion, which can result in the generation of electron-hole pairs to enhance the photocatalytic activities. This study suggests a strategy for the preparation of environmentally stable MOF as photocatalysts to eliminate various pollutants efficiently.

کلیدواژه ها:

Metal Organic Frameworks (MOFs) ، MIL-۸۸B ، Photocatalysis ، Solvothermal