Efficient photocatalytic degradation of petroleum oil spills in seawater using a metal-organic framework (MOF)

Abstract

Photocatalysis is a green approach that has appeared to be a viable option for the degradation of a variety of organic contaminants. This work outlines the process of preparing the titanium-based metal-organic framework (MIL-125) photocatalysts using a simple solvothermal method. Structural, morphological, and optical analysis of samples (MT18 and MT48) was carried out by XRD, FT-IR, Raman, SEM, TGA, BET, and UV–Vis. Results indicated that the sample prepared at 150 °C and reaction time of 48 h (MT48) has a low crystal size of 7 nm with an optical band gap of 3.2 eV and a surface area of 301 m2 g−1. Under UV–visible light irradiation, the as-prepared MOFs proved to upgrade photocatalytic activity in degrading crude oil spills in saltwater. Effects of catalyst dosage and exposure time on the degradation of an oil spill in seawater were studied and analyzed using UV–Vis spectrophotometry and gas chromatography (GC–MS) which emphasized that the use of 250 ppm of MT48 photocatalyst under UV–Vis irradiation can degrade about 99% of oil spills in water after 2 h of exposure. The study's data revealed that MIL-125 could be used to photocatalyzed the cleanup of crude oil spills.

FeOOH Quantum Dot-Coupled Z-Scheme BiVO4/g-C3N4 Heterojunction for Enhancing Photo-Fenton Reactions

“…With the progress of science and technology, the rapid development of society also brings inevitable drawbacks. , The rapid development of industry and medicine has resulted in a higher standard of living, but at the same time, pollution has come along with it. − Large amounts of industrial wastewater and antibiotics are discharged, posing a significant environmental threat. − In recent years, removing dyes and antibiotics from wastewater has attracted more attention. − Therefore, there is an urgent need to find a photocatalyst with a broader range of adaptation and high efficiency. − …”

UiO-66 framework with an encapsulated spin probe: synthesis and exceptional sensitivity to mechanical pressure

“…The chemistry and applications of metal-organic frameworks (MOFs) have progressed significantly since their original inception more than two decades ago. [1][2][3][4][5][6][7] A huge amount of research has been focused on these compounds due to the virtually unlimited possibilities of adjusting their properties by changing the metal centres or organic linkers. [8][9][10][11][12][13][14] Variation of structures in MOFs allows obtaining compounds with different characteristics, such as average pore diameters, total pore volume and number of defects.…”