Degradation of organic contaminants by peroxymonosulfate activated with zeolitic imidazolate framework-based catalysts: performances, mechanisms and stability

Abstract

For the past few years, the sulfate radical-based advanced oxidation processes (SR-AOPs) have been developed rapidly due to their unique advantages for the degradation of organic contaminants. Zeolitic imidazolate frameworks...

Modular preparation of functional bimetallic spinels from metal–organic frameworks: a deep exploration from macro and micro perspectives

“…6–8 However, the performance of some functional materials is constantly approaching their limiting value and is still insufficient to meet the needs. 9,10 To address this challenge, it is necessary to further explore and commercialize functional materials that can meet performance requirements, 11–13 thus solving environmental pollution and energy crises to a certain extent. 14–16…”

Unveiling the mechanism of visible light-assisted peroxymonosulfate activation and carbamazepine degradation using NH2-MIL-125(Ti)@MIL-53(Fe/Co) heterojunction photocatalyst

“…In this case, most of these problems can be overcome through different post-synthetic modification techniques, such as tuning the structure of the chromophore, formation of heterojunction composites, and doping of metal and non-metallic elements. [39][40][41][42][43][44] Among them, the formation of heterojunction composites is an effective method, where different semiconductors are introduced in the MOF structure to improve their photo-responsive properties, structural integrity and overall electronic conductivity. 45,46 Also, the growth of another MOF on a base MOF crystal is a unique way to prepare heterojunction composites, which can act as efficient photocatalysts with the minimum loss of porosity and uniform distribution of active sites.…”

CdS Nanoparticles Supported on a Dual Metal–Organic Framework as a Catalyst for the Photodegradation of Tetracycline

“…To increase its surface area and active sites, CdS crystals with nanometer size can be prepared, which would require a carrier for dispersion to prevent agglomeration of CdS and rapid recombination of the electron–hole pairs in the photocatalytic process . These problems limit its further application in the field of photocatalysis. , Metal–organic frameworks (MOFs) are a class of porous crystalline materials with high porosity, large specific surface area, abundant active centers, and adjustable composition and structure, showing great potential in the field of semiconductor photocatalysis. − Among them, MIL-101­(Fe) is synthesized by a self-assembly reaction of Fe precursor and benzene-1,4-dicarboxylic acid as an organic connector, with 2.3–2.7 nm average pore size . It has been identified as a visible light-responsive reductive photocatalyst with good catalytic performance for degrading organic pollutants. , However, due to its relatively large band gap width compared to semiconductor materials, its photoactivity is limited by low conductivity, easily recombined electron–hole pairs, and low energy conversion efficiency .…”