Co-ZIF reinforced cow manure biochar (CMB) as an effective peroxymonosulfate activator for degradation of carbamazepine

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

“…Besides, Lei et al used cow manure biochar as a carrier to prepare Co nanoparticles on carbon at different pyrolysis temperatures, and they revealed that the crystallinity and graphite degree increased with the increase of temperature for enhanced catalytic properties. 123…”

“…Besides, Lei et al used cow manure biochar as a carrier to prepare Co nanoparticles on carbon at different pyrolysis temperatures, and they revealed that the crystallinity and graphite degree increased with the increase of temperature for enhanced catalytic properties. 123 Encapsulating metal species under carbon shells is an effective strategy to protect metal nanoparticles from Environmental Science: Nano Critical review leaching and endow carbon materials with magnetic properties. Li et al synthesized magnetic N-doped carbon (Co@N-C) derived from ZIF-67 by pyrolysis and acid washing (Fig.…”

Sulfate Radical-Based Degradation of Organic Pollutants: A Review on Application of Metal-Organic Frameworks as Catalysts

“…Persulfate (S 2 O 8 2– ) gets activated by cobalt nanoparticles and undergoes homolytic cleavage to form SO 4 •– radicals, which contribute heavily in the mineralization of doxycycline . With respect to biochar, the degradation rate is independent of pH, as it shows effective results at varying pH. , The temperature used during pyrolysis is critical in the preparation of the catalyst. Biochar prepared at high temperatures (700–1000 °C) provides more active sites by exhibiting higher crystallinity and a higher graphite degree. , The degradation mechanism was investigated using quenching studies, electron paramagnetic resonance (EPR) tests, and X-ray photoelectron spectroscopy (XPS) analyses, which revealed that the radical and nonradical routes teamed up leading to the oxidation reaction. , Biochar may act like electron mediator accepting e – from PMS (lattice oxygen) and may lead to free e – transfer in between ZIF-67 and biochar, later converting Co­(III) to Co­(II) …”

“…First, biochar is a low-cost and renewable resource that is widely available. This means that biochar-based MOFs can be produced at a lower cost, and they are typically synthesized from expensive metal–organic compounds and cost-effective raw waste like lotus leaf, cow manure, etc. ,, Second, biochar has a porous structure, which allows for the incorporation of metal ions to form MOFs. The porous structure of biochar provides a high surface area for the metal ions to attach, which enhances the catalytic activity of the MOFs .…”

Activation of peroxymonosulfate by cow manure biochar@1T-MoS2 for enhancing degradation of dimethyl phthalate: Performance and mechanism

“…Biochar is widely used in wastewater treatment due to its low cost, wide source and good adsorption properties (Pan et al, 2021;Chen et al, 2022). Previous studies have shown that biochar is effective in the removal of organic contaminants such as tetracycline and carbamazepine, (Guo et al, 2021;Lei et al, 2022;Su et al, 2022;Zhu et al, 2022), and has demonstrated good reusability and stability (Gan et al, 2019). In this study, we used cow dung as a raw material for biochar to prepare the catalyst CMB@1T-MoS 2 for AOPs by high temperature calcination and hydrothermal technique.…”