Vitamin B12 derived CoCNx composite confined in SBA-15 as highly effective catalyst to activate peroxymonosulfate for naproxen degradation

Hou, Jifei; Lin, Jingling; Fu, Heyun; Wan, Yuqiu; Qu, Xiaolei; Xu, Zhaoyi; Zheng, Shourong

doi:10.1016/j.cej.2020.124344

Cited by 36 publications

(3 citation statements)

References 80 publications

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“…ZIF‐67 (short as Z67) is a typical cobalt‐containing catalyst, but the rapid decomposition of Co‐promoted organic ligands during high‐temperature carbonation leads to the collapse of the ZIF structure and the sharp decrease of specific surface area, resulting in the aggregation of Co nanoparticles (NPs) and the reduction of catalytic activity 14 . Since then, great efforts have been made to improve the dispersion of Co NPs using various techniques such as porous material confinement, 15 oxide/carbon layer encapsulation, 16,17 and atomic layer deposition 18 . Here, the anchoring of heteroatoms (e.g., O, N, B, and P) have been found to effectively enhance the metal‐carrier interaction, while reducing the surface energy and migration of metal atoms 19,20 .…”

Section: Introductionmentioning

confidence: 99%

Highly active and selective ZIF‐derived cobalt catalyst for methanol conversion to dimethyl carbonate

Wang,

Meng,

Ding

et al. 2024

Applied Organom Chemis

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The oxidative carbonylation of methanol to synthesize dimethyl carbonate (DMC) has been extensively studied over Cu‐based catalysts, but the activity and selectivity are not high. The Co catalysts exhibit high DMC selectivity, but the difficulty in recycling homogeneous Co catalyst and the low conversion of heterogeneous Co catalyst limit the application of Co catalysts. Here, the core–shell ZIFs materials were synthesized and carbonized to obtain solid core–shell cobalt catalysts, and then the catalytic performance for methanol conversion to DMC was investigated. The CoNC@NC catalyst, carbonized from Z67@Z8 with Z67 as the core and Z8 as the shell, shows that the carbonized NC shell effectively suppressed the aggregation of Co NPs and the Co NPs were only 15.4 nm, which was much smaller than those of NC@CoNC (34.5 nm) and CoNC (48.1 nm) catalysts. Compared with the CoNC catalyst, CoNC@NC significantly improved the pulse chemisorption of CH3OH and CO, leading to a significant increase in methanol conversion from 6.9% to 17.1%. Furthermore, the deactivation rate of the CoNC@NC catalyst (22.8%) was much lower than that of CoNC (59.4%) after five reaction cycles. The results of this work provide a new strategy for the design and preparation of solid cobalt catalysts for the oxidative carbonylation of methanol to DMC.

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Section: Introductionmentioning

confidence: 99%

Highly active and selective ZIF‐derived cobalt catalyst for methanol conversion to dimethyl carbonate

Wang,

Meng,

Ding

et al. 2024

Applied Organom Chemis

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“…CNCbl was used in the synthesis of a cobalt-containing composite, which was employed in HSO 5 − activation. However, CNCbl was subjected to pyrolysis, which resulted in the destruction of its structure [ 20 ]. In this work, we report that the addition of H 2 OCbl accelerates the oxidation of azo-dye Orange II ( Figure 2 B) by HSO 5 − in aqueous solutions, and we provide the mechanistic details of this process.…”

Section: Introductionmentioning

confidence: 99%

Aquacobalamin Accelerates Orange II Destruction by Peroxymonosulfate via the Transient Formation of Secocorrinoid: A Mechanistic Study

Dereven’kov

Sakharova

Osokin

et al. 2022

IJMS

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Besides its use in medicine, vitamin B12 (cobalamin) and its derivatives have found in numerous applications as catalysts. However, studies related to the activation of oxidants via cobalamin are scant. In this work, we showed how the addition of aquacobalamin (H2OCbl) accelerates the destruction of azo-dye Orange II by peroxymonosulfate (HSO5−) in aqueous solutions. In neutral and weakly alkaline media, the process is initiated by the modification of the corrin macrocycle with HSO5−, which requires the preliminary deprotonation of the aqua-ligand in H2OCbl to give hydroxocobalamin, producing 5,6-dioxo-5,6-secocobalamin or its isomer (14,15-dioxo-14,15-secocobalamin). In acidic solutions, where the concentration of hydroxocobalamin is negligible, the formation of dioxo-seco-species is not observed, and the reaction between H2OCbl and HSO5− results in slow chromophore bleaching. Using terephthalic acid, we demonstrated the formation of hydroxyl radicals in the mixture of H2OCbl with HSO5-, whereas the generation of sulfate radicals was proved by comparing the effects of ethanol and nitrobenzene on Orange II destruction using the H2OCbl/HSO5− system. The reaction mechanism includes the binding of HSO5− to the Co(III) ion of dioxo-secocobalamin, which results in its deprotonation and the labilization of the O-O bond, leading to the formation of sulfate and hydroxyl radicals which further react with Orange II.

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“…3) 의약품은 생물 학적인 분해에 저항하기 위해 특별히 설계되었기 때문에, 이 들은 인체에서 구조를 충분히 오랫동안 유지할 수 있으며, 다 수가 그 구조를 유지한 체로 자연 환경으로 방출된다. 4) 의약 품은 병원, 생산 시설 및 부적절한 폐의약품 처리공정 등을 통해 배출되어 최근 수중 환경에서 매우 흔하게 발견된다. 5) 그리고 의약품은 ng/ml, μg/ml 정도의 극소량으로도 생명체에 악영향을 미칠 수 있으며, 표적으로 하는 특정 생물체의 물질 대사 경로 뿐만 아니라 간접적인 오염을 통해 표적이 아닌 생물체에도 영향을 미칠 수 있다.…”

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Adsorption-enhanced sonophotocatalytic removal of tetracycline from water using ceria-zirconia (x)CeO2-(1-x)ZrO2 binary oxide nanocatalyst

Kim¹,

Yea²,

Park³

et al. 2022

J Korean Soc Environ Eng

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Objectives : Tetracycline (TC) antibiotics have a risk of causing gastrointestinal and hepatic disorders and, in rare cases, photosensitivity and deposition in bone tissue.Methods : Therefore, it is urgent to develop a technology that can completely remove TC remaining in the water. In this study, a new type of sonophotocatalytic decomposition system that can efficiently decompose TC, a water-based recalcitrant trace pollutant, was proposed.Results and Discussion : As a sonophotocatalyst, xCeO2-(1-x)ZrO2 (x = 0, 0.25, 0.5, 0.75, and 1) binary nanocomposites were synthesized by hydrothermal methods, followed by X-ray diffraction, Fourier-transform infrared spectroscopy, field emission scanning electron microscope, UV-Vis diffuse reflectance spectroscopy, X-ray photoelectron spectroscopy, Brunauer-Emmett-Teller surface area techniques. Interestingly, the 0.75CeO2-0.25ZrO2 (CZ0.75) nanocomposite had low adsorption and removal ability of TC in the absence of light, but due to the synergistic effect of the material and the advanced treatment system, the remaining TC was removed by 89.2% under sonophoto irradiation for 60 min. For CZ0.75, the effect of operating factors such as initial pH of solution, catalyst dosage, reaction time, initial TC concentration, and ultrasonic intensity was studied and the mechanism was analyzed.Conclusion : In addition, through LC-MS analysis, intermediate products obtained in the TC degradation process using the CZ0.75 catalyst and the TC degradation pathway were identified.

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Vitamin B12 derived CoCNx composite confined in SBA-15 as highly effective catalyst to activate peroxymonosulfate for naproxen degradation

Cited by 36 publications

References 80 publications

Highly active and selective ZIF‐derived cobalt catalyst for methanol conversion to dimethyl carbonate

Highly active and selective ZIF‐derived cobalt catalyst for methanol conversion to dimethyl carbonate

Aquacobalamin Accelerates Orange II Destruction by Peroxymonosulfate via the Transient Formation of Secocorrinoid: A Mechanistic Study

Adsorption-enhanced sonophotocatalytic removal of tetracycline from water using ceria-zirconia (x)CeO2-(1-x)ZrO2 binary oxide nanocatalyst

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