Heterogeneous activation of peroxymonosulfate using ordered mesoporous Co 3 O 4 for the degradation of chloramphenicol at neutral pH

Deng, Jing; Feng, Shanfang; Zhang, Kejia; Li, Jun; Wang, Hong Yu; Zhang, Tuqiao; Ma, Xiaoyan

doi:10.1016/j.cej.2016.09.075

Cited by 338 publications

(61 citation statements)

References 54 publications

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“…Different catalytic systems were firstly compared over TC removal in aqueous solution (Figure ). Both 400‐BMOs and Co 3 O 4 could activate PMS to produce SO 4 − • for degradation of organic contaminants . Noticeably, the developed 5 wt% Co‐BMOs combined with PMS showed satisfactory activity with nearly 100% TC removal in 25 minutes, which was higher than the prepared 400‐BMOs and Co 3 O 4 .…”

Section: Resultssupporting

confidence: 87%

Cobalt‐doped biogenic manganese oxides for enhanced tetracycline degradation by activation of peroxymonosulfate

Luo

Xie

Niu

et al. 2018

J of Chemical Tech & Biotech

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BACKGROUND: Tetracycline (TC) residues in water and soil have received wide attention due to their adverse effects on human health and ecosystem. Layer-structured biogenic manganese oxides (BMOs) could be obtained from fungi Pleosporales sp. Y-5 culture. Cobalt doping into BMOs (Co-BMOs) was conducted by a facile impregnation-calcination method to eliminate TC residues through activation of peroxymonosulfate (PMS). RESULTS: TheTC in aqueous solution could be nearly completely removed in about 10 minutes under the optimal condition ([TC] = 50 mg L −1 , [catalyst] = 0.2 g L −1 , [PMS] = 0.4 g L −1 , 25 ∘ C). The electron paramagnetic resonance (EPR) identified the coexistence of SO 4 − • and OH• during PMS activation. The Co-BMOs catalyst remained great catalytic activity after five runs. Possible mechanism of PMS activation and TC degradation pathway were proposed. Preliminary biological toxicity test using green algae Chlorella vulgaris (FACHB-8) as ecological indicator confirmed that TC degradation solution was less toxic than the original solution. CONCLUSION: This study demonstrated high catalytic activity and stability of Co-BMOs for degradation of TC by PMS activation. The Co-BMOs/PMS system is helpful in new efforts for TC degradation without generation of more toxic intermediates. Industry 0.4 g L −1 PMS followed by adjustment of pH to 7.0. Then the Chlorella vulgaris was treated with 50 mL fresh TC solution and degraded solution, respectively. Cultures were incubated on an orbital shaker (180 rpm, 30 ∘ C) for 120 hours. The concentration J Chem Technol Biotechnol 2019; 94: 752-760

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Section: Resultssupporting

confidence: 87%

Cobalt‐doped biogenic manganese oxides for enhanced tetracycline degradation by activation of peroxymonosulfate

Luo

Xie

Niu

et al. 2018

J of Chemical Tech & Biotech

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“…Phenol can act as an effective scavenger for both SO 4 − · and ·OH, while TBA only react with ·OH at significant rate (Deng et al 2017). It can be observed from Fig.…”

Section: Catalytic Activitymentioning

confidence: 90%

“…By comparing with the data before and after reaction, the relative surface content of O ads increased from 32.65 to 38.56% and the relative surface content of Olatt decreased from 67.35 to 61.44%. The enhancement of O ads content may be attributed to the formation of Co-OH or the adsorption of O 2 on the catalyst surface, which was considered as the main factor for the outstanding performance of cobalt-based catalyst in PMS solution (Deng et al 2017).…”

Section: Plausible Catalytic Mechanismmentioning

confidence: 99%

“…b, 2016). SO 4 − · can be formed via activation of persulfate (PS) or peroxymonosulfate (PMS) with transition metal, ultraviolet, heat, ultrasound, anions, and base Deng et al 2013c); Deng et al 2017;Furman et al 2010;Lou et al 2014;Wang et al 2016). It is reported that PMS can be activated more easily than PS due to its shorter bond length of O-O (Anipsitakis et al 2004).…”

Section: Introductionmentioning

confidence: 95%

“…It is reported that PMS can be activated more easily than PS due to its shorter bond length of O-O (Anipsitakis et al 2004). Up to now, cobalt ion coupled with PMS has been recognized as the most effective way (Deng et al 2017). In view of the toxicity of cobalt ion and complexity of the recovery, magnetic catalysts have become a research hotspot.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of magnetic CoFe2O4/ordered mesoporous carbon nanocomposites and application in Fenton-like oxidation of rhodamine B

Deng

Chen

Lü

et al. 2017

Environ Sci Pollut Res

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CoFeO/ordered mesoporous carbon (OMC) nanocomposites were synthesized and tested as heterogeneous peroxymonosulfate (PMS) activator for the removal of rhodamine B. Characterization confirmed that CoFeO nanoparticles were tightly bonded to OMC, and the hybrid catalyst possessed high surface area, pore volume, and superparamagnetism. Oxidation experiments demonstrated that CoFeO/OMC nanocomposites displayed favorable catalytic activity in PMS solution and rhodamine B degradation could be well described by pseudo-first-order kinetic model. Sulfate radicals (SO·) were verified as the primary reactive species which was responsible for the decomposition of rhodamine B. The optimum loading ratio of CoFeO and OMC was determined to be 5:1. Under optimum operational condition (catalyst dosage 0.05 g/L, PMS concentration 1.5 mM, pH 7.0, and 25 °C), CoFeO/OMC-activated peroxymonosulfate system could achieve almost complete decolorization of 100 mg/L rhodamine B within 60 min. The enhanced catalytic activity of CoFeO/OMC nanocomposites compared to that of CoFeO nanoparticles could be attributable to the increased adsorption capacity and accelerated redox cycles between Co(III)/Co(II) and Fe(III)/Fe(II).

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Boosting Peroxymonosulfate Activation via CoS/MXene Nanocomposite for Rhodamine B Degradation under Simulated Sunlight Irradiation

Wu,

Zhao,

Wang

et al. 2023

Chemistry An Asian Journal

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Cobalt‐based heterogeneous catalysts have been demonstrated as an effective PMS activator for pollutant degradation. However, the limited active sites on their surface lead to an unsatisfactory catalytic efficiency. Immobilizing the catalysts on the support material can be a promising modification strategy to solve this problem. MXene has been considered as an ideal support material due to its unique morphology and physicochemical properties. Therefore, in this work, the CoS‐loaded Ti3C2 MXene (CoS/Ti3C2 MXene) catalyst for peroxymonosulfate (PMS) activation was successfully synthesized through a solvothermal method. Under the simulated sunlight irradiation, the CoS/Ti3C2 MXene+PMS system achieved an impressive efficiency in removing the organic pollutant rhodamine B (97.2 % in 10 min). Among the tested catalysts, 30 %‐CoS‐TC stood out, exhibited a broad pH tolerance from 5 to 9 and maintained robust degradation performance over cycles. Upon detailed analysis, the degradation mechanism revealed the collaborative action dominated by singlet oxygen, and supplemented by photogenerated holes and superoxide radicals in the process. Notably, the sandwich‐like structure of MXene played a pivotal role, not only dispersing the CoS particles evenly on the surface of catalysts, but also providing ample space for the active sites, thus accelerating the PMS activation for the degradation of rhodamine B. Overall, this study developed an innovative MXene‐based catalyst for the application of environmental remediation.

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Heterogeneous activation of peroxymonosulfate using ordered mesoporous Co 3 O 4 for the degradation of chloramphenicol at neutral pH

Cited by 338 publications

References 54 publications

Cobalt‐doped biogenic manganese oxides for enhanced tetracycline degradation by activation of peroxymonosulfate

Cobalt‐doped biogenic manganese oxides for enhanced tetracycline degradation by activation of peroxymonosulfate

Synthesis of magnetic CoFe2O4/ordered mesoporous carbon nanocomposites and application in Fenton-like oxidation of rhodamine B

Boosting Peroxymonosulfate Activation via CoS/MXene Nanocomposite for Rhodamine B Degradation under Simulated Sunlight Irradiation

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