Efficient activation of peroxymonosulfate by nanotubular Co3O4 for degradation of Acid Orange 7: performance and mechanism

Qin, Qingdong; Lü, Yan; Liu, Zheming; Liu, Yahong; Gu, Jia; Xu, Yan

doi:10.1007/s11356-022-19434-1

Cited by 9 publications

(1 citation statement)

References 67 publications

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“…19 In pursuit of cobalt-based catalysts with high activity towards PMS activation, much progress has been made in the design and fabrication of Co 3 O 4 with novel morphologies and microstructures. [20][21][22] However, we noted that most of the used catalysts were in the form of powder. Although they can be separated from the reaction solution after use by means of natural settlement, filtration, or centrifugation, the operation process is generally sophisticated and time-consuming, which thus inevitably restricts their further practical application.…”

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confidence: 99%

Fabrication of a Co₃O₄ monolithic membrane catalyst as an efficient PMS activator for the removal of methylene blue

et al. 2023

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Section: +mentioning

confidence: 99%

Fabrication of a Co₃O₄ monolithic membrane catalyst as an efficient PMS activator for the removal of methylene blue

et al. 2023

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Facile synthesis of NaA zeolite supported Co2Fe1 for highly efficient degradation of Acid Orange 7 by activation of peroxymonosulfate

Xu,

Liu,

Zhao

et al. 2023

Environ Sci Pollut Res

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The development of heterogeneous Co-based catalysts with an effective combination mode of Co/Fe and supporter, a facile synthetic method, and a low treatment costs is an important environment challenge for azo dyes degradation by peroxymonosulfate (PMS) activation. In this study, NaA zeolite supported Co x Fe y with various molar ratio of Fe/Si and Co/Fe was synthesized by a facile hydrothermal process, and used to activate PMS for Acid Orange 7 (AO7) degradation. NaA zeolite supported Co 2 Fe 1 with the Fe/Si molar ratio of 1:10 showed superior catalytic performance compared with other NaA zeolite supported Co x Fe y . In a system containing 0.6 g/L catalysts, 4 mM PMS, pH 5 and T = 30℃, 95.8% AO7 and 79.1% COD conversion could be achieved at 20 and 60 min, respectively, and the rst order kinetic rate constant reached 0.14795 min − 1 . Moreover, NaA zeolite supported Co 2 Fe 1 /PMS system exhibited excellent catalytic effect in a wide pH range of 3-9. Temperature had an obvious effect on AO7 degradation, and the activation energy was 31.36 kJ/mol. HCO 3 − demonstrated an obvious depression on AO7 degradation, while Cl − , SO 4 2− and H 2 PO 4 − had a relatively poor impact. Quenching experiments showed that both sulfate radicals (SO 4 •-) and hydroxyl radicals (•OH) were generated in the PMS reaction system, and the (SO 4 •-) was the dominant active radical. During 3 cycles experiments, an acceptable AO7 conversion ratio (91.8%) within 30 min was arrived, suggesting the good stability of NaA zeolite supported Co 2 Fe 1 .

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Efficient removal of organic pollutants by activation of peroxydisulfate with the magnetic CoFe2O4/carbon nanotube composite

Shi,

Zhang,

Song

et al. 2023

Environ Sci Pollut Res

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Efficient activation of peroxymonosulfate by nanotubular Co3O4 for degradation of Acid Orange 7: performance and mechanism

Cited by 9 publications

References 67 publications

Fabrication of a Co₃O₄ monolithic membrane catalyst as an efficient PMS activator for the removal of methylene blue

Fabrication of a Co₃O₄ monolithic membrane catalyst as an efficient PMS activator for the removal of methylene blue

Facile synthesis of NaA zeolite supported Co2Fe1 for highly efficient degradation of Acid Orange 7 by activation of peroxymonosulfate

Efficient removal of organic pollutants by activation of peroxydisulfate with the magnetic CoFe2O4/carbon nanotube composite

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Efficient activation of peroxymonosulfate by nanotubular Co3O4 for degradation of Acid Orange 7: performance and mechanism

Cited by 9 publications

References 67 publications

Fabrication of a Co3O4 monolithic membrane catalyst as an efficient PMS activator for the removal of methylene blue

Fabrication of a Co3O4 monolithic membrane catalyst as an efficient PMS activator for the removal of methylene blue

Facile synthesis of NaA zeolite supported Co2Fe1 for highly efficient degradation of Acid Orange 7 by activation of peroxymonosulfate

Efficient removal of organic pollutants by activation of peroxydisulfate with the magnetic CoFe2O4/carbon nanotube composite

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Fabrication of a Co₃O₄ monolithic membrane catalyst as an efficient PMS activator for the removal of methylene blue

Fabrication of a Co₃O₄ monolithic membrane catalyst as an efficient PMS activator for the removal of methylene blue