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Iron-doped ordered mesoporous Co3O4 activation of peroxymonosulfate for ciprofloxacin degradation: Performance, mechanism and degradation pathway.
Sci Total Environ. 2019 Mar 25; 658:343-356.ST

Abstract

Ordered mesoporous Co3O4 (OM-Co3O4) displayed superior performance for peroxymonosulfate (PMS) activation. While, the separation and recovery of the catalyst after catalytic oxidation needed tedious operation. In this study, the as-synthesized iron-doped OM-Co3O4 not only inherited the merits of ordered mesoporous materials such as high surface area and abundant mesoporous structure, but endowed them with ferromagnetism, facilitating their separation from the solution. Compared with spinel Co3O4, iron-doped OM-Co3O4 showed superior catalytic activity, wide application scope, excellent reusability and long-term stability, fully validated that iron-doped OM-Co3O4 can be a promising heterogeneous PMS activator for environmental application. High catalyst loading and PMS concentration were both beneficial to CIP degradation. The best CIP degradation occurred under base conditions. Chlorine and bicarbonate presented completely opposite two-side effects. The mechanism of CIP degradation was primarily attributed to SO4- and OH to a lesser extent. The rapid redox cycles of M2+/M3+ (M = Co, Fe) and O2-/O2 ensured the continuous generation of reactive oxygen species and the efficient degradation of CIP. The cleavage of piperazine ring, hydroxylation and defluorination were identified as the main oxidation pathways for CIP degradation in iron-doped OM-Co3O4 activated PMS system.

Authors+Show Affiliations

College of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou 310014, China; Brook Byers Institute for Sustainable Systems, School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332, United States. Electronic address: zjut_djing@163.com.College of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou 310014, China.College of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou 310014, China.College of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou 310014, China.School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China.College of Environment, Zhejiang University of Technology, Hangzhou 310014, China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30579192

Citation

Deng, Jing, et al. "Iron-doped Ordered Mesoporous Co3O4 Activation of Peroxymonosulfate for Ciprofloxacin Degradation: Performance, Mechanism and Degradation Pathway." The Science of the Total Environment, vol. 658, 2019, pp. 343-356.
Deng J, Xu M, Feng S, et al. Iron-doped ordered mesoporous Co3O4 activation of peroxymonosulfate for ciprofloxacin degradation: Performance, mechanism and degradation pathway. Sci Total Environ. 2019;658:343-356.
Deng, J., Xu, M., Feng, S., Qiu, C., Li, X., & Li, J. (2019). Iron-doped ordered mesoporous Co3O4 activation of peroxymonosulfate for ciprofloxacin degradation: Performance, mechanism and degradation pathway. The Science of the Total Environment, 658, 343-356. https://doi.org/10.1016/j.scitotenv.2018.12.187
Deng J, et al. Iron-doped Ordered Mesoporous Co3O4 Activation of Peroxymonosulfate for Ciprofloxacin Degradation: Performance, Mechanism and Degradation Pathway. Sci Total Environ. 2019 Mar 25;658:343-356. PubMed PMID: 30579192.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Iron-doped ordered mesoporous Co3O4 activation of peroxymonosulfate for ciprofloxacin degradation: Performance, mechanism and degradation pathway. AU - Deng,Jing, AU - Xu,Mengyuan, AU - Feng,Shanfang, AU - Qiu,Chungen, AU - Li,Xueyan, AU - Li,Jun, Y1 - 2018/12/14/ PY - 2018/10/03/received PY - 2018/11/21/revised PY - 2018/12/12/accepted PY - 2018/12/24/pubmed PY - 2019/2/13/medline PY - 2018/12/23/entrez KW - Ciprofloxacin KW - Degradation KW - Iron-doped ordered mesoporous Co(3)O(4) KW - Peroxymonosulfate KW - Reactive oxygen species SP - 343 EP - 356 JF - The Science of the total environment JO - Sci. Total Environ. VL - 658 N2 - Ordered mesoporous Co3O4 (OM-Co3O4) displayed superior performance for peroxymonosulfate (PMS) activation. While, the separation and recovery of the catalyst after catalytic oxidation needed tedious operation. In this study, the as-synthesized iron-doped OM-Co3O4 not only inherited the merits of ordered mesoporous materials such as high surface area and abundant mesoporous structure, but endowed them with ferromagnetism, facilitating their separation from the solution. Compared with spinel Co3O4, iron-doped OM-Co3O4 showed superior catalytic activity, wide application scope, excellent reusability and long-term stability, fully validated that iron-doped OM-Co3O4 can be a promising heterogeneous PMS activator for environmental application. High catalyst loading and PMS concentration were both beneficial to CIP degradation. The best CIP degradation occurred under base conditions. Chlorine and bicarbonate presented completely opposite two-side effects. The mechanism of CIP degradation was primarily attributed to SO4- and OH to a lesser extent. The rapid redox cycles of M2+/M3+ (M = Co, Fe) and O2-/O2 ensured the continuous generation of reactive oxygen species and the efficient degradation of CIP. The cleavage of piperazine ring, hydroxylation and defluorination were identified as the main oxidation pathways for CIP degradation in iron-doped OM-Co3O4 activated PMS system. SN - 1879-1026 UR - https://www.unboundmedicine.com/medline/citation/30579192/Iron_doped_ordered_mesoporous_Co3O4_activation_of_peroxymonosulfate_for_ciprofloxacin_degradation:_Performance_mechanism_and_degradation_pathway_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0048-9697(18)35049-6 DB - PRIME DP - Unbound Medicine ER -