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Mechanism of N,N-dimethylformamide electrochemical oxidation using a Ti/RuO(2)–IrO(2) electrode

The compound N,N-dimethylformamide (DMF) is a widely used industrial chemical and a common environmental contaminant that has been found to be harmful to human health. In this study, electrochemical oxidation was adopted for the degradation of DMF. The effects of four kinds of electrodes on the remo...

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Detalles Bibliográficos
Autores principales: Hu, Xuyang, Dong, Hao, Zhang, Yinghao, Fang, Baihui, Jiang, Wenqiang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8694957/
https://www.ncbi.nlm.nih.gov/pubmed/35423280
http://dx.doi.org/10.1039/d0ra10181h
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author Hu, Xuyang
Dong, Hao
Zhang, Yinghao
Fang, Baihui
Jiang, Wenqiang
author_facet Hu, Xuyang
Dong, Hao
Zhang, Yinghao
Fang, Baihui
Jiang, Wenqiang
author_sort Hu, Xuyang
collection PubMed
description The compound N,N-dimethylformamide (DMF) is a widely used industrial chemical and a common environmental contaminant that has been found to be harmful to human health. In this study, electrochemical oxidation was adopted for the degradation of DMF. The effects of four kinds of electrodes on the removal rates of DMF and total organic carbon were compared, and based on the result, the Ti/RuO(2)–IrO(2) electrode was selected as the operating electrode. The effects of three independent factors (current density, pH, and NaCl proportion) on the DMF degradation were investigated through single-factor experiments, and the experimental results were optimized by response surface methodology. The optimal experimental conditions were obtained as follows: current density = 47 mA cm(−2), pH = 5.5, and NaCl proportion = 15%. The electrochemical oxidation of 50 mg L(−1) DMF was performed under the optimal conditions; the degradation rate was 97.2% after 7 h, and the reaction followed the pseudo-first-order kinetic model. The degradation products under optimal conditions and chlorine-free conditions were analyzed, and four degradation pathways were proposed. The DMF degradation was more thorough under optimal conditions.
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spelling pubmed-86949572022-04-13 Mechanism of N,N-dimethylformamide electrochemical oxidation using a Ti/RuO(2)–IrO(2) electrode Hu, Xuyang Dong, Hao Zhang, Yinghao Fang, Baihui Jiang, Wenqiang RSC Adv Chemistry The compound N,N-dimethylformamide (DMF) is a widely used industrial chemical and a common environmental contaminant that has been found to be harmful to human health. In this study, electrochemical oxidation was adopted for the degradation of DMF. The effects of four kinds of electrodes on the removal rates of DMF and total organic carbon were compared, and based on the result, the Ti/RuO(2)–IrO(2) electrode was selected as the operating electrode. The effects of three independent factors (current density, pH, and NaCl proportion) on the DMF degradation were investigated through single-factor experiments, and the experimental results were optimized by response surface methodology. The optimal experimental conditions were obtained as follows: current density = 47 mA cm(−2), pH = 5.5, and NaCl proportion = 15%. The electrochemical oxidation of 50 mg L(−1) DMF was performed under the optimal conditions; the degradation rate was 97.2% after 7 h, and the reaction followed the pseudo-first-order kinetic model. The degradation products under optimal conditions and chlorine-free conditions were analyzed, and four degradation pathways were proposed. The DMF degradation was more thorough under optimal conditions. The Royal Society of Chemistry 2021-02-11 /pmc/articles/PMC8694957/ /pubmed/35423280 http://dx.doi.org/10.1039/d0ra10181h Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Hu, Xuyang
Dong, Hao
Zhang, Yinghao
Fang, Baihui
Jiang, Wenqiang
Mechanism of N,N-dimethylformamide electrochemical oxidation using a Ti/RuO(2)–IrO(2) electrode
title Mechanism of N,N-dimethylformamide electrochemical oxidation using a Ti/RuO(2)–IrO(2) electrode
title_full Mechanism of N,N-dimethylformamide electrochemical oxidation using a Ti/RuO(2)–IrO(2) electrode
title_fullStr Mechanism of N,N-dimethylformamide electrochemical oxidation using a Ti/RuO(2)–IrO(2) electrode
title_full_unstemmed Mechanism of N,N-dimethylformamide electrochemical oxidation using a Ti/RuO(2)–IrO(2) electrode
title_short Mechanism of N,N-dimethylformamide electrochemical oxidation using a Ti/RuO(2)–IrO(2) electrode
title_sort mechanism of n,n-dimethylformamide electrochemical oxidation using a ti/ruo(2)–iro(2) electrode
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8694957/
https://www.ncbi.nlm.nih.gov/pubmed/35423280
http://dx.doi.org/10.1039/d0ra10181h
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