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Electrocatalytic degradation of perfluoroocatane sulfonate (PFOS) on a 3D graphene-lead dioxide (3DG-PbO2) composite anode: Electrode characterization, degradation mechanism and toxicity.
Chemosphere. 2020 Dec; 260:127587.C

Abstract

In this work, a three-dimension grapnene-PbO2 (3DG-PbO2) composite anode was prepared using coelectrodeposition technology for electrocatalytic oxidation of perfluorooctane sulfonate (PFOS). The effect of 3DG on the surface morphology, structure and electrocatalytic activity of PbO2 electrode was investigated. The results indicated that the 3DG-PbO2-0.08 anode (3DG concentration in electrodeposition solution was 0.08 g L-1) possessed the best electrocatalytic activity due to its stronger ·OH radicals generation capacity, more active sites and smaller charge-transfer resistance. The degradation rate constant of PFOS on 3DG-PbO2-0.08 anode was 2.33 times than that of pure PbO2 anode. Additionally, the by-products formed in electrocatalytic degradation of PFOS were identified and a PFOS degradation pathway was proposed accordingly, which was dominated by the dissociation of -CF2- groups via the attack of ·OH radicals. Finally, the toxicity evolution of degradation solution was examined to evaluate the ecological risk of electrocatalytic oxidation of PFOS by acute toxicity assays to zebrafish embryos.

Authors+Show Affiliations

Key Laboratory of Preparation and Applications of Environmental Friendly Materials (Jilin Normal University), Ministry of Education, Changchun, 130103, China; Key Laboratory of Environmental Materials and Pollution Control (Jilin Normal University), Education Department of Jilin Province, Siping, 136000, China. Electronic address: duanxiaoyue0511@163.com.Key Laboratory of Preparation and Applications of Environmental Friendly Materials (Jilin Normal University), Ministry of Education, Changchun, 130103, China.Key Laboratory of Environmental Materials and Pollution Control (Jilin Normal University), Education Department of Jilin Province, Siping, 136000, China.Key Laboratory of Environmental Materials and Pollution Control (Jilin Normal University), Education Department of Jilin Province, Siping, 136000, China.Key Laboratory of Environmental Materials and Pollution Control (Jilin Normal University), Education Department of Jilin Province, Siping, 136000, China.Key Laboratory of Preparation and Applications of Environmental Friendly Materials (Jilin Normal University), Ministry of Education, Changchun, 130103, China. Electronic address: changlimin2139@163.com.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32663673

Citation

Duan, Xiaoyue, et al. "Electrocatalytic Degradation of Perfluoroocatane Sulfonate (PFOS) On a 3D Graphene-lead Dioxide (3DG-PbO2) Composite Anode: Electrode Characterization, Degradation Mechanism and Toxicity." Chemosphere, vol. 260, 2020, p. 127587.
Duan X, Wang W, Wang Q, et al. Electrocatalytic degradation of perfluoroocatane sulfonate (PFOS) on a 3D graphene-lead dioxide (3DG-PbO2) composite anode: Electrode characterization, degradation mechanism and toxicity. Chemosphere. 2020;260:127587.
Duan, X., Wang, W., Wang, Q., Sui, X., Li, N., & Chang, L. (2020). Electrocatalytic degradation of perfluoroocatane sulfonate (PFOS) on a 3D graphene-lead dioxide (3DG-PbO2) composite anode: Electrode characterization, degradation mechanism and toxicity. Chemosphere, 260, 127587. https://doi.org/10.1016/j.chemosphere.2020.127587
Duan X, et al. Electrocatalytic Degradation of Perfluoroocatane Sulfonate (PFOS) On a 3D Graphene-lead Dioxide (3DG-PbO2) Composite Anode: Electrode Characterization, Degradation Mechanism and Toxicity. Chemosphere. 2020;260:127587. PubMed PMID: 32663673.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Electrocatalytic degradation of perfluoroocatane sulfonate (PFOS) on a 3D graphene-lead dioxide (3DG-PbO2) composite anode: Electrode characterization, degradation mechanism and toxicity. AU - Duan,Xiaoyue, AU - Wang,Weiyi, AU - Wang,Qian, AU - Sui,Xinyu, AU - Li,Na, AU - Chang,Limin, Y1 - 2020/07/09/ PY - 2020/03/28/received PY - 2020/06/04/revised PY - 2020/06/30/accepted PY - 2020/7/15/pubmed PY - 2020/10/21/medline PY - 2020/7/15/entrez KW - 3D graphene KW - Electrocatalytic oxidation KW - PbO2 anode KW - Perfluorooctane sulfonate KW - Toxicity SP - 127587 EP - 127587 JF - Chemosphere JO - Chemosphere VL - 260 N2 - In this work, a three-dimension grapnene-PbO2 (3DG-PbO2) composite anode was prepared using coelectrodeposition technology for electrocatalytic oxidation of perfluorooctane sulfonate (PFOS). The effect of 3DG on the surface morphology, structure and electrocatalytic activity of PbO2 electrode was investigated. The results indicated that the 3DG-PbO2-0.08 anode (3DG concentration in electrodeposition solution was 0.08 g L-1) possessed the best electrocatalytic activity due to its stronger ·OH radicals generation capacity, more active sites and smaller charge-transfer resistance. The degradation rate constant of PFOS on 3DG-PbO2-0.08 anode was 2.33 times than that of pure PbO2 anode. Additionally, the by-products formed in electrocatalytic degradation of PFOS were identified and a PFOS degradation pathway was proposed accordingly, which was dominated by the dissociation of -CF2- groups via the attack of ·OH radicals. Finally, the toxicity evolution of degradation solution was examined to evaluate the ecological risk of electrocatalytic oxidation of PFOS by acute toxicity assays to zebrafish embryos. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/32663673/Electrocatalytic_degradation_of_perfluoroocatane_sulfonate__PFOS__on_a_3D_graphene_lead_dioxide__3DG_PbO2__composite_anode:_Electrode_characterization_degradation_mechanism_and_toxicity_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(20)31782-3 DB - PRIME DP - Unbound Medicine ER -