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Electrocatalytic oxidation of PCP-Na by a novel nano-PbO2 anode: degradation mechanism and toxicity assessment.
Environ Sci Pollut Res Int. 2020 Dec; 27(35):43656-43669.ES

Abstract

This study aims at investigating the electrocatalytic oxidation of sodium pentachlorophenate (PCP-Na) using a novel nano-PbO2 powder anode. The nano-PbO2 powder (marked as HL-PbO2) was prepared by a simple hydrolysis process, and hydrothermal treatment was followed to improve the activity of HL-PbO2. The HL-PbO2 treated for 24 h by hydrothermal process (HL/HT-PbO2-24) was confirmed to possess higher crystallinity, higher oxygen evolution potential, and more active sites, resulting in stronger OH radical generation capacity and higher electrochemical activity. Compared with conventional electrodeposited PbO2 (ED-PbO2) anode, the HL/HT-PbO2-24 anode showed higher PCP-Na degradation rate. Under the same operating conditions, the mineralization current efficiency at HL/HT-PbO2-24 was 2.7 times than that at ED-PbO2. Five intermediates were detected in PCP-Na degradation solution and possible degradation mechanism of PCP-Na was discussed. In addition, the acute toxicity of PCP-Na degradation solution to zebrafish embryos and the oxidative stress induced in zebrafish embryos/larvae were studied to evaluate the ecological security of electrocatalytic oxidation of PCP-Na.

Authors+Show Affiliations

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

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32737782

Citation

Duan, Xiaoyue, et al. "Electrocatalytic Oxidation of PCP-Na By a Novel nano-PbO2 Anode: Degradation Mechanism and Toxicity Assessment." Environmental Science and Pollution Research International, vol. 27, no. 35, 2020, pp. 43656-43669.
Duan X, Sui X, Wang Q, et al. Electrocatalytic oxidation of PCP-Na by a novel nano-PbO2 anode: degradation mechanism and toxicity assessment. Environ Sci Pollut Res Int. 2020;27(35):43656-43669.
Duan, X., Sui, X., Wang, Q., Wang, W., Li, N., & Chang, L. (2020). Electrocatalytic oxidation of PCP-Na by a novel nano-PbO2 anode: degradation mechanism and toxicity assessment. Environmental Science and Pollution Research International, 27(35), 43656-43669. https://doi.org/10.1007/s11356-020-10289-y
Duan X, et al. Electrocatalytic Oxidation of PCP-Na By a Novel nano-PbO2 Anode: Degradation Mechanism and Toxicity Assessment. Environ Sci Pollut Res Int. 2020;27(35):43656-43669. PubMed PMID: 32737782.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Electrocatalytic oxidation of PCP-Na by a novel nano-PbO2 anode: degradation mechanism and toxicity assessment. AU - Duan,Xiaoyue, AU - Sui,Xinyu, AU - Wang,Qian, AU - Wang,Weiyi, AU - Li,Na, AU - Chang,Limin, Y1 - 2020/07/31/ PY - 2020/05/01/received PY - 2020/07/27/accepted PY - 2020/8/2/pubmed PY - 2020/11/26/medline PY - 2020/8/2/entrez KW - Electrocatalytic oxidation KW - Hydrolysis KW - PCP-Na KW - PbO2 KW - Toxicity SP - 43656 EP - 43669 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 27 IS - 35 N2 - This study aims at investigating the electrocatalytic oxidation of sodium pentachlorophenate (PCP-Na) using a novel nano-PbO2 powder anode. The nano-PbO2 powder (marked as HL-PbO2) was prepared by a simple hydrolysis process, and hydrothermal treatment was followed to improve the activity of HL-PbO2. The HL-PbO2 treated for 24 h by hydrothermal process (HL/HT-PbO2-24) was confirmed to possess higher crystallinity, higher oxygen evolution potential, and more active sites, resulting in stronger OH radical generation capacity and higher electrochemical activity. Compared with conventional electrodeposited PbO2 (ED-PbO2) anode, the HL/HT-PbO2-24 anode showed higher PCP-Na degradation rate. Under the same operating conditions, the mineralization current efficiency at HL/HT-PbO2-24 was 2.7 times than that at ED-PbO2. Five intermediates were detected in PCP-Na degradation solution and possible degradation mechanism of PCP-Na was discussed. In addition, the acute toxicity of PCP-Na degradation solution to zebrafish embryos and the oxidative stress induced in zebrafish embryos/larvae were studied to evaluate the ecological security of electrocatalytic oxidation of PCP-Na. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/32737782/Electrocatalytic_oxidation_of_PCP_Na_by_a_novel_nano_PbO2_anode:_degradation_mechanism_and_toxicity_assessment_ L2 - https://dx.doi.org/10.1007/s11356-020-10289-y DB - PRIME DP - Unbound Medicine ER -