Your browser doesn't support javascript.
loading
Electrocatalytic oxidation of PCP-Na by a novel nano-PbO2 anode: degradation mechanism and toxicity assessment.
Duan, Xiaoyue; Sui, Xinyu; Wang, Qian; Wang, Weiyi; Li, Na; Chang, Limin.
Afiliação
  • Duan X; Key Laboratory of Environmental Materials and Pollution Control (Jilin Normal University), Education Department of Jilin Province, Siping, 136000, China. duanxiaoyue0511@163.com.
  • Sui X; Key Laboratory of Preparation and Applications of Environmental Friendly Materials (Jilin Normal University), Ministry of Education, Changchun, 130103, China. duanxiaoyue0511@163.com.
  • Wang Q; Key Laboratory of Environmental Materials and Pollution Control (Jilin Normal University), Education Department of Jilin Province, Siping, 136000, China.
  • Wang W; Key Laboratory of Environmental Materials and Pollution Control (Jilin Normal University), Education Department of Jilin Province, Siping, 136000, China.
  • Li N; Key Laboratory of Preparation and Applications of Environmental Friendly Materials (Jilin Normal University), Ministry of Education, Changchun, 130103, China.
  • Chang L; Key Laboratory of Environmental Materials and Pollution Control (Jilin Normal University), Education Department of Jilin Province, Siping, 136000, China.
Environ Sci Pollut Res Int ; 27(35): 43656-43669, 2020 Dec.
Article em En | MEDLINE | ID: mdl-32737782
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.
Assuntos
Palavras-chave

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Óxidos / Poluentes Químicos da Água Limite: Animals Idioma: En Ano de publicação: 2020 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Óxidos / Poluentes Químicos da Água Limite: Animals Idioma: En Ano de publicação: 2020 Tipo de documento: Article