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Fabrication of Co/Pr co-doped Ti/PbO2 anode for efficiently electrocatalytic degradation of β-naphthoxyacetic acid.
Chemosphere. 2020 Oct; 256:127139.C

Abstract

The existence of β-naphthoxyacetic acid (BNOA) pesticide in water system has aroused serious environmental problem because of its potential toxicity for humans and organisms. Therefore, exploiting an efficient method without secondary pollution is extremely urgent. Herein, a promising Ti/PbO2-Co-Pr composite electrode has been successfully fabricated through simple one-step electrodeposition for efficiently electrocatalytic degradation of BNOA. Compared with Ti/PbO2, Ti/PbO2-Co and Ti/PbO2-Pr electrodes, Ti/PbO2-Co-Pr electrode with smaller pyramidal particles possesses higher oxygen evolution potential, excellent electrochemical stability and outstanding electrocatalytic activity. The optimal degradation condition is assessed by major parameters including temperature, initial pH, current density and Na2SO4 concentration. The degradation efficiency and chemical oxygen demand removal efficiency of BNOA reach up to 94.6% and 84.6%, respectively, under optimal condition (temperature 35 °C, initial pH 5, current density 12 mA cm-2, Na2SO4 concentration 8.0 g L-1 and electrolysis time 3 h). Furthermore, Ti/PbO2-Co-Pr electrode presents economic energy consumption and superior repeatability. Finally, the possible degradation mechanism of BNOA is put forward according to the main intermediate products identified by liquid chromatography-mass spectrometer. The present research paves a new path to degrade BNOA pesticide wastewater with Ti/PbO2-Co-Pr electrode.

Authors+Show Affiliations

State Key Laboratory of Environment-friendly Energy Materials, School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, PR China.State Key Laboratory of Environment-friendly Energy Materials, School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, PR China.State Key Laboratory of Environment-friendly Energy Materials, School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, PR China.State Key Laboratory of Environment-friendly Energy Materials, School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, PR China.State Key Laboratory of Environment-friendly Energy Materials, School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, PR China.State Key Laboratory of Environment-friendly Energy Materials, School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, PR China.State Key Laboratory of Environment-friendly Energy Materials, School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, PR China.State Key Laboratory of Environment-friendly Energy Materials, School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, PR China; International Science and Technology Cooperation Laboratory of Micro-nanoparticle Application Research, Southwest University of Science and Technology, Mianyang, 621010, PR China. Electronic address: heping@swust.edu.cn.International Science and Technology Cooperation Laboratory of Micro-nanoparticle Application Research, Southwest University of Science and Technology, Mianyang, 621010, PR China; Department of Chemical and Biochemical Engineering, Western University, London, Ontario, N6A 5B9, Canada.International Science and Technology Cooperation Laboratory of Micro-nanoparticle Application Research, Southwest University of Science and Technology, Mianyang, 621010, PR China; Key Laboratory of Shock and Vibration of Engineering Materials and Structures of Sichuan Province, Southwest University of Science and Technology, Mianyang, 621010, PR China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32470737

Citation

Chen, Shouxian, et al. "Fabrication of Co/Pr Co-doped Ti/PbO2 Anode for Efficiently Electrocatalytic Degradation of Β-naphthoxyacetic Acid." Chemosphere, vol. 256, 2020, p. 127139.
Chen S, Li J, Liu L, et al. Fabrication of Co/Pr co-doped Ti/PbO2 anode for efficiently electrocatalytic degradation of β-naphthoxyacetic acid. Chemosphere. 2020;256:127139.
Chen, S., Li, J., Liu, L., He, Q., Zhou, L., Yang, T., Wang, X., He, P., Zhang, H., & Jia, B. (2020). Fabrication of Co/Pr co-doped Ti/PbO2 anode for efficiently electrocatalytic degradation of β-naphthoxyacetic acid. Chemosphere, 256, 127139. https://doi.org/10.1016/j.chemosphere.2020.127139
Chen S, et al. Fabrication of Co/Pr Co-doped Ti/PbO2 Anode for Efficiently Electrocatalytic Degradation of Β-naphthoxyacetic Acid. Chemosphere. 2020;256:127139. PubMed PMID: 32470737.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Fabrication of Co/Pr co-doped Ti/PbO2 anode for efficiently electrocatalytic degradation of β-naphthoxyacetic acid. AU - Chen,Shouxian, AU - Li,Jing, AU - Liu,Liya, AU - He,Qihang, AU - Zhou,Lianhong, AU - Yang,Tiantian, AU - Wang,Xuejiao, AU - He,Ping, AU - Zhang,Hui, AU - Jia,Bin, Y1 - 2020/05/23/ PY - 2020/03/19/received PY - 2020/05/18/revised PY - 2020/05/18/accepted PY - 2020/5/30/pubmed PY - 2020/7/28/medline PY - 2020/5/30/entrez KW - Degradation mechanism KW - Electrocatalytic degradation KW - Parameter optimization KW - Ti/PbO(2)–Co-Pr electrode KW - β-naphthoxyacetic acid SP - 127139 EP - 127139 JF - Chemosphere JO - Chemosphere VL - 256 N2 - The existence of β-naphthoxyacetic acid (BNOA) pesticide in water system has aroused serious environmental problem because of its potential toxicity for humans and organisms. Therefore, exploiting an efficient method without secondary pollution is extremely urgent. Herein, a promising Ti/PbO2-Co-Pr composite electrode has been successfully fabricated through simple one-step electrodeposition for efficiently electrocatalytic degradation of BNOA. Compared with Ti/PbO2, Ti/PbO2-Co and Ti/PbO2-Pr electrodes, Ti/PbO2-Co-Pr electrode with smaller pyramidal particles possesses higher oxygen evolution potential, excellent electrochemical stability and outstanding electrocatalytic activity. The optimal degradation condition is assessed by major parameters including temperature, initial pH, current density and Na2SO4 concentration. The degradation efficiency and chemical oxygen demand removal efficiency of BNOA reach up to 94.6% and 84.6%, respectively, under optimal condition (temperature 35 °C, initial pH 5, current density 12 mA cm-2, Na2SO4 concentration 8.0 g L-1 and electrolysis time 3 h). Furthermore, Ti/PbO2-Co-Pr electrode presents economic energy consumption and superior repeatability. Finally, the possible degradation mechanism of BNOA is put forward according to the main intermediate products identified by liquid chromatography-mass spectrometer. The present research paves a new path to degrade BNOA pesticide wastewater with Ti/PbO2-Co-Pr electrode. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/32470737/Fabrication_of_Co/Pr_co_doped_Ti/PbO2_anode_for_efficiently_electrocatalytic_degradation_of_β_naphthoxyacetic_acid_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(20)31332-1 DB - PRIME DP - Unbound Medicine ER -