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Electrocatalytic degradation of methylene blue on PbO2-ZrO2 nanocomposite electrodes prepared by pulse electrodeposition.
J Hazard Mater. 2013 Dec 15; 263 Pt 2:726-34.JH

Abstract

PbO2-ZrO2 nanocomposite electrodes (P) were prepared by pulse electrodeposition and used for the electrocatalytic degradation of methylene blue (MB). The SEM and XRD tests show that PbO2-ZrO2 nanocomposite electrodes (P) possess more compact structure and finer grain size than PbO2-ZrO2 nanocomposite electrodes (D) prepared by direct electrodeposition. The electrochemical measurements show that PbO2-ZrO2 nanocomposite electrodes (P) have higher oxygen evolution overpotential and the oxidation regions of MB and water are significantly separated. The experimental parameters on electrocatalytic degradation of MB by PbO2-ZrO2 nanocomposite electrodes (P) were evaluated, such as initial MB concentration, current density, pH value and supporting electrolyte concentration. The results indicate that MB and COD removal efficiency of PbO2-ZrO2 nanocomposite electrodes (P) reach 100% and 72.7%, respectively, after 120 min electrolysis at initial 30 mg L(-1) MB concentration at current density of 50 mA cm(-2) in 0.2 mol L(-1) Na2SO4 supporting electrolyte solution, and the degradation of MB follows pseudo-first-order kinetics. Compared with PbO2-ZrO2 nanocomposite electrodes (D), PbO2-ZrO2 nanocomposite electrodes (P) show higher COD removal efficiency and instantaneous current efficiency with MB degradation. The experimental results demonstrate that PbO2-ZrO2 nanocomposite electrodes (P) possesses the excellent electrocatalytic properties and show great potential applications in refractory pollutants.

Authors+Show Affiliations

Hebei University of Technology, School of Chemical Engineering and Technology, Electrochemical Surface Technology Research Laboratory, Tianjin 300130, China. Electronic address: yaoyingwu@hebut.edu.cn.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

24220200

Citation

Yao, Yingwu, et al. "Electrocatalytic Degradation of Methylene Blue On PbO2-ZrO2 Nanocomposite Electrodes Prepared By Pulse Electrodeposition." Journal of Hazardous Materials, vol. 263 Pt 2, 2013, pp. 726-34.
Yao Y, Zhao C, Zhao M, et al. Electrocatalytic degradation of methylene blue on PbO2-ZrO2 nanocomposite electrodes prepared by pulse electrodeposition. J Hazard Mater. 2013;263 Pt 2:726-34.
Yao, Y., Zhao, C., Zhao, M., & Wang, X. (2013). Electrocatalytic degradation of methylene blue on PbO2-ZrO2 nanocomposite electrodes prepared by pulse electrodeposition. Journal of Hazardous Materials, 263 Pt 2, 726-34. https://doi.org/10.1016/j.jhazmat.2013.10.038
Yao Y, et al. Electrocatalytic Degradation of Methylene Blue On PbO2-ZrO2 Nanocomposite Electrodes Prepared By Pulse Electrodeposition. J Hazard Mater. 2013 Dec 15;263 Pt 2:726-34. PubMed PMID: 24220200.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Electrocatalytic degradation of methylene blue on PbO2-ZrO2 nanocomposite electrodes prepared by pulse electrodeposition. AU - Yao,Yingwu, AU - Zhao,Chunmei, AU - Zhao,Manman, AU - Wang,Xiao, Y1 - 2013/10/26/ PY - 2013/09/16/received PY - 2013/10/15/revised PY - 2013/10/18/accepted PY - 2013/11/14/entrez PY - 2013/11/14/pubmed PY - 2014/8/15/medline KW - Electrocatalytic degradation KW - Electrochemical property KW - Methylene blue KW - PbO(2)-ZrO(2) nanocomposite electrode KW - Pulse electrodeposition SP - 726 EP - 34 JF - Journal of hazardous materials JO - J. Hazard. Mater. VL - 263 Pt 2 N2 - PbO2-ZrO2 nanocomposite electrodes (P) were prepared by pulse electrodeposition and used for the electrocatalytic degradation of methylene blue (MB). The SEM and XRD tests show that PbO2-ZrO2 nanocomposite electrodes (P) possess more compact structure and finer grain size than PbO2-ZrO2 nanocomposite electrodes (D) prepared by direct electrodeposition. The electrochemical measurements show that PbO2-ZrO2 nanocomposite electrodes (P) have higher oxygen evolution overpotential and the oxidation regions of MB and water are significantly separated. The experimental parameters on electrocatalytic degradation of MB by PbO2-ZrO2 nanocomposite electrodes (P) were evaluated, such as initial MB concentration, current density, pH value and supporting electrolyte concentration. The results indicate that MB and COD removal efficiency of PbO2-ZrO2 nanocomposite electrodes (P) reach 100% and 72.7%, respectively, after 120 min electrolysis at initial 30 mg L(-1) MB concentration at current density of 50 mA cm(-2) in 0.2 mol L(-1) Na2SO4 supporting electrolyte solution, and the degradation of MB follows pseudo-first-order kinetics. Compared with PbO2-ZrO2 nanocomposite electrodes (D), PbO2-ZrO2 nanocomposite electrodes (P) show higher COD removal efficiency and instantaneous current efficiency with MB degradation. The experimental results demonstrate that PbO2-ZrO2 nanocomposite electrodes (P) possesses the excellent electrocatalytic properties and show great potential applications in refractory pollutants. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/24220200/Electrocatalytic_degradation_of_methylene_blue_on_PbO2_ZrO2_nanocomposite_electrodes_prepared_by_pulse_electrodeposition_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(13)00780-2 DB - PRIME DP - Unbound Medicine ER -