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A promising electrode material modified by Nb-doped TiO2 nanotubes for electrochemical degradation of AR 73.
Chemosphere. 2017 Apr; 173:425-434.C

Abstract

A distinctive SnO2Sb electrode with highly ordered Nb doped TiO2 nanotubes sheet as a new substrate, obtained by NbTi alloy anodization, is prepared by pulse electrochemical deposition for the first time as electrocatalytic oxidation anode for wastewater treatment. The novel electrode has a larger surface area and smaller crystallite particles than conventional SnO2Sb electrodes as obtained from the analysis of scanning electron microscopy and X-ray diffraction. Compared with Ti/SnO2Sb and Ti/TiO2-NTs/SnO2Sb prepared by pulse electrochemical deposition, the electrode modified by NbTiO2-NTs has the higher oxygen evolution potential of 2.29 V (vs. Ag/AgCl), and the lower charge transfer resistance, which decreased by 65% and 79%. The service lifetime of NbTi/NbTiO2-NTs/SnO2Sb is 4.9 times longer than that of Ti/SnO2Sb and 1.9 times longer than that of Ti/TiO2-NTs/SnO2Sb. The new electrode is proved to have an excellent electrochemical oxidation and degradation ability using Acid Red 73 as a target organic pollutant. The AR 73 removal, chemical oxygen demand removal and kinetic rate constant are increased obviously due to the introduction of NbTiO2-NTs. Besides, the energy consumption reduces 37.2% and 31.4% in contrast with Ti/SnO2Sb and Ti/TiO2-NTs/SnO2Sb. Hence, the Ti/SnO2Sb modified by NbTiO2-NTs is a very promising anode material for the electrochemical treatment of dye wastewater.

Authors+Show Affiliations

School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China; Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin 300072, PR China. Electronic address: xuli620@163.com.School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China; Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin 300072, PR China.School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China; Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin 300072, PR China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

28129621

Citation

Xu, Li, et al. "A Promising Electrode Material Modified By Nb-doped TiO2 Nanotubes for Electrochemical Degradation of AR 73." Chemosphere, vol. 173, 2017, pp. 425-434.
Xu L, Liang G, Yin M. A promising electrode material modified by Nb-doped TiO2 nanotubes for electrochemical degradation of AR 73. Chemosphere. 2017;173:425-434.
Xu, L., Liang, G., & Yin, M. (2017). A promising electrode material modified by Nb-doped TiO2 nanotubes for electrochemical degradation of AR 73. Chemosphere, 173, 425-434. https://doi.org/10.1016/j.chemosphere.2017.01.077
Xu L, Liang G, Yin M. A Promising Electrode Material Modified By Nb-doped TiO2 Nanotubes for Electrochemical Degradation of AR 73. Chemosphere. 2017;173:425-434. PubMed PMID: 28129621.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - A promising electrode material modified by Nb-doped TiO2 nanotubes for electrochemical degradation of AR 73. AU - Xu,Li, AU - Liang,Gaorui, AU - Yin,Ming, Y1 - 2017/01/17/ PY - 2016/11/28/received PY - 2017/01/07/revised PY - 2017/01/13/accepted PY - 2017/1/28/pubmed PY - 2017/4/25/medline PY - 2017/1/28/entrez KW - Anode substrate KW - Electro-catalytic oxidation KW - Nb doping KW - Sb doped SnO(2) KW - Wastewater treatment SP - 425 EP - 434 JF - Chemosphere JO - Chemosphere VL - 173 N2 - A distinctive SnO2Sb electrode with highly ordered Nb doped TiO2 nanotubes sheet as a new substrate, obtained by NbTi alloy anodization, is prepared by pulse electrochemical deposition for the first time as electrocatalytic oxidation anode for wastewater treatment. The novel electrode has a larger surface area and smaller crystallite particles than conventional SnO2Sb electrodes as obtained from the analysis of scanning electron microscopy and X-ray diffraction. Compared with Ti/SnO2Sb and Ti/TiO2-NTs/SnO2Sb prepared by pulse electrochemical deposition, the electrode modified by NbTiO2-NTs has the higher oxygen evolution potential of 2.29 V (vs. Ag/AgCl), and the lower charge transfer resistance, which decreased by 65% and 79%. The service lifetime of NbTi/NbTiO2-NTs/SnO2Sb is 4.9 times longer than that of Ti/SnO2Sb and 1.9 times longer than that of Ti/TiO2-NTs/SnO2Sb. The new electrode is proved to have an excellent electrochemical oxidation and degradation ability using Acid Red 73 as a target organic pollutant. The AR 73 removal, chemical oxygen demand removal and kinetic rate constant are increased obviously due to the introduction of NbTiO2-NTs. Besides, the energy consumption reduces 37.2% and 31.4% in contrast with Ti/SnO2Sb and Ti/TiO2-NTs/SnO2Sb. Hence, the Ti/SnO2Sb modified by NbTiO2-NTs is a very promising anode material for the electrochemical treatment of dye wastewater. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/28129621/A_promising_electrode_material_modified_by_Nb_doped_TiO2_nanotubes_for_electrochemical_degradation_of_AR_73_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(17)30088-7 DB - PRIME DP - Unbound Medicine ER -