Fabrication of cerium doped Ti/nanoTiO2/PbO2 electrode with improved electrocatalytic activity and its application in organic degradation

Xu, Maotian; Wang, Zhicheng; Wang, Fengwu; Peng, Hong; Wang, Canyong; Ouyang, Xuemei; Zhu, Chen; Wei, Yijun; Hun, Yunhu; Fang, Wenyan

doi:10.1016/j.electacta.2016.03.168

Cited by 93 publications

(35 citation statements)

References 44 publications

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“…The reason why the current density was studied is that it is related to the generation of hydroxyl radicals. 36 As Figure 6g,h shows, the BPA removal efficiency increased with a current density, which could be explained by the fact that higher current density promoted the reaction of oxygen evolution. 37 Like the applied voltage, too high current density is not advisable for BPA degradation considering energy consumption.…”

Section: Acs Omegamentioning

confidence: 77%

Dimensional Stable Lead Electrode Modified by SDS for Efficient Degradation of Bisphenol A

et al. 2020

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The dimensional stable lead electrodes modified by sodium dodecyl sulfate (SDS) were prepared with electrochemical deposition and it shows that a more compact, uniform, and smooth film of Ti/PbO 2 (F+SDS) electrode reduces the corroded crystal faces and surface defects. Characterization results demonstrate that the oxygen evolution potential (OEP) of the Ti/PbO 2 (F+SDS) electrode was higher, and its service life is almost 1.6 times longer than the Ti/PbO 2 (F) electrode. Compared with Ti/PbO 2 (F) electrode, the soluble Pb concentration of the Ti/PbO 2 (F+SDS) electrode decreased 15.1%, which indicates that the decrease of crystal surface defects leads to the reduction of Pb ions so that the excellent corrosion resistance electrodes cause low environmental risks. The modified electrodes were used as anodes to degrading bisphenol A (BPA) when an electrolyte is 0.2 M Na 2 SO 4 , the applied voltage is 5 V and electrodes distance is 3 cm, 20 mg/L BPA for electrolysis time of 180 min can reach up to 97.6%.

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Section: Acs Omegamentioning

confidence: 77%

Dimensional Stable Lead Electrode Modified by SDS for Efficient Degradation of Bisphenol A

et al. 2020

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“…Electrochemical oxidation is one of the most eye-catching AOPs. It has the advantages of good treatment effect, small floor area, high degradation efficiency, short residence time and no secondary pollution, and has broad application prospects in the advanced treatment of salt compounds and organic compounds [9]. In the recent years, electrochemical oxidation technology has been increasingly studied for the treatment of chloride ion in wastewater [10].…”

Section: Introductionmentioning

confidence: 99%

A Novel Porous Ni, Ce-Doped PbO2 Electrode for Efficient Treatment of Chloride Ion in Wastewater

et al. 2020

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The porous Ti/Sb-SnO2/Ni-Ce-PbO2 electrode was prepared by using a porous Ti plate as a substrate, an Sb-doped SnO2 as an intermediate, and a PbO2 doped with Ni and Ce as an active layer. The surface morphology and crystal structure of the electrode were characterized by scanning electron microscope(SEM), energy dispersive spectrometer(EDS), and X-Ray diffraction(XRD). The electrochemical performance of the electrodes was tested by linear sweep voltammetry (LSV), cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and electrode life test. The results show that the novel porous Ni-Ce-PbO2 electrodes with larger active surface area have better electrochemical activity and longer electrode life than porous undoped PbO2 electrodes and flat Ni-Ce-PbO2 electrodes. In this work, the removal of Cl− in simulated wastewater on three electrodes was also studied. The results show that the removal effect of the porous Ni-Ce-PbO2 electrode is obviously better than the other two electrodes, and the removal rate is 87.4%, while the removal rates of the other two electrodes were 72.90% and 80.20%, respectively. In addition, the mechanism of electrochemical dechlorinating was also studied. With the progress of electrolysis, we find that the increase of OH- inhibits the degradation of Cl−, however, the porous Ni-Ce-PbO2 electrode can effectively improve the removal of Cl−.

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“…For example, TiNT/Sb-doped SnO 2 electrodes showed complete mineralisation and decolourisation for anodic oxidation of benzoic acid at 20 mA cm −2 [15]. Other nanomaterials, such as nano PbO 2/ TiO 2 and TiO 2 nanosheets, have been used for decolourisation and demineralisation of methyl orange and chloroethene [16,17]. Recent research has shown that the preparation of PbO 2 anodes decorated with TiO 2 nanotubes was found effective for the complete mineralisation and decolourisation of reactive blue-194 at a current density of 150 mA cm −2 [18].…”

Section: Introductionmentioning

confidence: 99%

Decolourisation of reactive black-5 at an RVC substrate decorated with PbO2/TiO2 nanosheets prepared by anodic electrodeposition

Zaidi

Harito

Walsh

et al. 2018

J Solid State Electrochem

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Reticulated vitreous carbon (RVC) substrates were coated with a composite of PbO 2 and titanate nanosheets (TiNS) by anodic electrophoretic depostion. The structure and morphological characteristics of the coating were evaluated by field emission scanning electron microscopy (FESEM) and Raman spectroscopy. The TiNS/PbO 2 /RVC coating contained the anatase phase and showed a well-defined, microporous morphology with hydrophilic character along the length and thickness of the RVC struts. Electrochemical and photocatalytic activity of the coatings facilitated RB-5 dye degradation as a model organic pollutant in wastewater. The electrochemical decolourisation involves the generation of hydroxyl free radicals over the TiNS/PbO 2 /RVC anode composite surface, whereas photocatalytic decolourisation was driven by the synergetic photocatalytic effect imparted by the photoinduced holes and free electron acceptors. The photocatalytic properties of the TiNS/PbO 2 coating were achieved by calcination at 450°C for 60 min in air which converted the titanate phase to anatase and modified its surface area. This enabled 98% electrochemical decolourisation of the RB-5 dye solution (measured by visible absorption at 597 nm) in a time of 60 min.Highlights • Stable TiNS/PbO 2 films on 100-ppi RVC were achieved by electrophoretic deposition.• SEM and Raman spectroscopy showed uniform layers of PbO 2 /TiNS. • PbO 2 /TiNS/RVC allowed 98% decolourisation of 100-mL RB-5 dye in 60 min.

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Fabrication of cerium doped Ti/nanoTiO2/PbO2 electrode with improved electrocatalytic activity and its application in organic degradation

Cited by 93 publications

References 44 publications

Dimensional Stable Lead Electrode Modified by SDS for Efficient Degradation of Bisphenol A

Dimensional Stable Lead Electrode Modified by SDS for Efficient Degradation of Bisphenol A

A Novel Porous Ni, Ce-Doped PbO2 Electrode for Efficient Treatment of Chloride Ion in Wastewater

Decolourisation of reactive black-5 at an RVC substrate decorated with PbO2/TiO2 nanosheets prepared by anodic electrodeposition

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