کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6471044 1424110 2017 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation and characterization of a novel Ce doped PbO2 electrode based on NiO modified Ti/TiO2NTs substrate for the electrocatalytic degradation of phenol wastewater
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Preparation and characterization of a novel Ce doped PbO2 electrode based on NiO modified Ti/TiO2NTs substrate for the electrocatalytic degradation of phenol wastewater
چکیده انگلیسی


- A novel Ce doped PbO2 electrode based on NiO modified Ti/TiO2NTs substrate was prepared by two-step electrodeposition.
- The electrocatalytic activity and stability of electrodes were dramatically enhanced by NiO nanoparticles and Ce nanoparticles.
- High phenol and TOC removal efficiencies were achieved under optimized conditions.
- The novel Ti/TiO2NTs/NiO/Ce-PbO2 electrodes are promising anode material for pollutants degradation.

A novel of Ti/TiO2NTs/NiO/Ce-PbO2 electrode was constructed by electrodeposition technique. Characterization experiments including scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD), cyclic voltammetry (CV), linear sweep voltammetry (LSV) and electrochemical impedance spectroscopy (EIS) were performed to evaluate the performance of Ti/TiO2NTs/NiO/Ce-PbO2 electrode. The results show that, compared with the Ti/TiO2NTs/PbO2 and Ti/TiO2NTs/Ce-PbO2 electrode, the novel Ti/TiO2NTs/NiO/Ce-PbO2 electrode with more compact surface and a fine grain size possessed smaller charge transfer resistance and higher oxygen evolution potential. The Ti/TiO2NTs/NiO/Ce-PbO2 had higher electrochemical activity than those of other three kinds of electrodes due to the larger electrochemical active surface area. Phenol was employed as a model organic pollutant for electrochemical degradation to evaluate the electrocatalytic activity of the novel Ti/TiO2NTs/NiO/Ce-PbO2 electrode. The removal efficiency of phenol and TOC reached 100.0% and 98.1% respectively after 180 min under the optimal conditions. In addition, the degradation of phenol followed pseudo-first-order kinetics. The results demonstrated that the Ti/TiO2NTs/NiO/Ce-PbO2 with enhanced electrochemical performance is a promising material for degrading organic pollutants.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 247, 1 September 2017, Pages 535-547
نویسندگان
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