| FENG Qi,HE Fang,LIU De-rong,PAN Yue,YUAN Tao,XU Jing,XIONG Wei.Preparation and Electrocatalysis Performance of Composite RuO2-PPy Electrode[J],47(12):105-112 |
| Preparation and Electrocatalysis Performance of Composite RuO2-PPy Electrode |
| Received:April 19, 2018 Revised:December 20, 2018 |
| View Full Text View/Add Comment Download reader |
| DOI：10.16490/j.cnki.issn.1001-3660.2018.12.015 |
| KeyWord:SnO2-Sb2O3 RuO2-PPy doping active layer back row wastewater electrocatalytic activity |
| Author | Institution |
| FENG Qi |
Chongqing University of Science and Technology, Chongqing , China |
| HE Fang |
Chongqing University of Science and Technology, Chongqing , China |
| LIU De-rong |
Chongqing University of Science and Technology, Chongqing , China |
| PAN Yue |
Chongqing University of Science and Technology, Chongqing , China |
| YUAN Tao |
Chongqing University of Science and Technology, Chongqing , China |
| XU Jing |
Chongqing University of Science and Technology, Chongqing , China |
| XIONG Wei |
Chongqing University of Science and Technology, Chongqing , China |
|
| Hits: |
| Download times: |
| Abstract: |
| The works aims to introduce rare-earth element Er to modify the intermediate layer SnO2-Sb2O3 and improve the binding force between the substrate and the active layer. PPy (polypyrrole) is added to the active layer of RuO2 to enhance the electrocatalytic oxidation performance of the electrode. SnO2-Sb2O3-Er as intermediate layer and RuO2-PPy active layer were prepared by coating thermal decomposition and electrodeposition with Ti as the matrix. The effects of Er and C4H5N concentration on the crystal phase structure were investigated by X-ray diffraction (XRD) and the scanning electron microscope (SEM), energy spectrum analysis (EDS) and infrared light (FT-IR) were used to analyze the morphology, element composition and phase structure of the intermediate and active layers. The oxygen potential and stability of the electrodes were tested by linear polarization (LSV) and electrochemical impedance testing (EIS) and accelerated life test. The electrolytic technology of composite electrodes was used to treat the waste water from shale gas and the ability to degrade organic matter was investigated. When n(Sn4+):n(Er3+) = 100:4, the grain size of the coating was the smallest, and the surface crack of intermediate layer doped with Er decreased relative to the intermediate layer undoped with Er. Thus, the passivation of the electrode could be prevented further. The PPy could effectively modify the active layer. After PPy was added, the oxygen evolution potential of the composite RuO2 electrode could be increased from 1.6 V to 1.8 V, the electrode resistance was reduced from 56.2 Ω to 7.6 Ω, the life of the electrode was extended from 267 days to 391 days and the COD removal rate of reflow wastewater could reach 93.7%. The addition of Er and PPy can improve the electrocatalytic activity of the electrode, and the degradation effect of organic matter in the wastewater is remarkable. |
| Close |
|
|
|