Electrochemical oxidation of triclosan using Ti/TiO2 NTs/Al–PbO2 electrode: reaction mechanism and toxicity evaluation

2021 ◽  
Author(s):  
Yu Mei ◽  
Jun Chen ◽  
Hua Pan ◽  
Feilin Hao ◽  
Jiachao Yao
Keyword(s):  
Reaction Mechanism ◽  
Electrochemical Oxidation ◽  
Electrode Reaction ◽  
Toxicity Evaluation ◽  
Pbo2 Electrode ◽  
Tio2 Nts

scholarly journals A comparison of electrochemical oxidation performance of PbO2 and SnO2 electrodes

2016 ◽  
Vol 6 (3) ◽  
pp. 392-398 ◽  
Author(s):  
X. Y. Duan ◽  
J. R. Li ◽  
L. M. Chang ◽  
C. W. Yang
Keyword(s):  
Service Life ◽  
Electrochemical Oxidation ◽  
Surface Characterization ◽  
Linear Sweep Voltammetry ◽  
Life Time ◽  
Electrode Reaction ◽  
Sno2 Electrode ◽  
Pbo2 Electrode ◽  
Oxidation Performance ◽  
The Difference

PbO2 and SnO2 are two promising anode materials for electrochemical oxidation. In order to highlight the difference between two kinds of electrodes in an electrochemical oxidation process, their morphology, structural, oxygen evolution overpotential (OEP), electrochemical activity and service life-time were compared in detail in this paper. Surface characterization by scanning electron microscope shows that the film of the PbO2 electrode is even, compact, non-porous, and non-cracked, while many cracks are present on the film of the SnO2 electrode. Electrochemical studies based on linear sweep voltammetry (LSV) and cyclic voltammetry (CV) prove that the OEP for the SnO2 electrode was much higher than that of the PbO2 electrode, and the electron-transfer kinetics and the reversibility of electrode reaction of the SnO2 electrode were superior to those of the PbO2 electrode. In electrochemical decomposition of p-nitrophenol, the degradation ratios at PbO2 and SnO2 anodes achieved 86.9% and 96.5%, respectively, after 120 min electrolysis, which verified the results of LSV and CV. The accelerated lifetime tests show that the service life time of the SnO2 electrode is far shorter than that of the PbO2 electrode, even though it was shown to be superior to the PbO2 in electrocatalytic activity.

scholarly journals Experimental and Simulation Study of the Electrode Reaction Mechanism of La3+in LiCl-KCl Eutectic Molten Salt

2012 ◽  
Vol 159 (4) ◽  
pp. F63-F67 ◽  
Author(s):  
C. P. Fabian ◽  
V. Luca ◽  
P. Chamelot ◽  
L. Massot ◽  
C. Caravaca ◽  
...  
Keyword(s):  
Reaction Mechanism ◽  
Molten Salt ◽  
Simulation Study ◽  
Electrode Reaction

scholarly journals Electrochemical oxidation of sulfamethoxazole using Ti/SnO2-Sb/Co-PbO2 electrode through ANN-PSO

2019 ◽  
Vol 84 (7) ◽  
pp. 713-727 ◽  
Author(s):  
Jiteng Wan ◽  
Chunji Jin ◽  
Banghai Liu ◽  
Zonglian She ◽  
Mengchun Gao ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Electrochemical Oxidation ◽  
Removal Efficiency ◽  
Current Density ◽  
Ph Value ◽  
Ann Model ◽  
Solution Ph ◽  
Pbo2 Electrode ◽  
Artificial Neural Network Ann ◽  
Major Factors

Even in a trace amounts, the presence of antibiotics in aqueous solution is getting more and more attention. Accordingly, appropriate technologies are needed to efficiently remove these compounds from aqueous environments. In this study, we have examined the electrochemical oxidation (EO) of sulfamethoxazole (SMX) on a Co modified PbO2 electrode. The process of EO of SMX in aqueous solution followed the pseudo-first-order kinetics, and the removal efficiency of SMX reached the maximum value of 95.1 % within 60 min. The effects of major factors on SMX oxidation kinetics were studied in detail by single-factor experiments, namely current density (1?20 mA cm-2), solution pH value (2?10), initial concentration of SMX (10?500 mg L-1) and concentration of electrolytes (0.05?0.4 mol L-1). An artificial neural network (ANN) model was used to simulate this EO process. Based on the obtained model, particle swarm optimization (PSO) was used to optimize the operating parameters. The maximum removal efficiency of SMX was obtained at the optimized conditions (e.g., current density of 12.37 mA cm-2, initial pH value of 4.78, initial SMX concentration of 74.45 mg L-1, electrolyte concentration of 0.24 mol L-1 and electrolysis time of 51.49 min). The validation results indicated that this method can ideally be used to optimize the related parameters and predict the anticipated results with acceptable accuracy.

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