Comparison of degradation mechanism of electrochemical oxidation of di- and tri-nitrophenols on Bi-doped lead dioxide electrode: Effect of the molecular structure

2009 ◽  
Vol 91 (1-2) ◽  
pp. 284-299 ◽  
Author(s):  
Yuan Liu ◽  
Huiling Liu ◽  
Jun Ma ◽  
Xi Wang
Keyword(s):  
Molecular Structure ◽  
Electrochemical Oxidation ◽  
Degradation Mechanism ◽  
Lead Dioxide ◽  
Electrode Effect ◽  
Lead Dioxide Electrode

The Lead Dioxide Anode. II. The Kinetics and Participation of the Lead Dioxide Electrode in Electrochemical Oxidation Reactions in Sulfuric Acid

1989 ◽  
Vol 42 (9) ◽  
pp. 1527 ◽  
Author(s):  
TH Randle ◽  
AT Kuhn
Keyword(s):  
Sulfuric Acid ◽  
Electrochemical Oxidation ◽  
Maximum Rate ◽  
Lead Dioxide ◽  
Chemical Oxidation ◽  
Oxidation Reactions ◽  
Electrochemical Regeneration ◽  
Electrode Surfaces ◽  
Lead Dioxide Electrode ◽  
Lead Dioxide Anode

Lead dioxide is a strong oxidizer in sulfuric acid, consequently electrochemical oxidation of solution species at a lead dioxide anode may occur by a two-step, C-E process (chemical oxidation of solution species by PbO2 followed by electrochemical regeneration of the reduced lead dioxide surface). The maximum rate of each step has been determined in sulfuric acid for specified lead dioxide surfaces and compared with the rates observed for the electrochemical oxidation of cerium(III) and manganese(II) on the same electrode surfaces. While the rate of electrochemical oxidation of a partially reduced PbO2 surface may be sufficient to support the observed rates of CeIII and MnII oxidation at the lead dioxide anode, the rate of chemical reaction between PbO2 and the reducing species is not. Hence it is concluded that the lead dioxide electrode functions as a simple, 'inert' electron-transfer agent during the electrochemical oxidation of CellI and MnII in sulfuric acid. In general, it will most probably be the rate of the chemical step which determines the feasibility or otherwise of the C-E mechanism.

Electrocatalytic degradation of ibuprofen in aqueous solution by a cobalt-doped modified lead dioxide electrode: influencing factors and energy demand

RSC Advances ◽  
2016 ◽  
Vol 6 (36) ◽  
pp. 30598-30610 ◽  
Author(s):  
Ying Wang ◽  
Chanchan Shen ◽  
Lifang Li ◽  
Haiyan Li ◽  
Manman Zhang
Keyword(s):  
Aqueous Solution ◽  
Electrochemical Oxidation ◽  
Influencing Factors ◽  
Energy Demand ◽  
Lead Dioxide ◽  
Lead Dioxide Electrode ◽  
Electrocatalytic Degradation

PbO2 electrode modified with Co exhibited higher electrochemical oxidation. The effects of HA, FA, OA and CA were investigated.

Raman Changes Induced by Electrochemical Oxidation of Poly(triarylamine)s: Toward a Relationship between Molecular Structure Modifications and Charge Generation

2015 ◽  
Vol 119 (4) ◽  
pp. 1756-1767 ◽  
Author(s):  
Thiago Cervantes ◽  
Guy Louarn ◽  
Henrique de Santana ◽  
Lukasz Skorka ◽  
Irena Kulszewicz-Bajer
Keyword(s):  
Molecular Structure ◽  
Electrochemical Oxidation ◽  
Charge Generation
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