Electrocatalytic activity of Ce-PbO2/C anode for acid red B reduction in aqueous solution

Hu, Xiang; Yu, Yanlong; Yang, Lijuan

doi:10.1007/s10008-015-2781-3

Cited by 24 publications

(4 citation statements)

References 39 publications

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“…8,9 Another way is to create a composite material that by its properties would not be inferior to the base oxide, but would have lower internal stresses. 10,11 It is well recognized, [12][13][14] that the presence of various ionic dopants and oxides of other metals in deposition electrolytes has a significant effect on the composition, physico-chemical properties and electrocatalytic activity of the resulting materials based on lead dioxide. At the same time, unlike metal coatings, the effect of organic additives on the regularities of PbO 2 electrodeposition and the properties of the resulting materials remains practically unexplored.…”

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confidence: 99%

Composite Electrodes PbO₂-Nafion®

Величенко

Luk’yanenko

Николенко

et al. 2020

J. Electrochem. Soc.

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PbO2-polyelectrolyte composite materials with a content of polyelectrolyte up to 13 wt% are formed by electrochemical deposition of PbO2, depending on the solution composition and the deposition conditions. Several assumptions concerning the mechanism of the formation of composites that taking into account the oxygen-containing species of lead non-fixed on the surface, located in the near-electrode zone have been proposed. The shape and size of the PbO2 crystals is altered by the presence of polyelectrolyte. The surface is more uniform and the crystals are smaller, there is not a pronounced crystallographic orientation, however the phase content remains practically the same as in the undoped sample. When using composite materials based on lead dioxide containing polyelectrolyte, selective changes in the overvoltage of oxygen evolution and electrochemical conversion of organic substances into aliphatic non-toxic compounds are observed. In this case, the electrocatalytic activity of composite materials depends on the nature and content of the polyelectrolyte additive in the oxide.

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confidence: 99%

Composite Electrodes PbO₂-Nafion®

Величенко

Luk’yanenko

Николенко

et al. 2020

J. Electrochem. Soc.

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“…When active anodes such as Pt, IrO 2 , and RuO 2 are used, M( • OH) is converted into a less oxidizing species such as chemisorbed MO that oxidizes organics mainly to carboxylic acids [1], whereas the alternative use of a high oxidation power materials [17][18][19][20][21] like SnO 2 , PbO 2 , and BDD favors the electrochemical incineration of organics at the anode vicinity by the great production of hydroxyl radicals (e.g., BDD( • OH)) [5].…”

Section: Dedicated To Prof Fritz Scholz On the Occasion Of His 65th Birthdaymentioning

confidence: 99%

Understanding the electrochemical oxidation of dyes on platinum and boron–doped diamond electrode surfaces: experimental and computational study

Soares

Silva

Santos

et al. 2020

J Solid State Electrochem

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Anodic oxidation (AO) approach proceeds via direct and indirect electrochemical pathways and their subsequent reactions. The interest to elucidate the mechanisms for removing dyes from water contributes to the understanding of more complex reactions involving organic pollutants towards anode surfaces. The present study was motivated by the reports that promote the use of AO for removing different organic compounds but no considerations about the influence of different functional groups in their structure have been discussed. Therefore, we have evaluated the influence of different functional groups in the dye structure (Reactive Orange 16, Reactive Violet 4, Reactive Red 228, and Reactive Black 5) by potentiodynamic measurements and by computational analyzes using density functional theory (DFT). The computational studies have allowed to carry out morphological studies on the frontier orbitals where the electrons are more energetic and then, the electron-transfer to electrode surface is achieved, which was associated to the electrochemical measurements (current-potential profiles). Also, the theoretical studies were used to understand the bulk electrolysis, in terms of mineralization. The results clearly demonstrate that organic molecules can be degraded in different way and level due to the oxidants electrochemically generated as well as the interaction of dyes with anode surface by adsorbed/non-adsorbed intermediates. Conversely, the decolorization mechanisms, which are related to the fragmentation of chromophore group, are associated to the direct AO approach, favoring different order of elimination, as already reported in our previous work. The results were discussed in light of the existing literature.

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“…A two-electrode device was used with two treated titanium sheets as the cathode and the anode (the distance between anode and cathode was 3 cm), which were vertically inserted in a mixture solution containing 0. [36,37].…”

Section: Photoanode Preparationmentioning

confidence: 99%

Fabrication and photoelectrocatalytic performance of C3N4-modified Ti/PbO2 anode with surface hydrophobicity

Lyu

Zhou

et al. 2020

J Solid State Electrochem

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Reasonable hydrophobic anode is deemed to be a promising electrode for photoelectrocatalytic degradation of wastewater. In this study, the C 3 N 4 -modified Ti/PbO 2 electrode with tunable hydrophobic characteristics is fabricated by a facile electrodeposition process. It is found that the introduction of C 3 N 4 into the PbO 2 films changed the morphology, surface hydrophilicity, and hydrophobicity of the electrode, which promotes the photoelectrochemical active areas, generating efficiency of hydroxyl radicals. In addition, introducing C 3 N 4 into PbO 2 coating can enhance oxygen evolution potential and carrier density of PbO 2 . Photoelectrocatalytic degradation experiments show that the addition of C 3 N 4 can further improve the catalytic performance of PbO 2 and there exists a significant photoelectric synergism in photoelectrocatalytic process. These results demonstrate that the combination of reasonable surface hydrophobic characteristics and photoelectrocatalytic is a prospective approach for wastewater treatment.

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Electrocatalytic activity of Ce-PbO2/C anode for acid red B reduction in aqueous solution

Cited by 24 publications

References 39 publications

Composite Electrodes PbO₂-Nafion®

Composite Electrodes PbO₂-Nafion®

Understanding the electrochemical oxidation of dyes on platinum and boron–doped diamond electrode surfaces: experimental and computational study

Fabrication and photoelectrocatalytic performance of C3N4-modified Ti/PbO2 anode with surface hydrophobicity

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Electrocatalytic activity of Ce-PbO2/C anode for acid red B reduction in aqueous solution

Cited by 24 publications

References 39 publications

Composite Electrodes PbO2-Nafion®

Composite Electrodes PbO2-Nafion®

Understanding the electrochemical oxidation of dyes on platinum and boron–doped diamond electrode surfaces: experimental and computational study

Fabrication and photoelectrocatalytic performance of C3N4-modified Ti/PbO2 anode with surface hydrophobicity

Contact Info

Product

Resources

About

Composite Electrodes PbO₂-Nafion®

Composite Electrodes PbO₂-Nafion®