Influence of Supporting Electrolytes on RO 16 Dye Electrochemical Oxidation Using Boron Doped Diamond Electrodes

Migliorini, Fernanda L.; Couto, Andréa Boldarini; Alves, Suellen Aparecida; Lanza, Marcos R.V.; Ferreira, N.G.

doi:10.1590/1980-5373-mr-2016-0153

Cited by 7 publications

(5 citation statements)

References 28 publications

(32 reference statements)

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“…Nowadays, BDD films seem to be a suitable anode materials in modern electroanalysis such as clinical, environmental and sanitation applications. The BDD anodes have displayed a sensitive platform in analytical determination of drugs , biomolecules and other organic species as well as in measuring chemical oxygen and trace metals in water . However, use of said electrode films was decided against due to the difficulties in setup requirements involved in the deposition procedures as well as to the passive nature of BDD films that makes them unable to interact or bond to organic compounds .…”

Section: Introductionmentioning

confidence: 99%

Chlorpromazine Electro‐oxidation at BDD Electrode Modified with nZVI Nanoparticles Impregnated NiAl LDH

et al. 2020

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Nanocomposite of nanoscale zero‐valent iron (nZVI) and layered double hydroxide (LDH) was used as modifier for boron‐doped diamond electrode in determination of anti‐psychotic drug chlorpromazine (CPZ). nZVI nanoparticles were prepared by liquid phase reduction of ferric chloride with sodium borohydride on the surface of NiAl LDH matrix owing to the strong exchange and confinement efficiency of LDH. The structure, binding and surface properties of the nZVI@LDH nanocomposite were monitored using powder X‐ray diffractometry, FT‐IR spectroscopy, scanning and transmission microscopy and BET techniques. The electrochemical properties of the modified electrode were investigated by CV and EIS, performed in a phosphate buffer containing ferro/ferricyanide as redox probe. The modified electrode exhibited excellent electrochemical performance compared with unmodified electrode. As regard potential application of the nanocomposite surface to the CPZ detection, square‐wave voltammetric signals showed a good linear correlation over CPZ concentrations in a broad range from 0.1 to 8.0 μM with low detection limit of 0.005 μM. Nevertheless, these results suggest that the proposed nanocomposite modifier surface provides exceptional synergy and significant enhancement effect to the voltammetric response of CPZ and thus could be applied as highly efficient and stable platform of sensors in clinical analysis.

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Section: Introductionmentioning

confidence: 99%

Chlorpromazine Electro‐oxidation at BDD Electrode Modified with nZVI Nanoparticles Impregnated NiAl LDH

et al. 2020

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“…The peaks assigned to doped boron at 500 cm −1 and 1200 cm −1 are obvious in both films. Compared with BDD 18 , the Raman spectrum of BDD 6 has a more obvious peak at 1580 cm −1 , indicating there is more non-diamond phase 29 in it. The calculated sp(3)/sp(2) ratio of BDD 6 and BDD 18 was 4.9, 2.5, respectively.…”

Section: Resultsmentioning

confidence: 98%

The Dependence of Oxidation Parameters and Dyes’ Molecular Structures on Microstructure of Boron-Doped Diamond in Electrochemical Oxidation Process of Dye Wastewater

Mei

Zhu

Wei

et al. 2018

J. Electrochem. Soc.

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In this study, the microstructure of boron-doped diamond (BDD), such as grain size, grain boundaries, surface boron concentration, film thickness, ratio of sp(3)/sp(2) was manipulated by adjusting the deposition parameters of hot filament chemical vapor deposition. Furthermore, Reactive orange 1 simulated dye wastewater was treated to discuss the degradation relationship between the microstructure of BDD electrodes and oxidation parameters. BDD electrode showed the worst electrocatalytic performance toward simulated dye wastewater, but exhibited the highest sensitivity to degradation parameters. In addition, the degradation processes of 8 kinds of synthetic dyes with different molecular structures were compared and the degradation relationship between the microstructure of BDD and the molecular structure of dyes was investigated. The degradation of refractory dyes were much more dependent on the microstructure of BDD electrodes compared to easily degradable ones, indicating that the optimization of oxidation parameters and the electrode microstructure are more effective to the degradation of refractory organic pollutants.

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“…The effect of various supporting electrolytes on the dye’s color removal, such as NaCl, Na 2 SO 4 , and H 2 SO 4 was considered by different authors − and they concluded that the maximum degree of color removal was achieved in the existence of chloride ions, chlorides leads to larger amount of reaction intermediates compared to treatment in sulfate electrolyte. If Na 2 SO 4 is used as supporting electrolyte the peroxydisulfate anions will be existing in the solution, according to the following reaction: …”

Section: Resultsmentioning

confidence: 99%

“…The supporting electrolyte performance was found to be affected by dye structure, operating conditions, and electrode material. Lan et al, 55 investigated the role of salts, such as sulfates and chlorides in the electrochemical treatment of wastewater. The comparison highlighted the selectivity of the reaction between organics and sulfate radicals.…”

Section: Industrial and Engineering Chemistry Researchmentioning

confidence: 99%

Removal of Dyes from Waste Solutions by Anodic Oxidation on an Array of Horizontal Graphite Rods Anodes

Abdel‐Aziz

Bassyouni

Zoromba

et al. 2018

Ind. Eng. Chem. Res.

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In this work, degradation of two dyes, methylene blue and methyl blue, by anodic oxidation in a new arranged electrochemical cell is investigated in the presence of Cl − ions. The cell consists of an array of graphite rods working as the anode placed horizontally between two horizontal stainless steel screens cathodes. The cell performance is tested in terms of the color removal efficiency, COD removal, electrical energy consumption, anode efficiency, and current efficiency. Parameters studied are initial dye concentration, NaCl concentration, applied current density, and initial pH of the electrolyte. A maximum color removal of 94% and 98% were achieved for methylene blue and methyl blue respectively after 30 min treatment time. The normalized space velocity in terms of the kinetic parameters is determined and a maximum value of 3.59 m 3 m −3 h −1 was obtained for methylene blue and 4.09 for methyl blue.

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Influence of Supporting Electrolytes on RO 16 Dye Electrochemical Oxidation Using Boron Doped Diamond Electrodes

Cited by 7 publications

References 28 publications

Chlorpromazine Electro‐oxidation at BDD Electrode Modified with nZVI Nanoparticles Impregnated NiAl LDH

Chlorpromazine Electro‐oxidation at BDD Electrode Modified with nZVI Nanoparticles Impregnated NiAl LDH

The Dependence of Oxidation Parameters and Dyes’ Molecular Structures on Microstructure of Boron-Doped Diamond in Electrochemical Oxidation Process of Dye Wastewater

Removal of Dyes from Waste Solutions by Anodic Oxidation on an Array of Horizontal Graphite Rods Anodes

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