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Hu, Xien; Yang, Haozhou; Wang, X.J.; Bai, Rui

doi:10.1023/a:1015505730165

Cited by 8 publications

(3 citation statements)

References 9 publications

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“…Since at high cathodic potentials chemisorbed hydrogen is generated at the Ni-PVC electrode surface by electrolysis of water, we considered the possibility of achieving the decolorization by a cathodic electron transfer according to the reactions 1 and 2 and by ECH. The decolorization achieved by electron transfer and by ECH of azo dyes has already been described [38][39][40][41][42][43][44][45][46][47]. In the case of decolorization by ECH, we considered that the active hydrogen species can lead to the rupture of azo-bonds accompanied by an adsorption step [29, 39-41, 43, 44, 47].…”

Section: Electrochemical Measurementsmentioning

confidence: 99%

Degradation of Reactive Black 5 and Basic Yellow 28 on Metallic-Polymer Composites

Méndez¹,

Tovar²,

Dávila³

et al. 2007

Port. Electrochim. Acta

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The textile dyes Reactive Black (RB5) and Basic Yellow 28 (BY28) were individually exposed to electrochemical treatment in 0.1 M KOH and in phosphate buffer solution pH 5.1, respectively. The cathodic decolorization of the azo dye RB5 was carried out using a Ni-polyvinylchloride composite. The methine dye BY28 was anodically treated on a Co-polyvinylchloride. The electrochemical study of the dye solution was carried out by repetitive cyclic voltammetry (RCV) under potentiostatic conditions in stationary and flow regime. The effect of various experimental parameters, such as potential and electrolysis time was investigated. The studies showed that for the RB5 (20 to 80 ppm) dye solutions, around 98 % of the color was removed after 60 min treatment at -3.0 V vs. SCE. It was also demonstrated that for the BY28 (15 ppm) dye solution, 6-10 cycles or low potentials (-300 mV) during 200 min electrolysis were sufficient for the decolorization of the solution. However, COD and TOC values did not decrease.

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Section: Electrochemical Measurementsmentioning

confidence: 99%

Degradation of Reactive Black 5 and Basic Yellow 28 on Metallic-Polymer Composites

Méndez¹,

Tovar²,

Dávila³

et al. 2007

Port. Electrochim. Acta

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“…However, industrial application of the toxic mercury electrode with high over-potential is impossible. Dolgachev and Hu found that several noble metals or transient metals could serve as good cathodes in the electroreduction of ANDMU [4][5][6]. In this paper the electroreduction behavior of ANDMU on platinum and nickel cathodes, and the mechanism of its reduction, are discussed.…”

mentioning

confidence: 94%

Electroreduction of 6-amino-5-nitroso-1,3-dimethyluracil on polycrystalline platinum and nickel cathodes in acid aqueous solution

Chen

Zheng

2011

Res Chem Intermed

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The reduction of 6-amino-5-nitroso-1,3-dimethyluracil (ANDMU) is a key step in caffeine synthesis. Electroreduction technology is a promising green chemical process. The voltammetric behavior of ANDMU at polycrystalline platinum and nickel cathodes was studied. The Nicholson theory was used to resolve the reduction process semi-quantitatively. The results show that ANDMU mainly undergoes an ECE (electron transfer, chemical reaction, electron transfer) process involving four electrons on the platinum and nickel cathodes in which the two electron-transfer steps occur at almost the same potential and the rate of the coupling chemical reaction between two electron-transfer steps is very fast. Apparent kinetic data and diffusion coefficient were determined for the platinum rotating-disk electrode.

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“…A wide range of materials have been tested for possible application in three-dimensional electrodes, for example, foamed nickel structures for cathodic electrohydrogenation reaction, electrodeposited PbO 2 for the anodic oxidation of cyanide, or activated carbon fibres for ground water purification [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Model calculations to optimise multi-cathode flow through electrolysers: direct cathodic reduction of C.I. Sulphur Black 1

et al. 2009

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Untitled

Cited by 8 publications

References 9 publications

Degradation of Reactive Black 5 and Basic Yellow 28 on Metallic-Polymer Composites

Degradation of Reactive Black 5 and Basic Yellow 28 on Metallic-Polymer Composites

Electroreduction of 6-amino-5-nitroso-1,3-dimethyluracil on polycrystalline platinum and nickel cathodes in acid aqueous solution

Model calculations to optimise multi-cathode flow through electrolysers: direct cathodic reduction of C.I. Sulphur Black 1

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