Effect of boron concentration on the electrochemical reduction of nitrates on polycrystalline diamond electrodes

Ndao, A.N.; Zenia, F.; Deneuville, A.; Bernard, M.; Lévy‐Clément, C.

doi:10.1016/s0925-9635(99)00328-3

Cited by 53 publications

(33 citation statements)

References 11 publications

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“…[125][126][127][128] . LevyClement et al 126 found that at applied potentials between -1.5 and -1.7 V vs. SCE the amount of NO 3 -reduced is a constant 10% and that it is mainly transformed into gaseous products, then it increases to 29% at -2V with almost equal parts of nitrite and nitrogenous gas formed, without the production of ammonium.…”

Section: Bdd Electrode For Wastewater Treatmentmentioning

confidence: 99%

Boron doped diamond electrode for the wastewater treatment

Alfaro¹,

Ferro²,

Martínez‐Huitle³

et al. 2006

J. Braz. Chem. Soc.

142

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Os estudos sobre eletroquímica do diamante iniciaram-se há mais de quinze anos, com o primeiro artigo publicado nessa área, por Pleskov. Depois disso, pesquisas começaram no Japão, Estados Unidos, França, Suíssa e outros países, sendo que nos últimos anos o número de publicações aumentou consideravelmente. Filmes de diamante têm sido o objeto de aplicações e pesquisa fundamental em eletroquímica, abrindo um novo campo conhecido como eletroquímica de eletrodos de diamante. Aqui, nós apresentamos uma breve história e o processo de síntese de filme de diamante. O principal objetivo deste trabalho é resumir os resultados mais importantes em oxidação eletroquímica, usando-se eletrodos de diamante.Electrochemical studies of diamond were started more than fifteen years ago with the first paper on diamond electrochemistry published by Pleskov. After that, work started in Japan, United States of America, France, Switzerland and other countries. Over the last few years, the number of publications has increased considerably. Diamond films have been the subject of applications and fundamental research in electrochemistry, opening up a new branch known as the electrochemistry of diamond electrodes. Here, we first present a brief history and the process of diamond film synthesis. The principal objective of this work is to summarize the most important results in the electrochemical oxidation using diamond electrodes.

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Section: Bdd Electrode For Wastewater Treatmentmentioning

confidence: 99%

Boron doped diamond electrode for the wastewater treatment

Alfaro¹,

Ferro²,

Martínez‐Huitle³

et al. 2006

J. Braz. Chem. Soc.

142

View full text Add to dashboard Cite

show abstract

“…Such polarizations produce intense hydrogen evolution, which can be accompanied by an undesirable increase in the solution temperature depending on the total charge passed. Additionally, several publications have reported the use of diamond electrodes as very efficient cathode materials for the electrochemical reduction of nitrate ions dissolved in high concentrations in wastewaters [19][20][21][22]. As the nitrate reduction takes place at fairly negative potentials where the hydrogen evolution reaction (HER) also occurs, the efficiency of the process might be related to surface activation.…”

Section: Introductionmentioning

confidence: 99%

On the activation and physical degradation of boron-doped diamond surfaces brought on by cathodic pretreatments

et al. 2010

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The electrochemical activation and physical degradation of boron-doped diamond (BDD) electrodes with different boron doping levels after repeated cathodic pretreatments are reported. Galvanostatic cathodic pretreatment passing up to -14000 C cm -2 in steps of -600 C cm -2 using -1 A cm -2 caused significant physical degradation of the BDD surface, with film detachment in some areas. Because of this degradation, a great increase in the electrochemically active area was observed in Tafel plots for the hydrogen evolution reaction (HER) in acid media. The minimum cathodic pretreatment needed for the electrochemical activation of the BDD electrodes without producing any observable physical degradation on the BDD surfaces was determined using electrochemical impedance spectroscopy (EIS) measurements and cyclic voltammetry: -9 C cm -2 , passed at -1 A cm -2 . This optimized cathodic pretreatment can be safely used when electrochemical experiments are carried out on BDD electrodes with doping levels in the range between 800 and 8000 ppm.

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“…Boron doped diamond (BDD) has been extensively reported as an excellent material to be applied as an electrode in electrochemical study due to its outstanding features such as: its wide potential window in aqueous solutions as well as its weak adsorption for most types of molecules [1,2]. However, BDD electrochemical behavior may be improved from the surface modification with deposition of particle metals, which are responsible for increasing its electrocatalytic activity thus increasing its sensitivity and selectivity for electrochemical process.…”

Section: Introductionmentioning

confidence: 99%

A comparative study of copper electrodeposition and photoelectrodeposition on boron doped diamond

Couto

Ribeiro

Migliorini

et al. 2013

Diamond and Related Materials

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Copper (Cu) electrodeposition and photoelectrodeposition on highly boron-doped diamond films (BDD) were investigated, at two different pH solutions. Cu particles were deposited in the potentiostat mode and under UV irradiation. The as-grown as well as the Cu modified BDD films were characterized by Raman Spectroscopy and Scanning Electron Microscopy. The copper photocatalytic deposition on BDD was discussed taking into account the influence of the photogenerated electrons for photoelectrodeposition process at both acid and neutral pH solutions. Under UV irradiation, the copper deposits presented higher density and uniformity all over the crystal faces when compared with those without UV irradiation.This behavior may be attributed to BDD semiconductor character due to its photogenerated electrons which enhanced the copper reduction reaction.

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Effect of boron concentration on the electrochemical reduction of nitrates on polycrystalline diamond electrodes

Cited by 53 publications

References 11 publications

Boron doped diamond electrode for the wastewater treatment

Boron doped diamond electrode for the wastewater treatment

On the activation and physical degradation of boron-doped diamond surfaces brought on by cathodic pretreatments

A comparative study of copper electrodeposition and photoelectrodeposition on boron doped diamond

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