Electrochemical Synthesis of Sodium Peroxycarbonate at Boron-Doped Diamond Electrodes

Saha, Madhu Sudan; Furuta, Tsuneto; Nishiki, Yoshinori

doi:10.1149/1.1576050

Cited by 66 publications

(49 citation statements)

References 14 publications

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“…[45,[51][52][53][54][55] The great effectiveness of diamond films in anodic oxidation has been confirmed in the degradation of ammonia, cyanide, phenol, chlorophenols, aniline, dyes, surfactants, alcohols and many other pollutants. [49,51,55,56] In addition to ROS, weak oxidants such as peroxodisulfate, peroxodicarbonate, and peroxodiphosphate can also be formed from the oxidation of sulfate or bisulfate, [57] bicarbonate, [58] and phosphate [59] at the BDD surface [Eq. (9)- (11)].…”

Section: Diamond Films For Wastewater Treatmentmentioning

confidence: 99%

Electrochemical Alternatives for Drinking Water Disinfection

2008

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Chlorination is the most common method worldwide for the disinfection of drinking water. However, the identification of potentially toxic products from this method has encouraged the development of alternative disinfection technologies. Among them, electrochemical disinfection has emerged as one of the more feasible alternatives to chlorination. This article reviews electrochemical systems that can contribute to drinking water disinfection and underscores the efficiency of recently developed diamond films in chlorine-free electrochemical systems.

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Section: Diamond Films For Wastewater Treatmentmentioning

confidence: 99%

Electrochemical Alternatives for Drinking Water Disinfection

2008

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“…Nevertheless, it is well known that other oxidizing species, such as ROS, peroxodisulfate or peroxodicarbonate can also be formed as the result of the oxidation of sulfate, carbonate and phosphate in the BDD surface, causing the addition of species containing those cations an enhancement of the electro- oxidation rate [18][19][20]. Some authors [21,22] have reported current efficiency in BDD electrodes is limited by mass transport effects, when large molecules (such as dyes) or chemical species at low concentrations are being processed.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the electrochemical oxidation of acid-yellow 36 azo dye using boron-doped diamond electrodes by addition of ferrous ion

Villanueva-Rodríguez

Hernández-Ramírez

Peralta‐Hernández

et al. 2009

Journal of Hazardous Materials

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“…In recent years, electrochemical oxidation with conductive-diamond anodes has become one of the most promising technologies in the treatment of industrial wastes polluted with organics [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32] and in the electrosynthesis of inorganic oxidants [13,[33][34][35]. Compared with other electrode materials, conductive-diamond has shown higher chemical and electrochemical stability as well as a higher current efficiency.…”

Section: Introductionmentioning

confidence: 99%

“…The advantageous properties described above have led to great improvements (in both efficiency and electrode stability) in the use of conductive diamond in the electrosynthesis of oxidants. A number of recent studies have been published in which the generation of peroxodisulphates [33], peroxodiphosphate [13], percarbonates [34], ferrates [35] and hypochlorite [37] by electrochemical techniques are described. Significant improvements are reported as compared to more commonly used synthesis methods.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical synthesis of peroxomonophosphate using boron-doped diamond anodes

et al. 2007

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OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible. This is an author-deposited version published in: http://oatao.univ-toulouse.fr/ Eprints ID : 3043 Abstract A new method for the synthesis of peroxomonophosphate, based on the use of boron-doped diamond electrodes, is described. The amount of oxidant electrogenerated depends on the characteristics of the supporting media (pH and solute concentration) and on the operating conditions (temperature and current density). Results show that the pH, between values of 1 and 5, does not influence either the electrosynthesis of peroxomonophosphate or the chemical stability of the oxidant generated. Conversely, low temperatures are required during the electrosynthesis process to minimize the thermal decomposition of peroxomonophosphate and to guarantee significant oxidant concentration. In addition, a marked influence of both the current density and the initial substrate is observed. This observation can be explained in terms of the contribution of hydroxyl radicals in the oxidation mechanisms that occur on diamond surfaces. In the assays carried out below the water oxidation potential, the generation of hydroxyl radicals did not take place. In these cases, peroxomonophosphate generation occurs through a direct electron transfer and, therefore, at these low current densities lower concentrations are obtained. On the other hand, at higher potentials both direct and hydroxyl radical-mediated mechanisms contribute to the oxidant generation and the process is more efficient. In the same way, the contribution of hydroxyl radicals may also help to explain the significant influence of the substrate concentration. Thus, the coexistence of both phosphate and hydroxyl radicals is required to ensure the generation of significant amounts of peroxomonophosphoric acid.

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Electrochemical Synthesis of Sodium Peroxycarbonate at Boron-Doped Diamond Electrodes

Cited by 66 publications

References 14 publications

Electrochemical Alternatives for Drinking Water Disinfection

Electrochemical Alternatives for Drinking Water Disinfection

Enhancing the electrochemical oxidation of acid-yellow 36 azo dye using boron-doped diamond electrodes by addition of ferrous ion

Electrochemical synthesis of peroxomonophosphate using boron-doped diamond anodes

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