Electrocatalytic oxidation of nitrite to nitrate mediated by Fe(III) poly-3-aminophenyl porphyrin grown on five different electrode surfaces

Armijo, Francisco; Goya, M.C.; Reina, Matı́as; Canales, M.J; Arévalo, M.C.; Aguirre, Marı́a J.

doi:10.1016/j.molcata.2006.11.055

Cited by 48 publications

(14 citation statements)

References 49 publications

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“…The oxidation peak potential at 0.997 V should be assigned to bare GCE, which is corresponding to the conversion of NO 2 -to NO 3 -through a two-electron oxidation process, while the oxidation peak potential of the modified electrode shifts negatively toward 0.897 V with an increase in peak current at a certain degree indicating that a-ZrP/MnTMPyP nanocomposite can efficiently promote the oxidation of NO 2 - [42]. According to related literatures [48], the mechanism of electrocatalytic oxidation on nitrite of the modified electrode can be illustrated using the following equations:…”

Section: Electrochemical Characterizationmentioning

confidence: 86%

A laminar nanocomposite constructed by self-assembly of exfoliated α-ZrP nanosheets and manganese porphyrin for use in the electrocatalytic oxidation of nitrite

Pan

Zhang

et al. 2015

J Mater Sci

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Laminar nanocomposite of a-ZrP/MnTMPyP, [5, 10, 15, 20-tetrakis (N-methylpyridinium-4-yl) porphyrinato manganese (III)], was obtained through the selfassembly of a-ZrP nanosheets and manganese porphyrin molecules, namely the exfoliation/restacking route. The final products were characterized by several analytic techniques such as XRD, IR, UV-Vis, and SEM. Meanwhile, the surface charge change of layered zirconium phosphate during the restacking process was monitored by a Zetasizer Nano instrument. The zeta potential value of a-ZrP colloidal dispersion is -40.1 mV, indicating that the colloidal dispersion was stable and well dispersed. The cyclic voltammetry measurements of a-ZrP/MnTMPyP film-modified glass carbon electrode displayed a pair of well-defined oxidation/reduction peaks with redox potentials at -0.256 and -0.197 V with an increase in the peak current compared to MnTMPyP aqueous solution. Furthermore, a-ZrP/MnTMPyP hybrid thin film exhibited excellent electrocatalytic activities toward oxidation of nitrite. The oxidation peak current increased linearly with the square root of scan rate, suggesting that the electrocatalytic process was controlled by nitrite diffusion. Finally, a detection limit of 5.3 9 10 -5 M was estimated at a signal-to-noise ratio of 3.0 with a concentration range of 1.5 9 10 -4 to 4.76 9 10 -3 M.

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Section: Electrochemical Characterizationmentioning

confidence: 86%

A laminar nanocomposite constructed by self-assembly of exfoliated α-ZrP nanosheets and manganese porphyrin for use in the electrocatalytic oxidation of nitrite

Pan

Zhang

et al. 2015

J Mater Sci

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“…In principle, electrochemical determination of nitrite may involve both oxidation and reduction, but in actual practice, oxidation is usually preferred over reduction because cathodic nitrite measurement is prone to interference from other readily reducible species such as nitrate ion and molecular oxygen [12]. Nitrite is electroactive at traditional electrodes made up of glassy carbon, platinum, diamond, gold, copper, and transition metal oxides [13][14][15]. The electrochemical oxidation of nitrite on bare electrodes may be adversely affected by several species (such as nitrite oxidation products and intermediates) which can inhibit electrode processes via irreversible adsorption on the GCE surface and, thereby, decrease both sensitivity and accuracy [16,17].…”

Section: Introductionmentioning

confidence: 99%

Square Wave Voltammetric Detection of Nitrite on Platinum Electrode Modified with Moringa oleifera Mediated Biosynthesized Nickel Nanoparticles

Mamuru¹,

Saki²,

Bello³

et al. 2018

JAEC

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A R T I C L E D E T A I L S A B S T R A C TIn this study nickel chloride was reduced to its "nanoform" through a one-step synthesis protocol using the leaves extract of Moringa oleifera. Microscopic and spectroscopic techniques such as UV-vis., FTIR and SEM were used to confirm the formation of nickel nanoparticles. Electrochemical characterization using cyclic voltammetry and square wave voltammetry further reveals the electrochemical activity of synthesised nickel nanoparticles; as preliminary study on nitrite electro-oxidation shows that nickel nanoparticles can catalyse this process better than some other nanoparticles.

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“…Электрополимеризации (аминофенил)порфиринов посвящено большое количество публикаций, [12][13][14][15][16][17][18][19][20] в которых, в частности, показано влияние различных факторов на процесс формирования пленки и ее по-требительские свойства. В настоящей работе получены поли-порфириновые пленки на основе H 2 T(p-NH 2 Ph)P в ДМСО.…”

Section: Introductionunclassified

Formation of poly-Phenylporphyrin Film Activated by Superoxide Anion Radical

Chulovskaya¹,

Kuzmin²,

Parfenyuk³

2015

MHC

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Electrocatalytic oxidation of nitrite to nitrate mediated by Fe(III) poly-3-aminophenyl porphyrin grown on five different electrode surfaces

Cited by 48 publications

References 49 publications

A laminar nanocomposite constructed by self-assembly of exfoliated α-ZrP nanosheets and manganese porphyrin for use in the electrocatalytic oxidation of nitrite

A laminar nanocomposite constructed by self-assembly of exfoliated α-ZrP nanosheets and manganese porphyrin for use in the electrocatalytic oxidation of nitrite

Square Wave Voltammetric Detection of Nitrite on Platinum Electrode Modified with Moringa oleifera Mediated Biosynthesized Nickel Nanoparticles

Formation of poly-Phenylporphyrin Film Activated by Superoxide Anion Radical

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