Electrocatalytic reduction of hydrogen peroxide at Prussian blue modified electrode: An in situ Raman spectroelectrochemical study

Mažeikienė, Regina; Niaura, Gediminas; Malinauskas, Albertas

doi:10.1016/j.jelechem.2011.06.022

Cited by 56 publications

(31 citation statements)

References 30 publications

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“…The results were compared to those obtained with a bare GCE. Hydrogen peroxide can be electrochemically determined by reduction [25][26][27][28][29] or oxidation [30][31][32][33][34]. In this study, the best results (see discussion below) were obtained by oxidation at an applied potential (E app ) of +1.5 V.…”

Section: B Optimization Of Experimental Conditions For H 2 O 2 Detecmentioning

confidence: 79%

Nonenzymatic Amperometric Sensors for Hydrogen Peroxide Based on Melanin-Capped Fe³⁺-, Cu²⁺-, or Ni²⁺-Modified Prussian Blue Nanoparticles

et al. 2015

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Three novel non-enzymatic sensors based on the modification of a glassy carbon electrode with nanoparticles of Fe 3+ , Cu 2+ or Ni 2+ Prussian blue derivatives (PB) are proposed herein. The Fe 3+ -, Cu 2+ -and Ni 2+ -modified Prussian blue nanoparticles were supported in an environmentally-friendly chemical product known as melanin. The nanomaterials prepared were characterized by transmission electron microscopy (TEM) images, electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV). The drop casting method was used to build the enzymeless sensors, which were able to catalyze the oxidation of hydrogen peroxide at +1.5 V. The calibration curves obtained by amperometry were linear in the range of 0.1 to 13.0 mmol L -1 . Several figures of merit were obtained in order to characterize the analytical electrochemical behavior of the as-prepared sensors. For instance, the detection limits achieved were 0.14, 0.32 and 0.57 µmol L -1 for the melanincapped modified Prussian blue nanoparticle sensor containing respectively Fe 3+ , Cu 2+ and Ni 2+ ions. These values are lower than the detection limits provided by other non-enzymatic sensors. The sensors were applied for the detection of hydrogen peroxide in tooth whitening gel. The results obtained were compared with those of the standard method.Index Terms-Non-enzimatic amperometric sensors, Prussian blue derivatives, nanoparticles, hydrogen peroxide, tooth whitening gel.

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Section: B Optimization Of Experimental Conditions For H 2 O 2 Detecmentioning

confidence: 79%

Nonenzymatic Amperometric Sensors for Hydrogen Peroxide Based on Melanin-Capped Fe³⁺-, Cu²⁺-, or Ni²⁺-Modified Prussian Blue Nanoparticles

et al. 2015

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“…A primeira refere-se ao estiramento Fe-CN, e a segunda é atribuída às vibrações C≡N (Mažeikienė et al, 2011).…”

Section: Resultsunclassified

Novos Filmes De Nanocompósitos Entre Óxido De Grafeno Reduzido E Azul Da Prússia Obtidos Pelo Método Interfacial

Souza¹,

Aquino²,

Pierettie³

et al. 2015

Anais Do Congresso Brasileiro De Engenharia Química Em Iniciação Científica - Cobeq IC 2015

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RESUMO -Neste trabalho sintetizaram-se materiais nanoestruturados do tipo óxido de grafeno reduzido/azul da Prússia pelo método interfacial, através de soluções bifásicas, no qual se obteve filmes homogêneos, que foram caracterizados por espectroscopia Raman, constatando bandas características de compostos de carbono, com hibridizações sp 2 e sp 3 , além de bandas relacionadas ao azul da Prússia, atestando a formação do material nanocompósito. A atividade redox do azul da Prússia também foi estudada, através da análise dos pares redox presentes nas medidas de voltametria cíclica, com a presença de quatro picos característicos do AP. A análise das imagens de microscopia eletrônica de varredura mostraram uma morfologia esférica das nanopartículas de AP, e que as mesmas estão dispostas entre as folhas de óxido de grafeno reduzido. INTRODUÇÃO GrafenoO grafeno (Figura 1), nome da monocamada de grafite e do mais recente alótropo de carbono, consiste em uma rede bidimensional constituída por uma estrutura hexagonal de átomos de carbono, com hibridização sp² e espessura monoatômica. Sendo assim, é considerado a unidade básica fundamental que forma as estruturas de outros materiais de carbono, como os fulerenos, nanotubos e fibras de carbono.Por suas propriedades únicas, o grafeno é considerado mais resistente que o diamante. Assim, podem-se citar propriedades destacadas para esse material, tais como a alta resistência mecânica, elevada transparência e flexibilidade. Além disso, é considerado um semicondutor de band gap zero, pois sua banda de valência "toca" a banda de condução, permitindo que o material tenha propriedades condutoras, mas difere de metais comuns por não possuir elétrons livres na banda de condução, visto isso apresenta certa condutividade elétrica. (Wang et al, 2010). Um dos métodos de síntese mais utilizados para o grafeno é a esfoliação das folhas de grafite por oxidação com utilização de ácidos e oxidantes fortes, como HNO 3 , KMnO 4 , H 2 O 2.

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“…Experimentally, both cases were observed with the use of in situ Raman spectroelectrochemistry. Electrooxidation of hydroquinone and ascorbic acid at electrode, modified with poly(toluidine blue), was found to occur at a modifier-solution interface ("metal-like electrocatalysis") [5], whereas same or related processes proceeded within the modifier layer, as it was shown for electrodes, modified with polyaniline [7,8], or poly(neutral red) [4], or Prussian blue [1] ("redox electrocatalysis").…”

Section: Introductionmentioning

confidence: 83%

“…These electrodes contain a thin layer of either organic or inorganic substance which is able to act as an electrocatalyst in electrochemical conversion of solution species. Among many electrocatalytic systems of this kind known, our recent examples relate to electrocatalytic reduction of hydrogen peroxide at Prussian blue-modified electrode [1,2], electrooxidation of ascorbic acid at the same electrode [3], and electrooxidation of some organic species at electrode, modified with redox mediator poly(neutral red) [4], poly(toluidine blue) [5], polyaniline or its derivatives [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Modeling of electrocatalysis at chemically modified electrodes: a combination of second-order and Michaelis-type chemical kinetics

2012

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The model presented accounts for the diffusion of a reactant and of charge carriers within the modifier layer placed at electrode surface, and redox interaction between reactant and an active center bearing charge carriers. The study extends our previous model by the use of a combination of two kinds of redox interaction-a simple chemical second-order reaction, and Michaelis-type redox reaction. Depending on relative increments from these two kinetic models, either linear, or hyperbolic dependencies of electric current on reactant concentration were obtained. The results obtained have been analyzed in terms of current-concentration interdependencies.

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Electrocatalytic reduction of hydrogen peroxide at Prussian blue modified electrode: An in situ Raman spectroelectrochemical study

Cited by 56 publications

References 30 publications

Nonenzymatic Amperometric Sensors for Hydrogen Peroxide Based on Melanin-Capped Fe³⁺-, Cu²⁺-, or Ni²⁺-Modified Prussian Blue Nanoparticles

Nonenzymatic Amperometric Sensors for Hydrogen Peroxide Based on Melanin-Capped Fe³⁺-, Cu²⁺-, or Ni²⁺-Modified Prussian Blue Nanoparticles

Novos Filmes De Nanocompósitos Entre Óxido De Grafeno Reduzido E Azul Da Prússia Obtidos Pelo Método Interfacial

Modeling of electrocatalysis at chemically modified electrodes: a combination of second-order and Michaelis-type chemical kinetics

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Electrocatalytic reduction of hydrogen peroxide at Prussian blue modified electrode: An in situ Raman spectroelectrochemical study

Cited by 56 publications

References 30 publications

Nonenzymatic Amperometric Sensors for Hydrogen Peroxide Based on Melanin-Capped Fe3+-, Cu2+-, or Ni2+-Modified Prussian Blue Nanoparticles

Nonenzymatic Amperometric Sensors for Hydrogen Peroxide Based on Melanin-Capped Fe3+-, Cu2+-, or Ni2+-Modified Prussian Blue Nanoparticles

Novos Filmes De Nanocompósitos Entre Óxido De Grafeno Reduzido E Azul Da Prússia Obtidos Pelo Método Interfacial

Modeling of electrocatalysis at chemically modified electrodes: a combination of second-order and Michaelis-type chemical kinetics

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Nonenzymatic Amperometric Sensors for Hydrogen Peroxide Based on Melanin-Capped Fe³⁺-, Cu²⁺-, or Ni²⁺-Modified Prussian Blue Nanoparticles

Nonenzymatic Amperometric Sensors for Hydrogen Peroxide Based on Melanin-Capped Fe³⁺-, Cu²⁺-, or Ni²⁺-Modified Prussian Blue Nanoparticles