Anodic oxidation of formaldehyde on Pt-modified SnO2 thin film electrodes prepared by a sol–gel method

Villullas, Hebe M.; Mattos-Costa, Flora I.; Nascente, P. A. P.; Bulhões, L.O.S.

doi:10.1016/j.electacta.2004.01.079

Cited by 61 publications

(40 citation statements)

References 32 publications

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“…Moreover, it can be employed as a small model molecule in studies of the electro-oxidation of large organic molecules [19]. Formaldehyde is also used in technologically important processes such as electroless copper plating and the textile industries, and thus its oxidation is relevant to waste water treatment [20]. Hence, in the past few years, many reports have been published on the oxidation of HCHO under a wide range of conditions and on various electrodes [13,[20][21][22][23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Electrocatalytic oxidation of formaldehyde on nickel modified ionic liquid carbon paste electrode as a simple and efficient electrode

2011

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Ionic liquid 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide was used to fabricate a new ionic liquid/carbon paste electrode (IL/CPE). The general behavior of this electrode was characterized by electrochemical impedance spectroscopy, cyclic voltammetry, and scanning electron microscopy. Results showed that the IL plays an important role in improving the conductivity, reversibility, and electron transfer rate of the electrode. Nickel-modified ionic liquid/carbon paste electrode (Ni/IL/CPE) was also constructed by immersion of the IL/CPE in 1.0 M nickel sulfate solution. IL showed significant effect on the accumulation of nickel species on the surface of the electrode. The Ni/IL/CPE was applied successfully to highly efficient (current density of 16.5 mA cm -2 ) electrocatalytic oxidation of formaldehyde in alkaline medium. Cyclic voltammetry and chronoamperometry techniques indicated that this electrode displays a considerable electrocatalytic activity toward the oxidation of formaldehyde. The effects of different scan rates and formaldehyde concentrations on the electrocatalytic activity of this modified electrode were investigated. Finally, the rate constant for chemical reaction between formaldehyde and redox sites of the electrode was calculated.

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Section: Introductionmentioning

confidence: 99%

Electrocatalytic oxidation of formaldehyde on nickel modified ionic liquid carbon paste electrode as a simple and efficient electrode

2011

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“…Figure 11 (solid line) shows a typical cyclic voltammogram of the Pt/Nano-PDAN/MGCE during the adsorption and oxidation of bulk formaldehyde. The mechanism of formaldehyde electrooxidation has been investigated in the relevance literature [35][36][37][38]. Briefly, in the cyclic voltammogram during the forward potential sweep, an oxidation peak can be observed at 0.75 V (attributed to the superposition of currents generated by the oxidation of CO ads to CO 2 on the Pt surface, the intensively adsorbed species produced by the oxidation of formaldehyde and Pt).…”

Section: Electrocatalytic Oxidation Of Formaldehydementioning

confidence: 99%

Electrocatalytic oxidation of methanol onto platinum particles decorated nanostructured poly (1,5-diaminonaphthalene) film

Raoof

Ojani

Hosseini

2012

J Solid State Electrochem

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In this work, platinum particles decorated nanostructured poly (1,5-diaminonaphthalene) modified glassy carbon electrode (Pt/Nano-PDAN/MGCE) is prepared. The composite catalysts are characterized by scanning electron microscopy, energy dispersive spectroscopy, and electrochemical methods. The electrochemical methanol oxidation reaction is studied at the surface of this modified electrode. At same Pt loading, the Pt/Nano-PDAN/MGCE can act as higher efficient catalyst for methanol oxidation than that Pt/MGCE. Then, the influence of some parameters such as potential scan rates, switching potential, and methanol concentration on its oxidation as well as long-term stability of the modified electrode have studied by electrochemical methods. Also, ability of the modified electrode toward electrocatalytic oxidation of formaldehyde as an intermediate in methanol oxidation has been investigated.

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“…Some attempts were reported to develop HCHO sensors due to its electrochemical activity with Pt, Ru, and Au electrocatalysts [4][5][6][7][8]. The electric polyaniline supporting nano-Pt and Pd were involved to develop HCHO fuel cell [4,[9][10][11][12][13][14][15]. Formaldehyde oxidation scheme was recently reported on Pt single crystals which involved adsorbed intermediates of CO ad , H 2 COO ad , and HCOOH (Scheme 1) [16,17].…”

Section: Introductionmentioning

confidence: 98%

Preparation of platinum nanoparticles on polyaniline-coat multi-walled carbon nanotubes for adsorptive stripping voltammetric determination of formaldehyde in aqueous solution

Jin

Peng

2009

J Appl Electrochem

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Platinum nanoparticles on polyaniline-coat multi-walled carbon nanotubes were fabricated by electrochemical method at paraffin-impregnated graphite electrode (Pt/PAN/MWCNTs). The material was characterized by various methods including field emission scanning electron microscope (FE-SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and electrochemical techniques. The electrode has been effectively applied toward formaldehyde (HCHO) sensing. A good linear response curves from 1 9 10 -9 to 1 9 10 -3 M can be obtained with a lower detection limit of 4.6 9 10 -11 M (S/N 3). The successful preparation of nanocomposites opens a new path to fabricate the promising sensor for HCHO.

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Anodic oxidation of formaldehyde on Pt-modified SnO2 thin film electrodes prepared by a sol–gel method

Cited by 61 publications

References 32 publications

Electrocatalytic oxidation of formaldehyde on nickel modified ionic liquid carbon paste electrode as a simple and efficient electrode

Electrocatalytic oxidation of formaldehyde on nickel modified ionic liquid carbon paste electrode as a simple and efficient electrode

Electrocatalytic oxidation of methanol onto platinum particles decorated nanostructured poly (1,5-diaminonaphthalene) film

Preparation of platinum nanoparticles on polyaniline-coat multi-walled carbon nanotubes for adsorptive stripping voltammetric determination of formaldehyde in aqueous solution

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