Electrochemical oxidation of hydrazine derivatives by carbon-supported metalloporphyrins

Yamazaki, Shinichi; Ioroi, Tsutomu; Tanimoto, Kazumi; Yasuda, Kazuaki; Asazawa, Koichiro; Yamaguchi, Susumu; Tanaka, Hiroyuki

doi:10.1016/j.jpowsour.2011.12.056

Cited by 45 publications

(29 citation statements)

References 31 publications

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“…In order to detect low concentrations of hydrazine and to resolve the associated environmental issues, a suitable cost-effective electrocatalyst must be developed [6,7]. Recently, the determination of hydrazine has been reported using various modified electrodes such as gold nanoparticles supported on a TiO 2 nanotube [8], titanium-supported Ag electrode [9], metal electrodes [10], carbon nanotubes/NiFe alloys [11], carbon-supported metalloporphyrins [12], iridium [13], palladium-polyaniline nanocomposites [14], nickel-palladium nanoparticles [15], and Ni-Co alloy modified electrodes [16]. In addition, the electrochemical determination of hydrazine was also reported in in situ grown ceria nanoparticles over a reduced graphene oxide (RGO) modified electrode by Srivastava et al [17].…”

Section: Introductionmentioning

confidence: 99%

Preparation of reduced graphene oxide-NiFe 2 O 4 nanocomposites for the electrocatalytic oxidation of hydrazine

Uddin

Kim

Kuila

et al. 2015

Composites Part B: Engineering

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Section: Introductionmentioning

confidence: 99%

Preparation of reduced graphene oxide-NiFe 2 O 4 nanocomposites for the electrocatalytic oxidation of hydrazine

Uddin

Kim

Kuila

et al. 2015

Composites Part B: Engineering

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“…It has been shown that a Fe octaethylporphyrin exhibits slightly higher oxidation current of DAU than a Co octaethylporphyrin in the lower potential region from 0.4 V to 0.45 V, while the maximum oxidation current of DAU at 0.6 V with a Fe porphyrin is low. 11 These results suggest that Fe complexes are promising candidates as electrocatalysts for the low-potential oxidation of DAU. We concentrate on a Fe phthalocyanine (Fe-PC) complex.…”

mentioning

confidence: 92%

“…11,[22][23][24][25][26][27][28][29][30] It has been demonstrated that Rh porphyrins and Rh phthalocyanines adsorbed on a carbon black with a high surface area give a high oxidation current, since large amounts of molecules are dispersed on the carbon black. 11,[22][23][24][25][26][27][28][29][30] To obtain a high oxidation current, we also adsorbed Fe-PC molecules on a carbon black. Another advantage of carbon-supported metallocomplexes is that they can be incorporated into a membrane-electrode assembly by a conventional method.…”

mentioning

confidence: 99%

Fe Phthalocyanine-Based Catalyst for the Electro-Oxidation ofN,N-Diaminourea and Hydrazine and Its Application in an Anion-Exchange Membrane Fuel Cell

Yamazaki

Asazawa²,

Tanaka³

et al. 2014

J. Electrochem. Soc.

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We present a carbon-supported iron phthalocyanine catalyst for the electro-oxidation of N,N-diaminourea (DAU), a hydrazine derivative. This catalyst can oxidize DAU, which is scarcely oxidized by conventional metal electrodes. The onset potential reaches 0.3 V vs. a reversible hydrogen electrode, and the oxidation current of DAU is comparable to that of hydrazine. The activity of Co phthalocyanine was also examined; the Fe phthalocyanine catalyst exhibited a higher oxidation current for DAU than the Co phthalocyanine catalyst. The dependence of the activity on the concentration of DAU suggests that DAU forms a complex with Fe phthalocyanine. Based on this concentration-dependence and an HPLC (high performance liquid chromatography) analysis of DAU hydrolysis, it was shown that hydrolysis of DAU in an electrolyte solution does not significantly affect the electro-oxidation of DAU by a carbon-supported Fe phthalocyanine. We made an anion-exchange membrane fuel cell that incorporates Fe phthalocyanine as an anode catalyst. This cell delivered considerable electricity when DAU was supplied as a fuel (open circuit potential: 0.59 V, short circuit current: 69 mAcm −2 at room temperature). For the realization of a fuel cell vehicle (FCV), the storage of H 2 is a very important problem that has to be overcome. To attain the high volumetric energy density that is needed for FCVs, H 2 has to be contained in a cylinder up to a very high pressure (> at least 35 MPa). The high-pressure H 2 in a cylinder is difficult to handle. Furthermore, the cylinder occupies a large volume on board of FCV, and the weight of the cylinder itself decreases the total energy density of the fuel.Liquid fuels with a high energy density are attractive options to overcome the drawbacks of H 2 , since such fuels should be easier to handle. To date, a wide variety of direct liquid-feed fuel cells, such as direct alcohol fuel cells and direct borohydride fuel cells, have been investigated for use in FCVs. Among them, a direct hydrazine fuel cell is one of the most promising fuel cells for use in FCVs. [1][2][3][4][5][6][7][8][9] Hydrazine (N 2 H 4 ), which has low molecular weight, undergoes 4e-oxidation at the anode of direct hydrazine fuel cells. Therefore, a direct hydrazine fuel cell has a high energy density. Hydrazine has high reactivity, and hence should undergo facile electro-oxidation on a wide variety of catalysts. Asazawa et al. reported a direct hydrazine fuel cell that delivers high power density. 6 This fuel cell uses an anion-exchange membrane as an electrolyte. Therefore, less expensive materials can be used in fuel cells of this type. In that report, high power was attained using Ni (anode) and Co polypyrrol (cathode). Thus, direct hydrazine fuel cells are favorable with regard to energy density, power density and the use of non-noble metal catalysts. However, there is some concern regarding the possible toxicity of hydrazine hydrate. To counteract the toxicity of hydrazine hydrate, derivatives of hydrazine, such as N,N-diaminourea (...

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“…Co(III)/Co(II), Fe(III)/Fe(II), Mn(III)/Mn (II)), they are especially useful as electrochemical sensors [5]. Electrodes modified with metalloporphyrinoids act as efficient redox mediators to reduce nitrites [6], oxidate hydrazines [7][8][9], thiols [10], as well as in the reduction of oxygen and hydrogen peroxide [11,12]. Hydrazine is known as a strong reducing agent that has been widely applied in industry, especially for rocket fuel production, in hydrazine fuel cells, in catalysts and pharmaceuticals [9,[13][14][15].…”

Section: Introductionmentioning

confidence: 99%

“…Electrodes modified with metalloporphyrinoids act as efficient redox mediators to reduce nitrites [6], oxidate hydrazines [7][8][9], thiols [10], as well as in the reduction of oxygen and hydrogen peroxide [11,12]. Hydrazine is known as a strong reducing agent that has been widely applied in industry, especially for rocket fuel production, in hydrazine fuel cells, in catalysts and pharmaceuticals [9,[13][14][15]. Hence, the electrooxidation of hydrazine is a very important process in the field of electrocatalysis (fuel cells), as well as in electrochemical sensors [8,9,15,16].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical properties of metallated porphyrazines possessing isophthaloxybutylsulfanyl substituents: Application in the electrocatalytic oxidation of hydrazine

Rębiś

Lijewski

Nowicka

et al. 2015

Electrochimica Acta

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Electrochemical oxidation of hydrazine derivatives by carbon-supported metalloporphyrins

Cited by 45 publications

References 31 publications

Preparation of reduced graphene oxide-NiFe 2 O 4 nanocomposites for the electrocatalytic oxidation of hydrazine

Preparation of reduced graphene oxide-NiFe 2 O 4 nanocomposites for the electrocatalytic oxidation of hydrazine

Fe Phthalocyanine-Based Catalyst for the Electro-Oxidation ofN,N-Diaminourea and Hydrazine and Its Application in an Anion-Exchange Membrane Fuel Cell

Electrochemical properties of metallated porphyrazines possessing isophthaloxybutylsulfanyl substituents: Application in the electrocatalytic oxidation of hydrazine

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