Electrooxidation of hydrazine catalyzed by noncovalently functionalized single-walled carbon nanotubes with CoPc

Geraldo, Daniela A.; Togo, Chamunorwa; Limson, Janice; Nyokong, Tebello

doi:10.1016/j.electacta.2008.05.083

Cited by 98 publications

(49 citation statements)

References 43 publications

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“…The catalytic oxidation of hydrazine through the use of various porphyrinoids has been mainly carried out in strong alkaline conditions [24][25][26]; whereas, the properties of such macrocycles in a neutral pH have been rarely studied [27]. Moreover, Pzs have up until now hardly been studied in the application in electrocatalysis or electrochemical sensors [24].…”

Section: Introductionmentioning

confidence: 98%

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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Section: Introductionmentioning

confidence: 98%

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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“…It has been demonstrated that electrodes modified with SWCNT show enhanced sensitivity for detection of analytes [20][21][22]. Metallophthalocyanines (MPc) have been used to functionalize SWCNT, covalently [23] or noncovalently (p-p interaction) [24], in order to improve the electron transfer process, in electrocatalysis.…”

Section: Introductionmentioning

confidence: 99%

Electrooxidation of Chlorophenols Catalyzed by Nickel Octadecylphthalocyanine Adsorbed on Single‐Walled Carbon Nanotubes

Khene

Nyokong

2011

Electroanalysis

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We described the synthesis of nickel octadecylphthalocyanine (NiPc(C 10 H 21 ) 8 ), followed by its adsorption on singlewalled carbon nanotubes (SWCNT) to form SWCNT-NiPc(C 10 H 21 ) 8 conjugates. SWCNT-NiPc(C 10 H 21 ) 8 was used to modify a glassy carbon electrode (GCE) and for the electrooxidation of 4-chlorophenol and 2,4-dichlorophenol. The SWCNT and NiPc(C 10 H 21 ) 8 have a synergistic effect on each other in terms of improving electrocatalysis for the detection of chlorophenols. The stability of the electrode improved in the presence of NiPc(C 10 H 21 ) 8 or NiPc compared to the bare GCE. The presence of SWCNT improves the electrocatalytic behaviour of NiPc(C 10 H 21 ) 8 but not of unsubstituted NiPc. All modified electrodes showed improved stability towards the detection of 2,4-dichlorophenol. The best stability for 4-CP detection was observed in the presence of SWCNT for NiPc(C 10 H 21 ) 8 .

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“…A lot of work has been done to modify various metal electrode surfaces for the dissociation of the NÀH bonds, OÀO bonds and the C-H bonds. Such metal electrodes include Pt, Au, Ni, Cu, Zn [10][11][12][13][14][15][16][17] and macrocyclic compounds electrode modifiers such as phthalocyanines [18,19] and porphyrins [20][21][22][23][24][25][26]. Other compounds such as Prussian blue [27], alizarin [28], g-MnOOH [16], and polyaniline [29] have been used for the electrooxidation of hydrazine and methanol and the electroreduction of molecular oxygen respectively.…”

Section: Introductionmentioning

confidence: 99%

Porphyrin Nanorods Modified Glassy Carbon Electrode for the Electrocatalysis of Dioxygen, Methanol and Hydrazine

et al. 2011

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Porphyrin nanorods (PNR) were prepared by ionic self-assembly of two oppositely charged porphyrin molecules consisting of free base meso-tetraphenylsulfonate porphyrin (H 4 TPPS 4 2À ) and meso-tetra(N-methyl-4-pyridyl) porphyrin (MTMePyP 4 + M = Sn, Mn, In, Co). ÀMnTMePyP 4 + porphyrin nanorods. The absorption spectra and transmission electron microscopic (TEM) images of these structures were obtained. These porphyrin nanostructures were used to modify a glassy carbon electrode for the electrocatalytic reduction of oxygen, and the oxidation of hydrazine and methanol at low pH. The cyclic voltammogram of PNR-modified GCE in pH 2 buffer solution has five irreversible processes, two distinct reduction processes and three oxidation processes. The porphyrin nanorods modified GCE produce good responses especially towards oxygen reduction at À0.50 V vs. Ag j AgCl (3 M KCl). The process of electrocatalytic oxidation of methanol using PNR-modified GCE begins at 0.71 V vs. Ag j AgCl (

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Electrooxidation of hydrazine catalyzed by noncovalently functionalized single-walled carbon nanotubes with CoPc

Cited by 98 publications

References 43 publications

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

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

Electrooxidation of Chlorophenols Catalyzed by Nickel Octadecylphthalocyanine Adsorbed on Single‐Walled Carbon Nanotubes

Porphyrin Nanorods Modified Glassy Carbon Electrode for the Electrocatalysis of Dioxygen, Methanol and Hydrazine

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