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Do, Jing-Shan; Wu, Kanq-Jiuan

doi:10.1023/a:1017571817734

Cited by 7 publications

(3 citation statements)

References 15 publications

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“…No reduction peak appears and this indicates that NO electrooxidation at the GC electrode is irreversible. Results show that NO is oxidized at the GC electrode and the oxidation reaction equation is likely to be NO + 2OH − → HNO 3 + H + + 3e − [56,57]. It is further demonstrated by ion chromatography.…”

Section: No Electrooxidation At Different Electrodesmentioning

confidence: 82%

Amidation of single-walled carbon nanotubes by a hydrothermal process for the electrooxidation of nitric oxide

Kan

Xia

et al. 2009

Nanotechnology

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Single-walled carbon nanotubes (SWCNTs) have been amidated by hydrothermal treatment with different aliphatic amines. The amido groups modified on the surface of the SWCNTs were characterized by Fourier transform infrared spectroscopy. The electrooxidation of nitric oxide (NO) at the modified electrodes of amidated SWCNTs was investigated. The modified electrodes of amidated SWCNTs exhibited different electrocatalytic activity for NO when different aliphatic amines were being used. The electrode amidated by ammonia has the highest activity, which is 1.8 times value of the SWCNT modified electrode. The electrocatalytic activity of the amidated SWCNT modified electrodes depends on the length of the alkyl groups. The results demonstrate that hydrothermal treatment is an efficient way to modify SWCNTs with amines, and the reaction rate of NO electrooxidation can be changed by the amidation of SWCNTs.

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Section: No Electrooxidation At Different Electrodesmentioning

confidence: 82%

Amidation of single-walled carbon nanotubes by a hydrothermal process for the electrooxidation of nitric oxide

Kan

Xia

et al. 2009

Nanotechnology

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“…According to the results of figure 6, NO -2 is the intermediate and NO -3 is the only product. The overall oxidation reaction of NO (as shown in scheme 1) is summed up in the equation 45,46 : NO + 2OH -→ HNO 3 + H + + 3e -.…”

Section: Mechanism Of No Electro-oxidation Reactionmentioning

confidence: 99%

Electrochemical investigation of NO at single-wall carbon nanotubes modified electrodes

Xia

Shi

2010

J Chem Sci

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The NO electro-oxidation was investigated at various single-wall carbon nanotubes (SWCNTs) modified electrodes by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Compared with the glassy carbon electrode, the SWCNTs modified electrodes possess higher electro-catalytic activity to NO electro-oxidation. CV results indicate that the peak current density of NO electro-oxidation at the SWCNT-COOH (SWCNTs with carboxyl groups) modified electrode is the highest and the peak potential is the most negative among the four kinds of electrodes. EIS indicates that the charge transfer resistance of NO electro-oxidation at the SWCNT-COOH modified electrode is the least. The determined factors (charge transfer and mass transfer of diffusion) of NO electro-oxidation are different in varied potential region. The mechanism of NO electro-oxidation reaction at the SWCNTs modified electrodes is also discussed.

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“…? 3e - [37]. The effect of scan rate on the electrochemistry of NO at the GC electrode was investigated by cyclic voltammetry.…”

Section: Ftir Spectra Characterizationsmentioning

confidence: 99%

Functionalization of multi-walled carbon nanotube for electrocatalytic oxidation of nitric oxide

et al. 2009

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The multi-walled carbon nanotube (MWCNT) was functionalized with hydroxyl, carboxyl and amido groups on the surface. Electrocatalytic oxidation of nitric oxide (NO) at the MWCNT modified electrodes was investigated. It was found that the MWCNT modified electrode could speed up greatly the electron transfer rate compared with the glass carbon electrode, and there was an adsorptive step for the oxidation of NO at the MWCNT modified electrode. The activation energy of NO electrooxidation reaction at modified electrode of MWCNT treated by alkali and mixed acids (MWCNT-OH-COOH) decreased, and current density was almost two times that of the electrode modified with alkali treated MWCNT. The modified electrodes of MWCNT amidated with the aliphatic amines decreased the activation energy of NO oxidation compared with MWCNT modified electrode, but the reaction rate of amidated MWCNT electrodes decreased because of the steric effect. The results demonstrated that MWCNT-OH-COOH modified electrode is the best for NO electrocatalytic oxidation.

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Untitled

Cited by 7 publications

References 15 publications

Amidation of single-walled carbon nanotubes by a hydrothermal process for the electrooxidation of nitric oxide

Amidation of single-walled carbon nanotubes by a hydrothermal process for the electrooxidation of nitric oxide

Electrochemical investigation of NO at single-wall carbon nanotubes modified electrodes

Functionalization of multi-walled carbon nanotube for electrocatalytic oxidation of nitric oxide

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