DOI: 10.1002/elan.200302970. Electrocatalytic Reduction of Oxygen at Multi‐Walled Carbon Nanotubes and Cobalt Porphyrin Modified Glassy Carbon Electrode

Electrocatalytic Reduction of Oxygen at Multi‐Walled Carbon Nanotubes and Cobalt Porphyrin Modified Glassy Carbon Electrode

10.1002/elan.200302970

Crossref journal-article

Wiley

Electroanalysis (311)

Abstract

AbstractThe multi‐walled carbon nanotubes (MWNTs) modified glassy carbon electrode exhibited electrocatalytic activity to the reduction of oxygen in 0.1 M HAc‐NaAc (pH 3.8) buffer solution. Further modification with cobalt porphyrin film on the MWNTs by adsorption, the resulted modified electrode showed more efficient catalytic activity to O2 reduction. The reduction peak potential of O2 is shifted much more positively to 0.12 V (vs. Ag/AgCl), and the peak current is increased greatly. Cyclic voltammetry (CV), transmission electron microscopy (TEM), X‐ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM), were used to characterize the material and the modified film on electrode surface. Electrochemical experiments gave the total number of electron transfer for oxygen reduction as about 3, which indicated a co‐exist process of 2 electrons and 4 electrons for reduction of oxygen at this modified electrode. Meanwhile, the catalytic activities of the multilayer film (MWNTs/CoTMPyP)n prepared by layer‐by‐layer method were investigated, and the results showed that the peak current of O2 reduction increased and the peak potential shifted to a positive direction with the increase of layer numbers.

Bibliography

Qu, J., Shen, Y., Qu, X., & Dong, S. (2004). Electrocatalytic Reduction of Oxygen at MultiâWalled Carbon Nanotubes and Cobalt Porphyrin Modified Glassy Carbon Electrode. Electroanalysis, 16(17), 1444â1450. Portico.

Authors 4

Jianying Qu (first)
Yan Shen (additional)
Xiaohu Qu (additional)
Shaojun Dong (additional)

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Dates

Type	When
Created	21 years, 2 months ago (June 2, 2004, 6:02 a.m.)
Deposited	1 year, 9 months ago (Nov. 16, 2023, 11:48 p.m.)
Indexed	2 months, 3 weeks ago (June 10, 2025, 2:48 a.m.)
Issued	21 years ago (Aug. 5, 2004)
Published	21 years ago (Aug. 5, 2004)
Published Online	21 years ago (Aug. 5, 2004)
Published Print	20 years, 11 months ago (Sept. 1, 2004)

Funders 0

None

BibTeX

@article{Qu_2004, title={Electrocatalytic Reduction of Oxygen at Multi‐Walled Carbon Nanotubes and Cobalt Porphyrin Modified Glassy Carbon Electrode}, volume={16}, ISSN={1521-4109}, url={http://dx.doi.org/10.1002/elan.200302970}, DOI={10.1002/elan.200302970}, number={17}, journal={Electroanalysis}, publisher={Wiley}, author={Qu, Jianying and Shen, Yan and Qu, Xiaohu and Dong, Shaojun}, year={2004}, month=aug, pages={1444–1450} }

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