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Nickel phthalocyanine-tetrasulfonic acid as a promoter of methanol electro-oxidation on Pt/C catalyst

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Abstract

This paper describes an investigation of the role of nickel phthalocyanine-tetrasulfonic acid (NiPcTs) for methanol electro-oxidation on a Pt/C catalyst. Cyclic voltammetry (CV) revealed that NiPcTs has no catalytic activity in methanol or CO electro-oxidation. However, methanol electro-oxidation occurs faster on a Pt/C catalyst modified with NiPcTs than on the original Pt/C catalyst. CO strip** results demonstrated that NiPcTs promotes electro-oxidation of adsorbed CO (COads) on the Pt/C catalyst, which is likely to be responsible for the enhancement of the methanol electro-oxidation rate. The promotion effect of NiPcTs is attributable to its ability to modify the electron density of the Pt surface. The electron deficiency of Pt0 in the NiPcTs-Pt/C catalyst is shown by the shift of the Pt0 4f peak to higher binding energies in the X-ray photoelectron spectrum.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (NSFC) under project number 20576106.

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Authors and Affiliations

  1. State Key Laboratory of Advanced Technology for Materials Synthesis and Progressing, Wuhan University of Technology, Wuhan, 430070, China

    Wentao Ma, **gjie Wu, Chunhui Shen, Haolin Tang & Mu Pan

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  1. Wentao Ma
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  2. **gjie Wu
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  3. Chunhui Shen
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  4. Haolin Tang
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  5. Mu Pan
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Correspondence to Mu Pan.

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Ma, W., Wu, J., Shen, C. et al. Nickel phthalocyanine-tetrasulfonic acid as a promoter of methanol electro-oxidation on Pt/C catalyst. J Appl Electrochem 38, 875–879 (2008). https://doi.org/10.1007/s10800-008-9529-z

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  • DOI: https://doi.org/10.1007/s10800-008-9529-z

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