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Nanostructured Porous Gold for Methanol Electro-Oxidation
Abstract
Dealloying single phase alloys is known to generate a type of nanostructured porous metals with intriguing properties. In this study, nanoporous gold (NPG) made by dealloying Au−Ag is investigated as a novel electrode material for methanol electro-oxidation. Compared to bulk Au electrode, oxidation and subsequent reduction of NPG occur at significantly negative potentials in both acid and alkaline solutions. NPG shows great catalytic activity for methanol electro-oxidation, but the structure quickly coarsens upon long time potential cycling. Interestingly, after surface modification with only a tiny amount of platinum, NPG exhibits greatly enhanced electrocatalytic activity toward methanol oxidation in the alkaline solutions, which is exemplified by a broad and high anodic peak during the positive scan and two secondary oxidation peaks in the subsequent reverse scan. At the same time, SEM observation and long-time potential cycling both prove that Pt−NPG has much enhanced structure stability as compared with bare NPG.
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Cites
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Bruins, H. J., van der Plicht, J., & Mazar, A. (2003) · Science · doi:10.1126/science.1082776 · Cited by 114
Cited by
Zhu, C., Du, D., Eychmüller, A., & Lin, Y. (2015) · Chemical Reviews · doi:10.1021/acs.chemrev.5b00255 · Cited by 672
Zhang, J., & Li, C. M. (2012) · Chemical Society Reviews · doi:10.1039/c2cs35210a · Cited by 527
Self-citationOn the Configuration of Supercapacitors for Maximizing Electrochemical Performance
Zhang, J., & Zhao, X. S. (2012) · ChemSusChem · doi:10.1002/cssc.201100571 · Cited by 527
Self-citationNanoporous gold: a new material for catalytic and sensor applications
Wittstock, A., Biener, J., & Bäumer, M. (2010) · Physical Chemistry Chemical Physics · doi:10.1039/c0cp00757a · Cited by 337
Porous Nanostructured Metals for Electrocatalysis
Guo, D., & Ding, Y. (2012) · Electroanalysis · doi:10.1002/elan.201200450 · Cited by 49
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Metadata
- Authors
- Zhang, J., Liu, P., Ma, H., & Ding, Y.
- Venue
- The Journal of Physical Chemistry C
- Publisher
- American Chemical Society (ACS)
- Published
- 2007-06-21
- Volume
- 111
- Issue
- 28
- Pages
- 10382-10388
- ISSN
- 1932-7447 (ISSN-L)
- 1932-7455
- OpenAlex
- W2024900996
- Cited by
- 352
- References
- 2
- FWCI
- 13.16
- Type
- journal article
- Language
- en
- Open access
- closed
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- Zhang, J., Liu, P., Ma, H., & Ding, Y. (2007). Nanostructured Porous Gold for Methanol Electro-Oxidation. The Journal of Physical Chemistry C. https://doi.org/10.1021/jp072333p
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
