The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Electrochemical Synthesis of Mesoporous Pt–Au Binary Alloys with Tunable Compositions for Enhancement of Electrochemical Performance
Abstract
Mesoporous Pt-Au binary alloys were electrochemically synthesized from lyotropic liquid crystals (LLCs) containing corresponding metal species. Two-dimensional exagonally ordered LLC templates were prepared on conductive substrates from diluted surfactant solutions including water, a nonionic surfactant, ethanol, and metal species by drop-coating. Electrochemical synthesis using such LLC templates enabled the preparation of ordered mesoporous Pt-Au binary alloys without phase segregation. The framework composition in the mesoporous Pt-Au alloy was controlled simply by changing the compositional ratios in the precursor solution. Mesoporous Pt-Au alloys with low Au content exhibited well-ordered 2D hexagonal mesostructures, reflecting those of the original templates. With increasing Au content, however, the mesostructural order gradually decreased, thereby reducing the electrochemically active surface area. Wide-angle X-ray diffraction profiles, X-ray photoelectron spectra, and elemental mapping showed that both Pt and Au were atomically distributed in the frameworks. The electrochemical stability of mesoporous Pt-Au alloys toward methanol oxidation was highly improved relative to that of nonporous Pt and mesoporous Pt films, suggesting that mesoporous Pt-Au alloy films are potentially applicable as electrocatalysts for direct methanol fuel cells. Also, mesoporous Pt-Au alloy electrodes showed a highly sensitive amperometric response for glucose molecules, which will be useful in next-generation enzyme-free glucose sensors.
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Cites
Hernández-Fernández, P., Rojas, S., Ocón, P., Gómez de la Fuente, J. L., San Fabián, J., Sanza, J., Peña, M. A., García-García, F. J., Terreros, P., & Fierro, J. L. G. (2007) · The Journal of Physical Chemistry C · doi:10.1021/jp066812k · Cited by 174
Cited by
Mesoporous materials and electrochemistry
Walcarius, A. (2013) · Chemical Society Reviews · doi:10.1039/c2cs35322a · Cited by 623
Synthesis and catalytic properties of bimetallic nanomaterials with various architectures
Liu, X., Wang, D., & Li, Y. (2012) · Nano Today · doi:10.1016/j.nantod.2012.08.003 · Cited by 538
Li, C., Li, Q., Kaneti, Y. V., Hou, D., Yamauchi, Y., & Mai, Y. (2020) · Chemical Society Reviews · doi:10.1039/d0cs00021c · Cited by 513
Self-citationRecent advances in porous Pt-based nanostructures: synthesis and electrochemical applications
Xu, Y., & Zhang, B. (2014) · Chemical Society Reviews · doi:10.1039/c3cs60351b · Cited by 503
Li, C., Tan, H., Lin, J., Luo, X., Wang, S., You, J., Kang, Y.-M., Bando, Y., Yamauchi, Y., & Kim, J. (2018) · Nano Today · doi:10.1016/j.nantod.2018.06.005 · Cited by 336
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Metadata
- Authors
- Yamauchi, Y., Tonegawa, A., Komatsu, M., Wang, H., Wang, L., Nemoto, Y., Suzuki, N., & Kuroda, K.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2012-03-06
- Volume
- 134
- Issue
- 11
- Pages
- 5100-5109
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2318593501
- Cited by
- 252
- References
- 1
- FWCI
- 11.18
- Type
- journal article
- Language
- en
- Open access
- closed
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