The DOI matches its Crossref record; 4 of the 4 references it cites were found in a registry or an index.
Chemical and Electronic Effects of Ni in Pt/Ni and Pt/Ru/Ni Alloy Nanoparticles in Methanol Electrooxidation
Abstract
Electrooxidation of methanol in sulfuric acid solution was studied using Pt, Pt/Ni(1:1 and 3:1), Pt/Ru/Ni(5:4:1 and 6:3.5:0.5), and Pt/Ru(1:1) alloy nanoparticle catalysts, in relation to methanol oxidation processes in the direct oxidation methanol fuel cell. The Pt/Ni and Pt/Ru/Ni alloys showed excellent catalytic activities compared to those of pure Pt and Pt/Ru. The role of Ni as a catalytically enhancing agent in the oxidation process was interrogated using cyclic voltammetry, chronoamperometry, X-ray photoelectron spectroscopy, transmission electron microscopy, and X-ray diffraction. X-ray diffraction data showed alloy formation for all Pt/Ni, Pt/Ru/Ni, and Pt/Ru nanoparticles, whereas X-ray photoelectron spectroscopy confirmed that chemical states of Pt were exclusively metallic. The presence of metallic Ni, NiO, Ni(OH) 2, NiOOH, metallic Ru, RuO 2, and RuO 3 was also confirmed. We found that the Pt 4f binding energies for the Pt/Ni and Pt/Ru/Ni alloy nanoparticles were lower than those for clean Pt nanoparticles. The oxides that serve as the oxygen donors for the oxidation process, and the change in the electronic structure of the Pt component in the alloys versus those in Pt and Pt/Ru collectively account, we believe, for enhancement in rates of methanol oxidation. The difference in the peak shift in Pt 4f between Pt/Ni and Pt/Ru alloy nanoparticles is discussed by using electronegativities of the three components: Pt, Ru, and Ni. A comparison between the alloy nanoparticle composition and that of disk alloy electrodes under similar conditions was made in terms of the surface-to-volume ratio and surface segregation of the alloying components.
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Citations
Cites
Methanol oxidation and direct methanol fuel cells: a selective review
Wasmus, S., & Küver, A. (1999) · Journal of Electroanalytical Chemistry · doi:10.1016/s0022-0728(98)00197-1 · Cited by 1,308
Mukerjee, S., Srinivasan, S., Soriaga, M. P., & McBreen, J. (1995) · The Journal of Physical Chemistry · doi:10.1021/j100013a032 · Cited by 439
In Situ X‐Ray Absorption Studies of a Pt‐Ru Electrocatalyst
McBreen, J., & Mukerjee, S. (1995) · Journal of The Electrochemical Society · doi:10.1149/1.2049993 · Cited by 242
Intraalloy electron transfer and catalyst performance: a spectroscopic and electrochemical study
Goodenough, J. B., Manoharan, R., Shukla, A. K., & Ramesh, K. V. (1989) · Chemistry of Materials · doi:10.1021/cm00004a003 · Cited by 114
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Jun, Y., Choi, J., & Cheon, J. (2006) · Angewandte Chemie International Edition · doi:10.1002/anie.200503821 · Cited by 1,123
Self-citationAntolini, E., Salgado, J. R. C., & Gonzalez, E. R. (2006) · Journal of Power Sources · doi:10.1016/j.jpowsour.2006.03.006 · Cited by 503
Zhang, Z., Liu, J., Gu, J., Su, L., & Cheng, L. (2014) · Energy Environ. Sci. · doi:10.1039/c3ee43886d · Cited by 478
Xu, D., Liu, Z., Yang, H., Liu, Q., Zhang, J., Fang, J., Zou, S., & Sun, K. (2009) · Angewandte Chemie International Edition · doi:10.1002/anie.200900293 · Cited by 385
Ni1-xPtx (x = 0−0.12) Hollow Spheres as Catalysts for Hydrogen Generation from Ammonia Borane
Cheng, F., Ma, H., Li, Y., & Chen, J. (2007) · Inorganic Chemistry · doi:10.1021/ic061712e · Cited by 349
Metadata
- Authors
- Park, K.-W., Choi, J.-H., Kwon, B.-K., Lee, S.-A., Sung, Y.-E., Ha, H.-Y., Hong, S.-A., Kim, H., & Wieckowski, A.
- Venue
- The Journal of Physical Chemistry B
- Publisher
- American Chemical Society (ACS)
- Published
- 2002-02-01
- Volume
- 106
- Issue
- 8
- Pages
- 1869-1877
- ISSN
- 1520-5207 (ISSN-L)
- 1520-6106
- OpenAlex
- W2039453064
- Cited by
- 845
- References
- 4
- FWCI
- 22.00
- Type
- journal article
- Language
- en
- Open access
- closed
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- Park, K.-W., Choi, J.-H., Kwon, B.-K., Lee, S.-A., Sung, Y.-E., Ha, H.-Y., Hong, S.-A., Kim, H., & Wieckowski, A. (2002). Chemical and Electronic Effects of Ni in Pt/Ni and Pt/Ru/Ni Alloy Nanoparticles in Methanol Electrooxidation. The Journal of Physical Chemistry B. https://doi.org/10.1021/jp013168v
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