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Rh−Pt Bimetallic Catalysts: Synthesis, Characterization, and Catalysis of Core−Shell, Alloy, and Monometallic Nanoparticles
Abstract
Rh@Pt core-shell, RhPt (1:1) alloy, and Rh + Pt monometallic nanoparticles (NPs) were prepared using standard polyol reduction chemistry in ethylene glycol (EG) with standard inorganic salts and polyvinylpyrrolidine (PVP(55000)) stabilizers. PVP-free colloids were also prepared but less stable than the PVP-protected NPs. Rh@Pt core-shell particles were prepared from 2.7, 3.3, and 3.9 nm Rh cores with varying shell thicknesses (approximately 1 and approximately 2 ML). The particles were characterized by a combination of TEM, single-particle EDS, EDS line scans, XRD analysis, Debye Function simulations, FT-IR, and micro-Raman CO-probe experiments. The three different architectures were evaluated for preferential oxidation of CO in hydrogen (PROX) using 1.0 wt % Pt loadings in Al(2)O(3) supports. For hydrogen feeds with 0.2% CO and 0.5% O(2) the Rh@Pt NP catalyst has the best activity with complete CO oxidation at 70 degrees C and very high PROX selectivity at 40 degrees C with 50% CO conversion.
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Cited by
Preferential CO Oxidation in Hydrogen: Reactivity of Core−Shell Nanoparticles
Nilekar, A. U., Alayoglu, S., Eichhorn, B., & Mavrikakis, M. (2010) · Journal of the American Chemical Society · doi:10.1021/ja101108w · Cited by 280
Self-citationZhang, H., Jin, M., Liu, H., Wang, J., Kim, M. J., Yang, D., Xie, Z., Liu, J., & Xia, Y. (2011) · ACS Nano · doi:10.1021/nn202896q · Cited by 253
Liu, Z., Jackson, G. S., & Eichhorn, B. W. (2010) · Angewandte Chemie International Edition · doi:10.1002/anie.200907019 · Cited by 192
Self-citationWang, L., & Yamauchi, Y. (2010) · Chemistry – An Asian Journal · doi:10.1002/asia.201000496 · Cited by 72
Metadata
- Authors
- Alayoglu, S., & Eichhorn, B.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2008-12-24
- Volume
- 130
- Issue
- 51
- Pages
- 17479-17486
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2013174764
- Cited by
- 289
- References
- 0
- FWCI
- 7.24
- Type
- journal article
- Language
- en
- Open access
- closed
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- Alayoglu, S., & Eichhorn, B. (2008). Rh−Pt Bimetallic Catalysts: Synthesis, Characterization, and Catalysis of Core−Shell, Alloy, and Monometallic Nanoparticles. Journal of the American Chemical Society. https://doi.org/10.1021/ja8061425
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