The DOI matches its Crossref record; 11 of the 11 references it cites were found in a registry or an index.
Atomic Layer-by-Layer Deposition of Platinum on Palladium Octahedra for Enhanced Catalysts toward the Oxygen Reduction Reaction
Abstract
We systematically evaluated two different approaches to the syntheses of Pd@PtnL (n = 2-5) core-shell octahedra. We initially prepared the core-shell octahedra using a polyol-based route by titrating a Pt(IV) precursor into the growth solution containing Pd octahedral seeds at 200 °C through the use of a syringe pump. The number of Pt atomic layers could be precisely controlled from two to five by increasing the volume of the precursor solution while fixing the amount of seeds. We then demonstrated the synthesis of Pd@PtnL octahedra using a water-based route at 95 °C through the one-shot injection of a Pt(II) precursor. Due to the large difference in reaction temperature, the Pd@PtnL octahedra obtained via the water-based route showed sharper corners than their counterparts obtained through the polyol-based route. When compared to a commercial Pt/C catalyst based upon 3.2 nm Pt particles, the Pd@PtnL octahedra prepared using both methods showed similar remarkable enhancement in terms of activity (both specific and mass) and durability toward the oxygen reduction reaction. Calculations based upon periodic, self-consistent density functional theory suggested that the enhancement in specific activity for the Pd@PtnL octahedra could be attributed to the destabilization of OH on their PtnL*/Pd(111) surface relative to the {111} and {100} facets exposed on the surface of Pt/C. The destabilization of OH facilitates its hydrogenation, which was found to be the rate-limiting step of the oxygen reduction reaction on all these surfaces.
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Cites
Origin of the Overpotential for Oxygen Reduction at a Fuel-Cell Cathode
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Improved Oxygen Reduction Activity on Pt 3 Ni(111) via Increased Surface Site Availability
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Synthesis and Oxygen Reduction Activity of Shape-Controlled Pt3Ni Nanopolyhedra
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Recent Advances in Electrocatalysts for Oxygen Reduction Reaction
Shao, M., Chang, Q., Dodelet, J.-P., & Chenitz, R. (2016) · Chemical Reviews · doi:10.1021/acs.chemrev.5b00462 · Cited by 3,903
Platinum-based nanocages with subnanometer-thick walls and well-defined, controllable facets
Zhang, L., Roling, L. T., Wang, X., Vara, M., Chi, M., Liu, J., Choi, S.-I., Park, J., Herron, J. A., Xie, Z., et al. (2015) · Science · doi:10.1126/science.aab0801 · Cited by 981
Self-citationAdvanced Electrocatalysts for the Oxygen Reduction Reaction in Energy Conversion Technologies
Tian, X., Lu, X. F., Xia, B. Y., & Lou, X. W. (. (2020) · Joule · doi:10.1016/j.joule.2019.12.014 · Cited by 903
Surface and Interface Control in Nanoparticle Catalysis
Xie, C., Niu, Z., Kim, D., Li, M., & Yang, P. (2020) · Chemical Reviews · doi:10.1021/acs.chemrev.9b00220 · Cited by 864
Seed‐Mediated Growth of Colloidal Metal Nanocrystals
Xia, Y., Gilroy, K. D., Peng, H., & Xia, X. (2017) · Angewandte Chemie International Edition · doi:10.1002/anie.201604731 · Cited by 800
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Metadata
- Authors
- Park, J., Zhang, L., Choi, S.-I., Roling, L. T., Lu, N., Herron, J. A., Xie, S., Wang, J., Kim, M. J., Mavrikakis, M., & Xia, Y.
- Venue
- ACS Nano
- Publisher
- American Chemical Society (ACS)
- Published
- 2015-02-16
- Volume
- 9
- Issue
- 3
- Pages
- 2635-2647
- ISSN
- 1936-0851 (ISSN-L)
- 1936-086X
- OpenAlex
- W2078466759
- Cited by
- 225
- References
- 11
- FWCI
- 11.83
- Type
- journal article
- Language
- en
- Open access
- closed
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