Shape-Controlled Synthesis of Dumbbell-like Pt–Fe3O4–MnOx Nanoparticles by Governing the Reaction Kinetics
SCOPUS
- Title
- Shape-Controlled Synthesis of Dumbbell-like Pt–Fe3O4–MnOx Nanoparticles by Governing the Reaction Kinetics
- Authors
- Woo, Hyunje; Park, Junha; Yun, Su-Won; Park, Ji Chan; Park, Sungkyun; Kim, Yong-Tae; Park, Kang Hyun
- Date Issued
- 2017-11
- Publisher
- 1155 16TH ST, NW, WASHINGTON, USA, DC, 20036
- Abstract
- The production of shape-controlled hetero-metallic nanoparticles (NPs) consisting of Pt and nonprecious metal oxides is crucial to demonstrate the composition-property relationship of NPs. Herein, we report a facile onepot approach for the controlled synthesis of dumbbell-like Pt-Fe3O4-MnOx and dendritic Pt-MnOx NPs. The key to the success of this synthesis is in changing the quantity of Fe(CO)(5) additive to control the reaction kinetics. In the absence of Fe(CO)(5), dendritic Pt-MnOx NPs were synthesized through the assembly of small seed NPs. On the other hand, dumbbell-like Pt-Fe3O4-MnOx NPs were obtained in the presence of Fe(CO)(5) through controlling the nucleation and growth of Fe and Mn on the Pt NPs, followed by air oxidation. Compared to a Pt/graphene oxide (GO) catalyst, dumbbell-like Pt-Fe3O4-MnOx NPs on GO showed an enhancement of specific activity toward the oxygen reduction reaction owing to the compressive-strain effect exerted on the Pt lattice.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/103100
- DOI
- 10.1021/acsomega.7b01366
- ISSN
- 2470-1343
- Article Type
- Article
- Citation
- ACS OMEGA, vol. 2, no. 11, page. 8483 - 8489, 2017-11
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- There are no files associated with this item.
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