Formation of Bi-Containing sea urchin-like Pt nanoparticles induced by the addition of bismuth element and their enhanced electrocatalytic properties for methanol oxidation
- Authors
- Lee, Kang Yeol; Lee, Young Wook; Kim, Tae Ho; Kim, Jineun
- Issue Date
- 1-Sep-2019
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- Bi-containing sea urchin-like Pt nanoparticles; Methanol oxidation; Electrocatalyst; Onset oxidation potential
- Citation
- MATERIALS CHEMISTRY AND PHYSICS, v.235
- Journal Title
- MATERIALS CHEMISTRY AND PHYSICS
- Volume
- 235
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/1145
- DOI
- 10.1016/j.matchemphys.2019.121758
- ISSN
- 0254-0584
- Abstract
- A facile method to synthesize Bi-containing sea urchin-like Pt nanoparticles is demonstrated. The morphology and chemical composition of the prepared Bi-containing sea urchin-like Pt nanoparticles were characterized using scanning electron microscopy, X-ray diffraction, transmission electron microscopy, and energy-dispersive X-ray spectroscopy. Electrochemical studies of the oxidation of methanol in an acidic medium using the Bicontaining sea urchin-like Pt nanoparticles were performed. The prepared nanoparticles exhibited enhanced electrocatalytic activity for methanol oxidation with a seven-fold higher oxidation current density and a more negative onset potential than commercial Pt/C (Pt 20%). Moreover, the current density of the Bi-containing sea urchin-like Pt nanoparticle/C catalysts was high even after 900 s of continuous electrocatalysis at 0.56 V. The synthesized Bi-containing sea urchin-like Pt nanoparticles should find attractive applications in various fields, such as fuel cells, sensors, and eletro- or organic catalysis.
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