The effect of Ni addition on the structure of Pt–Sn/C nanoparticles by electron microscopy
- Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University, 34469 Maslak, İstanbul (Turkey)
- Electrocatalysis Group, IC2MP, UMR 7285, CNRS, Université de Poitiers, 40 avenue du Recteur Pineau, 86022 Poitiers Cedex (France)
Highlights: • A typical Pt/SnO{sub 2} core–shell structure is present in Pt–Sn. • The most of SnO{sub 2} species are likely clustered in Pt–Sn. • SnO{sub 2} nanoparticles prefer to locate close to Pt–Sn–Ni nanoclusters. • Main crystallographic structures are either cubic Pt or PtSn{sub 2}. - Abstract: Carbon supported bimetallic Pt–Sn and trimetallic Pt–Sn–Ni nanoparticles were synthesized by Bönnemann's colloidal precursor method and characterized by high-resolution transmission electron microscopy (HR-TEM) and energy dispersive X-ray analysis (EDX) techniques. HR-TEM and EDX results demonstrated that SnO{sub 2} nanoparticles tend to form clusters in Pt–Sn/C; however, the presence of Ni in the Pt–Sn/C gives rise to an induced interaction between SnO{sub 2} and Pt nanoparticles. Electron diffraction patterns of Pt–Sn–Ni/C showed that either cubic Pt or PtSn{sub 2} structures are present. From the selected area EDX analysis, it was found that both of these structures contain Sn. This suggests that Pt–Sn–Ni/C nanoparticles may be partially covered by Sn-richer PtSn{sub 2} alloyed structure.
- OSTI ID:
- 22345241
- Journal Information:
- Materials Research Bulletin, Vol. 50; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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