Effect of MgO coverage on the synthesis and thermal treatment of Pt-Sn/C catalysts

Author(s)

Santos, Nathalia A. ^[1] ; Corradini, Patricia G. ^[1] ; Antolini, Ermete ^[2] ; Perez, Joelma ^[1]

Affiliation

^[1] Univ Sao Paulo, Sao Carlos Inst Chem, BR-13560970 Sao Paulo - Brazil

^[2] Scuola Sci Mat, Via 25 Aprile 22, I-16016 Genoa - Italy

• Document type: Journal article
• Source: Materials Letters; v. 244, p. 6-9, JUN 1 2019.
• Web of Science Citations: 0

Abstract

To prevent sintering of carbon supported metal nanoparticles during high temperature annealing in reductive conditions, Pt-Sn nanoparticles were coated with MgO. The agglomeration of Pt-Sn particles upon thermal annealing was significantly inhibited with a MgO shell. The presence of the oxide shell gave rise to a more homogeneous microstructure and a better electrochemical stability. (C) 2019 Elsevier B.V. All rights reserved. (AU)

• FAPESP's process: 12/12189-8 - Investigation of platinum-rare earth nanocatalysts supported in carbon for direct ethanol fuel cells
• Grantee: Patricia Gon Corradini
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 13/16930-7 - Electrocatalysis V: electrocatalytic processes of chemical and electrical energy interconversion
• Grantee: Edson Antonio Ticianelli
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 13/17549-5 - Study of variations of physico-chemical properties of Nd-Pt/C and Pt-Nd-Sn/C for the ethanol electro-oxidation.
• Grantee: Nathalia Abe Santos
• Support Opportunities: Scholarships in Brazil - Doctorate