PtRu/C Electrocatalysts Prepared Using Gamma and Electron Beam Irradiation for Methanol Electrooxidation

Author(s)

Silva, Dionisio F. ^[1] ; Geraldes, Adriana N. ^[1] ; Pino, Eddy S. ^[1] ; Oliveira Neto, Almir ^[1] ; Linardi, Marcelo ^[1] ; Spinace, Estevam V. ^[1]

Affiliation

^[1] IPEN CNEN, Inst Pesquisas Energet & Nucl, BR-05508000 Sao Paulo - Brazil

• Document type: Journal article
• Source: Journal of Nanomaterials; 2012.
• Web of Science Citations: 1

Abstract

PtRu/C electrocatalysts (carbon-supported PtRu nanoparticles) were prepared in a single step submitting water/2-propanol mixtures containing Pt(IV) and Ru(III) ions and the carbon support to gamma and electron beam irradiation. The electrocatalysts were characterized by energy dispersive X-ray analysis (EDX), X-ray diffraction (XRD), transmission electron microscopy (TEM), and cyclic voltammetry and tested for methanol electrooxidation. PtRu/C electrocatalyst can be prepared in few minutes using high dose rate electron beam irradiation while using low dose rate gamma irradiation some hours were necessary to prepare it. The obtained materials showed the face-centered cubic (fcc) structure of Pt and Pt alloys with average nanoparticle sizes of around 3 nm. The material prepared using electron beam irradiation was more active for methanol electrooxidation than the material prepared using gamma irradiation. (AU)

• FAPESP's process: 07/08724-7 - Preparation of PtRu/C and PtSn/C electrocatalysts using electron beam for application as anode in direct alcohol fuel cell
• Grantee: Estevam Vitorio Spinacé
• Support type: Regular Research Grants