TEM and EELS studies of microwave-irradiation synthesis of bimetallic platinum nanocatalysts

Electron Microscopy and Analysis Group Conference 2013

Mathe, N.R.^1,2 ; Coville, N.J.^2 ; Olivier, J.E.^3 ; Scriba, M.R.^1

National Centre for Nano-Structured Materials, CSIR, PO Box 395, Pretoria 0001, South Africa^1

Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Private Bag 3, Wits 2050, Johannesburg, South Africa^2

Centre for HRTEM, Nelson Mandela Metropolitan University, PO Box 77000, Port Elizabeth, 6031, South Africa^3

关键词: Bimetallic nanoparticles;    Conventional methods;    High-resolution TEM;    Methanol oxidation reactions;    Shape and size;    Uniform heating;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/522/1/012066/pdf
DOI  :  10.1088/1742-6596/522/1/012066

来源: IOP

【 摘 要 】

Microwave-irradiation (MW) synthesis of nanostructured materials provides for the synthesis of metal nanoparticles, using fast and uniform heating rates. This procedure affords better control of the shape and size of the nanoparticles when compared to conventional methods. In this work, microwave-irradiation was used to produce platinum-cobalt (Pt-Co) and platinum-nickel (Pt-Ni) nanoparticles for use as electrocatalysts in the methanol oxidation reaction. High resolution TEM imaging and EELS studies revealed that these bimetallic nanoparticles form islands or hetero-structures.