Development of bimetallic nanoparticles and their electro catalytic activity
Chetna M Zaveri
In the present study methanol permeability was carried out using a diaphragm diffusion cell, consisting of two reservoirs separated by an electrolyte membrane with a dense layer of composite membranes to reproduce a phenomenon of methanol crossover in DMFC system. The results revealed that it is possible to synthesize Pt-Ni, Pt- Pu AND Pt- Mo nanoparticles of ~3–8 nm in diameter at temperatures of about 30°C. The catalytic properties of the bimetallic PtBi and PtPb nanoparticles were studied and compared with monometallic platinum nanoparticles. Firstly, the electrochemical oxidation of formic acid to carbon monoxide was investigated, and it was found that the resistance of the PtBi and PtPb nanoparticles against the catalyst-poisoning carbon monoxide was significantly higher compared to the Pt nanoparticles. Comparing the two bimetallic nanoparticles, one sees that the PtPb NPs are significantly more active than the respective PtBi NPs.