Particle size effect of carbon-supported platinum catalysts for the electrooxidation of methanol

On the role of Ru and Sn as promotors of methanol electro-oxidation over Pt

“…However, we found [26] that the specific activity of carbon supported Pt for the methanol oxidation remains constant for Pt sizes down to about 4 nm and that below that value the specific activity decreases with smaller particles. We attributed this to the much stronger water activation by the smaller particles at low potentials, resulting in a thwarting of the methanol adsorption reaction.…”

The correlation of electrochemical and fuel cell results for alcohol oxidation in acidic and alkaline media

“…The electronic properties of metal particles, especially in the size range from 2-10 nm, are interesting for fuel cell related reactions such as methanol oxidation [124][125][126] and the oxygen reduction reaction (ORR) [126,127]. Decreasing the particle diameter increases the binding energy of adsorbents such as H, CO and OH [128] causing changes in oxidation processes on the catalyst.…”

Structural and electronic properties of the Ptn–PAH complex (n = 1, 2) from density functional calculations

“…In direct methanol fuel cells (DMFC) and proton exchange membrane fuel cells (PEMFC), Pt nanoparticles supported on carbon materials are used as an electrode catalyst for both hydrogen oxidation at the anode and oxygen reduction at the cathode 17,18 . The ultimate goal is to control the size and shape of the metallic particle to promote the catalytic activity, and thereby reduce costs and prolong device lifetimes [19][20][21][22][23][24][25] . To improve catalytic activity, graphene may play an important role by stabilizing the metal nanoparticles on the surface.…”