title: Chemical-reaction-induced hot electron flows on platinum colloid nanoparticles under hydrogen oxidation: impact of nanoparticle size.
abstract: Generation of hot electron flows and the catalytic activity of Pt nanoparticles (NPs) with different sizes were investigated using catalytic nanodiodes. We show that smaller Pt NPs lead to higher chemicurrent yield, which is associated with the shorter travel length for the hot electrons, compared with their inelastic mean free path. We also show the impact of capping on charge carrier transfer between Pt NPs and their support.
authors: Center for Nanomaterials and Chemical Reactions, Institute for Basic Science, Daejeon 305-701 (Korea); Graduate School of EEWS, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701 (Korea).
authors: Hyosun
authors: H
authors: Lee
authors: Ievgen I
authors: II
authors: Nedrygailov
authors: Changhwan
authors: C
authors: Lee
authors: Gabor A
authors: GA
authors: Somorjai
authors: Jeong Young
authors: JY
authors: Park
keywords: catalytic nanodiodes; hot electrons; hydrogen oxidation; nanoparticles; platinum