Chemical-reaction-induced hot electron flows on platinum colloid nanoparticles under hydrogen oxidation: Impact of nanoparticle size

Hyosun Lee; Ievgen I. Nedrygailov; Changhwan Lee; Gabor A. Somorjai; Jeong Young Park

doi:10.1002/anie.201410951

Chemical-reaction-induced hot electron flows on platinum colloid nanoparticles under hydrogen oxidation: Impact of nanoparticle size

Hyosun Lee, Ievgen I. Nedrygailov, Changhwan Lee, Gabor A. Somorjai, Jeong Young Park

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

55 Scopus citations

Abstract

(Figure Presented) 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.

Original language	English
Pages (from-to)	2340-2344
Number of pages	5
Journal	Angewandte Chemie - International Edition
Volume	54
Issue number	8
DOIs	https://doi.org/10.1002/anie.201410951
State	Published - 16 Feb 2015

Keywords

Catalytic nanodiodes
Hot electrons
Hydrogen oxidation
Nanoparticles
Platinum

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10.1002/anie.201410951

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title = "Chemical-reaction-induced hot electron flows on platinum colloid nanoparticles under hydrogen oxidation: Impact of nanoparticle size",

abstract = "(Figure Presented) 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.",

keywords = "Catalytic nanodiodes, Hot electrons, Hydrogen oxidation, Nanoparticles, Platinum",

author = "Hyosun Lee and Nedrygailov, {Ievgen I.} and Changhwan Lee and Somorjai, {Gabor A.} and Park, {Jeong Young}",

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T1 - Chemical-reaction-induced hot electron flows on platinum colloid nanoparticles under hydrogen oxidation

T2 - Impact of nanoparticle size

AU - Lee, Hyosun

AU - Nedrygailov, Ievgen I.

AU - Lee, Changhwan

AU - Somorjai, Gabor A.

AU - Park, Jeong Young

PY - 2015/2/16

Y1 - 2015/2/16

N2 - (Figure Presented) 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.

AB - (Figure Presented) 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.

KW - Catalytic nanodiodes

KW - Hot electrons

KW - Hydrogen oxidation

KW - Nanoparticles

KW - Platinum

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JF - Angewandte Chemie - International Edition

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ER -

Chemical-reaction-induced hot electron flows on platinum colloid nanoparticles under hydrogen oxidation: Impact of nanoparticle size

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Keywords

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