NMR evidence of a spatially resolved oscillation in the Ef-LDOS in a nanoscale platinum electrocatalyst

Yu Ye Tong; Panakkattu K. Babu; Andrzej Wieckowski; Eric Oldfield

doi:10.1016/S0009-2614(02)00885-0

NMR evidence of a spatially resolved oscillation in the E_f-LDOS in a nanoscale platinum electrocatalyst

Yu Ye Tong, Panakkattu K. Babu, Andrzej Wieckowski, Eric Oldfield

Chemistry

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

Abstract

Indirect nuclear spin-spin J-coupling measurements have been carried out on a conducting, carbon-supported 8.8 nm platinum electrocatalyst by using ¹⁹⁵Pt NMR. The J-coupling values show a marked variation across the spectrum. These J-coupling values were then transformed into the corresponding s-like Fermi level local density of states D_s(E_f,x), where x is the distance from the particle surface, revealing a spatially resolved oscillatory decay in D_s(E_f) which is responsible for the line broadening of the bulk peak in the ¹⁹⁵Pt NMR spectrum.

Original language	English (US)
Pages (from-to)	183-188
Number of pages	6
Journal	Chemical Physics Letters
Volume	361
Issue number	3-4
DOIs	https://doi.org/10.1016/S0009-2614(02)00885-0
State	Published - Jul 30 2002

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

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title = "NMR evidence of a spatially resolved oscillation in the Ef-LDOS in a nanoscale platinum electrocatalyst",

abstract = "Indirect nuclear spin-spin J-coupling measurements have been carried out on a conducting, carbon-supported 8.8 nm platinum electrocatalyst by using 195Pt NMR. The J-coupling values show a marked variation across the spectrum. These J-coupling values were then transformed into the corresponding s-like Fermi level local density of states Ds(Ef,x), where x is the distance from the particle surface, revealing a spatially resolved oscillatory decay in Ds(Ef) which is responsible for the line broadening of the bulk peak in the 195Pt NMR spectrum.",

author = "Tong, {Yu Ye} and Babu, {Panakkattu K.} and Andrzej Wieckowski and Eric Oldfield",

note = "Funding Information: This work was supported by the United States National Science Foundation (Grant CTS 97-26419), by an equipment grant from the United States Defense Advanced Research Projects Agency (Grant DAAH 04-95-1-0581), and by the US Department of Energy under Award No. DEFG02-96ER45439.",

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T1 - NMR evidence of a spatially resolved oscillation in the Ef-LDOS in a nanoscale platinum electrocatalyst

AU - Tong, Yu Ye

AU - Babu, Panakkattu K.

AU - Wieckowski, Andrzej

AU - Oldfield, Eric

N1 - Funding Information: This work was supported by the United States National Science Foundation (Grant CTS 97-26419), by an equipment grant from the United States Defense Advanced Research Projects Agency (Grant DAAH 04-95-1-0581), and by the US Department of Energy under Award No. DEFG02-96ER45439.

PY - 2002/7/30

Y1 - 2002/7/30

N2 - Indirect nuclear spin-spin J-coupling measurements have been carried out on a conducting, carbon-supported 8.8 nm platinum electrocatalyst by using 195Pt NMR. The J-coupling values show a marked variation across the spectrum. These J-coupling values were then transformed into the corresponding s-like Fermi level local density of states Ds(Ef,x), where x is the distance from the particle surface, revealing a spatially resolved oscillatory decay in Ds(Ef) which is responsible for the line broadening of the bulk peak in the 195Pt NMR spectrum.

AB - Indirect nuclear spin-spin J-coupling measurements have been carried out on a conducting, carbon-supported 8.8 nm platinum electrocatalyst by using 195Pt NMR. The J-coupling values show a marked variation across the spectrum. These J-coupling values were then transformed into the corresponding s-like Fermi level local density of states Ds(Ef,x), where x is the distance from the particle surface, revealing a spatially resolved oscillatory decay in Ds(Ef) which is responsible for the line broadening of the bulk peak in the 195Pt NMR spectrum.

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