Local and nonlocal functions of Cs promoter in the O2-oxidation of graphite

J. R. Hahn; H. Kang

doi:10.1021/jp020725k

Local and nonlocal functions of Cs promoter in the O₂-oxidation of graphite

J. R. Hahn
, H. Kang^*

^*Corresponding author for this work

Department of Chemistry

Seoul National University

Research output: Contribution to journal › Journal article › peer-review

12 Scopus citations

Abstract

The O₂ oxidation reaction of graphite was studied by preparing Cs promoters in two different states: Cs adsorbed on a surface [Cs(ad)] and Cs trapped underneath a surface carbon plane [Cs(tr)]. Reactive ion scattering spectrometry (RIS) and scanning tunneling microscopy (STM) were used to identify the reaction intermediates and to measure the spatial range of the Cs promoter effect. Cs(ad) promotes the oxidation reaction in a localized region through formation of CsO and CsO₂ intermediates. On the other hand, Cs(tr) promotes the reaction over a long range, such that a large number (∼10³) of O₂ molecules are chemisorbed at a graphite surface and etch away the surface carbons.

Original language	English
Pages (from-to)	7445-7448
Number of pages	4
Journal	Journal of Physical Chemistry B
Volume	106
Issue number	30
DOIs	https://doi.org/10.1021/jp020725k
State	Published - 2002.08.1

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title = "Local and nonlocal functions of Cs promoter in the O2-oxidation of graphite",

abstract = "The O2 oxidation reaction of graphite was studied by preparing Cs promoters in two different states: Cs adsorbed on a surface [Cs(ad)] and Cs trapped underneath a surface carbon plane [Cs(tr)]. Reactive ion scattering spectrometry (RIS) and scanning tunneling microscopy (STM) were used to identify the reaction intermediates and to measure the spatial range of the Cs promoter effect. Cs(ad) promotes the oxidation reaction in a localized region through formation of CsO and CsO2 intermediates. On the other hand, Cs(tr) promotes the reaction over a long range, such that a large number (∼103) of O2 molecules are chemisorbed at a graphite surface and etch away the surface carbons.",

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year = "2002",

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doi = "10.1021/jp020725k",

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TY - JOUR

T1 - Local and nonlocal functions of Cs promoter in the O2-oxidation of graphite

AU - Hahn, J. R.

AU - Kang, H.

PY - 2002/8/1

Y1 - 2002/8/1

N2 - The O2 oxidation reaction of graphite was studied by preparing Cs promoters in two different states: Cs adsorbed on a surface [Cs(ad)] and Cs trapped underneath a surface carbon plane [Cs(tr)]. Reactive ion scattering spectrometry (RIS) and scanning tunneling microscopy (STM) were used to identify the reaction intermediates and to measure the spatial range of the Cs promoter effect. Cs(ad) promotes the oxidation reaction in a localized region through formation of CsO and CsO2 intermediates. On the other hand, Cs(tr) promotes the reaction over a long range, such that a large number (∼103) of O2 molecules are chemisorbed at a graphite surface and etch away the surface carbons.

AB - The O2 oxidation reaction of graphite was studied by preparing Cs promoters in two different states: Cs adsorbed on a surface [Cs(ad)] and Cs trapped underneath a surface carbon plane [Cs(tr)]. Reactive ion scattering spectrometry (RIS) and scanning tunneling microscopy (STM) were used to identify the reaction intermediates and to measure the spatial range of the Cs promoter effect. Cs(ad) promotes the oxidation reaction in a localized region through formation of CsO and CsO2 intermediates. On the other hand, Cs(tr) promotes the reaction over a long range, such that a large number (∼103) of O2 molecules are chemisorbed at a graphite surface and etch away the surface carbons.

UR - https://www.scopus.com/pages/publications/0036703943

U2 - 10.1021/jp020725k

DO - 10.1021/jp020725k

M3 - Journal article

AN - SCOPUS:0036703943

SN - 1520-6106

VL - 106

SP - 7445

EP - 7448

JO - Journal of Physical Chemistry B

JF - Journal of Physical Chemistry B

IS - 30

ER -

Local and nonlocal functions of Cs promoter in the O₂-oxidation of graphite

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