Proton transfer in a two-dimensional hydrogen-bonding network: Water and hydroxyl on a Pt(111) surface

M. Nagasaka, Hiroshi Kondoh, K. Amemiya, T. Ohta, Y. Iwasawa

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

The time scale of proton transfer between H2O and OH adsorbed on a Pt(111) surface was determined by a combination of laser-induced thermal desorption (LITD) and microscale x-ray photoelectron spectroscopy (micro-XPS). The patterned distribution OH+H2O/H2O/OH+H2O was initially prepared on the Pt(111) surface by the LITD method and the time evolution of the spatial distribution of H2O and OH was observed by the micro-XPS technique. From quantitative analyses based on a diffusion equation, we found two proton-transfer pathways with different time scales of 5.2±0.9ns and 48±12ns at 140 K, which were attributed to direct proton transfer to the neighbor site and H3O+-mediated transfer to the next-nearest site, respectively.

Original languageEnglish
Article number106101
JournalPhysical Review Letters
Volume100
Issue number10
DOIs
Publication statusPublished - 2008 Mar 10
Externally publishedYes

Fingerprint

protons
hydrogen
microbalances
x ray spectroscopy
water
desorption
photoelectron spectroscopy
lasers
spatial distribution

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Proton transfer in a two-dimensional hydrogen-bonding network : Water and hydroxyl on a Pt(111) surface. / Nagasaka, M.; Kondoh, Hiroshi; Amemiya, K.; Ohta, T.; Iwasawa, Y.

In: Physical Review Letters, Vol. 100, No. 10, 106101, 10.03.2008.

Research output: Contribution to journalArticle

@article{8e59e01e6c214b1098473c7cd1797084,
title = "Proton transfer in a two-dimensional hydrogen-bonding network: Water and hydroxyl on a Pt(111) surface",
abstract = "The time scale of proton transfer between H2O and OH adsorbed on a Pt(111) surface was determined by a combination of laser-induced thermal desorption (LITD) and microscale x-ray photoelectron spectroscopy (micro-XPS). The patterned distribution OH+H2O/H2O/OH+H2O was initially prepared on the Pt(111) surface by the LITD method and the time evolution of the spatial distribution of H2O and OH was observed by the micro-XPS technique. From quantitative analyses based on a diffusion equation, we found two proton-transfer pathways with different time scales of 5.2±0.9ns and 48±12ns at 140 K, which were attributed to direct proton transfer to the neighbor site and H3O+-mediated transfer to the next-nearest site, respectively.",
author = "M. Nagasaka and Hiroshi Kondoh and K. Amemiya and T. Ohta and Y. Iwasawa",
year = "2008",
month = "3",
day = "10",
doi = "10.1103/PhysRevLett.100.106101",
language = "English",
volume = "100",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "10",

}

TY - JOUR

T1 - Proton transfer in a two-dimensional hydrogen-bonding network

T2 - Water and hydroxyl on a Pt(111) surface

AU - Nagasaka, M.

AU - Kondoh, Hiroshi

AU - Amemiya, K.

AU - Ohta, T.

AU - Iwasawa, Y.

PY - 2008/3/10

Y1 - 2008/3/10

N2 - The time scale of proton transfer between H2O and OH adsorbed on a Pt(111) surface was determined by a combination of laser-induced thermal desorption (LITD) and microscale x-ray photoelectron spectroscopy (micro-XPS). The patterned distribution OH+H2O/H2O/OH+H2O was initially prepared on the Pt(111) surface by the LITD method and the time evolution of the spatial distribution of H2O and OH was observed by the micro-XPS technique. From quantitative analyses based on a diffusion equation, we found two proton-transfer pathways with different time scales of 5.2±0.9ns and 48±12ns at 140 K, which were attributed to direct proton transfer to the neighbor site and H3O+-mediated transfer to the next-nearest site, respectively.

AB - The time scale of proton transfer between H2O and OH adsorbed on a Pt(111) surface was determined by a combination of laser-induced thermal desorption (LITD) and microscale x-ray photoelectron spectroscopy (micro-XPS). The patterned distribution OH+H2O/H2O/OH+H2O was initially prepared on the Pt(111) surface by the LITD method and the time evolution of the spatial distribution of H2O and OH was observed by the micro-XPS technique. From quantitative analyses based on a diffusion equation, we found two proton-transfer pathways with different time scales of 5.2±0.9ns and 48±12ns at 140 K, which were attributed to direct proton transfer to the neighbor site and H3O+-mediated transfer to the next-nearest site, respectively.

UR - http://www.scopus.com/inward/record.url?scp=40849114798&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=40849114798&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.100.106101

DO - 10.1103/PhysRevLett.100.106101

M3 - Article

AN - SCOPUS:40849114798

VL - 100

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 10

M1 - 106101

ER -