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Title: Quantitative analysis of desorption and decomposition kinetics of formic acid on Cu(111): The importance of hydrogen bonding between adsorbed species

Abstract

Quantitative analysis of desorption and decomposition kinetics of formic acid (HCOOH) on Cu(111) was performed by temperature programmed desorption (TPD), X-ray photoelectron spectroscopy, and time-resolved infrared reflection absorption spectroscopy. The activation energy for desorption is estimated to be 53–75 kJ/mol by the threshold TPD method as a function of coverage. Vibrational spectra of the first layer HCOOH at 155.3 K show that adsorbed molecules form a polymeric structure via the hydrogen bonding network. Adsorbed HCOOH molecules are dissociated gradually into monodentate formate species. The activation energy for the dissociation into monodentate formate species is estimated to be 65.0 kJ/mol at a submonolayer coverage (0.26 molecules/surface Cu atom). The hydrogen bonding between adsorbed HCOOH species plays an important role in the stabilization of HCOOH on Cu(111). The monodentate formate species are stabilized at higher coverages, because of the lack of vacant sites for the bidentate formation.

Authors:
; ; ; ;  [1]
  1. The Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581 (Japan)
Publication Date:
OSTI Identifier:
22493354
Resource Type:
Journal Article
Journal Name:
Journal of Chemical Physics
Additional Journal Information:
Journal Volume: 143; Journal Issue: 23; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-9606
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ABSORPTION SPECTROSCOPY; ACTIVATION ENERGY; ATOMS; COPPER; DECOMPOSITION; DESORPTION; DISSOCIATION; FORMATES; FORMIC ACID; HYDROGEN; INFRARED SPECTRA; LAYERS; MOLECULES; REFLECTION; STABILIZATION; SURFACES; TIME RESOLUTION; X-RAY PHOTOELECTRON SPECTROSCOPY

Citation Formats

Shiozawa, Yuichiro, Koitaya, Takanori, Mukai, Kozo, Yoshimoto, Shinya, and Yoshinobu, Jun. Quantitative analysis of desorption and decomposition kinetics of formic acid on Cu(111): The importance of hydrogen bonding between adsorbed species. United States: N. p., 2015. Web. doi:10.1063/1.4937414.
Shiozawa, Yuichiro, Koitaya, Takanori, Mukai, Kozo, Yoshimoto, Shinya, & Yoshinobu, Jun. Quantitative analysis of desorption and decomposition kinetics of formic acid on Cu(111): The importance of hydrogen bonding between adsorbed species. United States. https://doi.org/10.1063/1.4937414
Shiozawa, Yuichiro, Koitaya, Takanori, Mukai, Kozo, Yoshimoto, Shinya, and Yoshinobu, Jun. 2015. "Quantitative analysis of desorption and decomposition kinetics of formic acid on Cu(111): The importance of hydrogen bonding between adsorbed species". United States. https://doi.org/10.1063/1.4937414.
@article{osti_22493354,
title = {Quantitative analysis of desorption and decomposition kinetics of formic acid on Cu(111): The importance of hydrogen bonding between adsorbed species},
author = {Shiozawa, Yuichiro and Koitaya, Takanori and Mukai, Kozo and Yoshimoto, Shinya and Yoshinobu, Jun},
abstractNote = {Quantitative analysis of desorption and decomposition kinetics of formic acid (HCOOH) on Cu(111) was performed by temperature programmed desorption (TPD), X-ray photoelectron spectroscopy, and time-resolved infrared reflection absorption spectroscopy. The activation energy for desorption is estimated to be 53–75 kJ/mol by the threshold TPD method as a function of coverage. Vibrational spectra of the first layer HCOOH at 155.3 K show that adsorbed molecules form a polymeric structure via the hydrogen bonding network. Adsorbed HCOOH molecules are dissociated gradually into monodentate formate species. The activation energy for the dissociation into monodentate formate species is estimated to be 65.0 kJ/mol at a submonolayer coverage (0.26 molecules/surface Cu atom). The hydrogen bonding between adsorbed HCOOH species plays an important role in the stabilization of HCOOH on Cu(111). The monodentate formate species are stabilized at higher coverages, because of the lack of vacant sites for the bidentate formation.},
doi = {10.1063/1.4937414},
url = {https://www.osti.gov/biblio/22493354}, journal = {Journal of Chemical Physics},
issn = {0021-9606},
number = 23,
volume = 143,
place = {United States},
year = {Mon Dec 21 00:00:00 EST 2015},
month = {Mon Dec 21 00:00:00 EST 2015}
}