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Surface Chemistry Of 2-propanol And O2 Mixtures On SnO2(110) Studied With Ambient-pressure X-ray Photoelectron Spectroscopy.

J. T. Diulus, Radwan Elzein, R. Addou, G. Herman
Published 2020 · Chemistry, Medicine

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Tin dioxide (SnO2) has various applications due to its unique surface and electronic properties. These properties are strongly influenced by Sn oxidation states and associated defect chemistries. Recently, the oxidation of volatile organic compounds (VOCs) into less harmful molecules has been demonstrated using SnO2 catalysts. A common VOC, 2-propanol (isopropyl alcohol, IPA), has been used as a model compound to better understand SnO2 reaction kinetics. We have used ambient-pressure x-ray photoelectron spectroscopy (AP-XPS) to characterize the surface chemistry of IPA and O2 mixtures on stoichiometric, unreconstructed SnO2(110)-(1 × 1) surfaces. AP-XPS experiments were performed for IPA pressures ≤3 mbar, various IPA/O2 ratios, and several reaction temperatures. These measurements allowed us to determine the chemical states of adsorbed species on SnO2(110)-(1 × 1) under numerous experimental conditions. We found that both the IPA/O2 ratio and sample temperature strongly influence reaction chemistries. AP-XPS valence-band spectra indicate that the surface was partially reduced from Sn4+ to Sn2+ during reactions with IPA. In situ mass spectrometry and gas-phase AP-XPS results indicate that the main reaction product was acetone under these conditions. For O2 and IPA mixtures, the reaction kinetics substantially increased and the surface remained solely Sn4+. We believe that O2 replenished surface oxygen vacancies and that SnO2 bridging and in-plane oxygen are likely the active oxygen species. Moreover, addition of O2 to the reaction results in a reduction in formation of acetone and an increase in formation of CO2 and H2O. Based on these studies, we have developed a reaction model that describes the catalytic oxidation of IPA on stoichiometric SnO2(110)-(1 × 1) surfaces.
This paper references
New catalytic system for oxidation of isopropyl alcohol with thin film catalysts
J. Leclercq (2014)
Elastic Scattering Corrections in AES and XPS. II. Estimating Attenuation Lengths and Conditions Required for their Valid Use in Overlayer/Substrate Experiments
P. Cumpson (1997)
Ambient-Pressure XPS Studies of Reactions of Alcohols on SrTiO3(100)
Yafen Zhang (2017)
Role of Defects in the Adsorption of Aliphatic Alcohols on the TiO2(110) Surface
Enrique Farfan-Arribas and (2002)
The energetics and structure of oxygen vacancies on the SnO2(110) surface
J. Oviedo (2000)
Re-investigating the CO oxidation mechanism over unsupported MnO, Mn2O3 and MnO2 catalysts
K. Ramesh (2008)
Surface morphologies of SnO2(1 1 0)
M. Batzill (2003)
The surface and materials science of tin oxide
M. Batzill (2005)
SnO2 nano-rods with superior CO oxidation performance
X. Wang (2014)
Propan-2-ol transformation on simple metal oxides TiO2, ZrO2 and CeO2
D. Haffad (2001)
Oxygen-vacancy-controlled chemistry on a metal oxide surface: methanol dissociation and oxidation on SnO2(110)
Victoria A. Gercher (1994)
XANES and XPS investigations of surface defects in wire-like SnO2 crystals
O. A. Chuvenkova (2015)
Metal Oxide Nanostructures and Their Gas Sensing Properties: A Review
Y. Sun (2012)
Photocatalytic Dehydrogenation of 2-Propanol on TiO2(110)
D. Brinkley (1998)
The catalytic oxidation of carbon monoxide on tin(IV) oxide
M. J. Fuller (1973)
Formic acid decomposition on SnO2(110)
Victoria A. Gercher (1994)
Acetone adsorption on ice investigated by X-ray spectroscopy and density functional theory.
D. Starr (2011)
In situ FTIR studies on the oxidation of isopropyl alcohol over SnO2 as a function of temperature up to 600 °C and a comparison to the analogous plasma-driven process.
P. Christensen (2018)
Disordered reconstructions of the reduced SnO2-(110) surface
P. Ágoston (2011)
CO oxidation as a prototypical reaction for heterogeneous processes.
H. Freund (2011)
Behavior of Supported Palladium Oxide Nanoparticles under Reaction Conditions, Studied with near Ambient Pressure XPS.
A. Jürgensen (2015)
Structures of the 4×1 and 1×2 reconstructions of SnO 2 (110)
C. Pang (2000)
The surface science of metal oxides
V. Henrich (1994)
2-Propanol dehydration on TiO2(110) : The effect of bridge-bonded oxygen vacancy blocking
Y. Kim (2008)
Lab-based ambient pressure X-ray photoelectron spectroscopy from past to present
C. Arble (2018)
Improvement of sensing properties for SnO2 gas sensor by tuning of exposed crystal face
P. G. Choi (2019)
Chemisorbed Oxygen Species over the (110) Face of SnO2
K. Tabata (2003)
XPS and XANES studies of SnOx nanolayers
E. Domashevskaya (2008)
Isopropanol oxidation by pure metal oxide catalysts: number of active surface sites and turnover frequencies
D. Kulkarni (2002)
STM observation of SnO2 (1 1 0) thermal-treated under oxidative condition
K. Shimanoe (2006)
Size-Dependent Oxidation State and CO Oxidation Activity of Tin Oxide Clusters
Yusuke Inomata (2018)
Supported metal oxide and other catalysts for ethane conversion: a review
M. Bañares (1999)
Atomic subshell photoionization cross sections and asymmetry parameters: 1 ⩽ Z ⩽ 103
J. J. Yeh (1985)
Thermal decomposition of iso-propanol: First-principles prediction of total and product-branching rate constants
B. H. Bui (2002)
Oxygen vacancies and defect electronic states on the SnO2(110)-1 x 1 surface.
Cox (1988)
SnO2: A comprehensive review on structures and gas sensors
S. Das (2014)
Atomically thin tin dioxide sheets for efficient catalytic oxidation of carbon monoxide.
Yongfu Sun (2013)

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