Orientation of ethanethiol on Cu(111); low and room temperature adsorption

Syed, J.A.; Sardar, S. A.; Yagi, Shunsuke; Tanaka, Kenichiro

doi:10.1016/j.tsf.2006.08.004

Cited by 8 publications

(11 citation statements)

References 34 publications

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“…In the existing literature, − it is known that, for alkane and benzene thiol on Cu, the core level binding energy of thiolate S bonded to Cu is around 162.4 eV. This is compatible with the second “T” doublet in Figure .…”

Section: Resultssupporting

confidence: 83%

“…As discussed for Au and Ag, one could consider that this may be an alternative adsorption site for BDMT on Cu. However, in the literature, one also finds several indications ,,− that there may be spontaneous dissociation of thiols in some cases. This would seem to occur in the case of, e.g., alkanethiols , on Cu(100) and Cu(111) but not for benzenethiol on Cu(100) .…”

Section: Resultsmentioning

confidence: 99%

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1,4-Benzenedimethanethiol Interaction with Au(110), Ag(111), Cu(100), and Cu(111) Surfaces: Self-Assembly and Dissociation Processes

et al. 2014

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In this work, we study systematically the evaporative adsorption under high vacuum conditions of 1,4-benzenedimethanethiol (BDMT) onto different metal surfaces: Ag(111), Au(110), Cu(100), and Cu(111). The study is carried out by photoemission using synchrotron radiation. In the case of Ag(111) and Au(110), at low exposures, a lying down BDMT phase is formed, with both S atoms attached to Ag and Au. A standing up phase is attained after a large exposure, above several hundred thousand Langmuir. However, also a mixed complex over layer appears to be formed, attributable to molecules sticking on top of the SAM. In the case of Au(110), heating leads to BDMT desorption with some degree of SC bond scission, and some S atoms are left in different adsorption sites with mainly two different core level binding energies. On Ag(111), after heating the sample, BDMT desorbs and also sulfidation of Ag occurs. In the case of Cu(100) and Cu(111), SC bond cleavage occurs already after initial adsorption. Lost S from BDMT molecules is adsorbed on Cu. Surface passivation occurs and only then BDMT adsorption takes place, with an interface with Cu enriched with sulfur

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Section: Resultssupporting

confidence: 83%

Section: Resultsmentioning

confidence: 99%

1,4-Benzenedimethanethiol Interaction with Au(110), Ag(111), Cu(100), and Cu(111) Surfaces: Self-Assembly and Dissociation Processes

et al. 2014

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“…These molecules adsorb both molecularly and dissociatively, depending on the surface reactivity, at room temperature. Dissociative adsorption results in thiolate and H by S−H bond cleavage, while C−S bond breaking is known to occur at temperatures higher than 400 K on Cu(111) [26], 500 K on the surfaces of Si [27] and GaAs [28], and 460 K on ZnO(0001) [29]. The XPS studies [25−28] have revealed that S in adsorbed thiolate gives an S 2p3/2 peak at ~163 eV (±1 eV), while a peak from undissociated thiol appears at 164−165 eV.…”

Section: B Adsorption State Of Ethanethiolmentioning

confidence: 99%

Two-dimensional Electron Gas at Thiol/ZnO Interface

Ozawa

Mase

2020

e-J. Surf. Sci. Nanotechnol.

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Electronic modification of O-terminated ZnO(0001 _ ) and Znterminated ZnO(0001) by ethanethiol (C 2 H 5 SH) adsorption was investigated by angle-resolved photoelectron spectroscopy (ARPES) and X-ray photoelectron spectroscopy (XPS). Ethanethiol dissociates on both surfaces at room temperature to form C 2 H 5 S and H. The saturation coverage of ethanethiol is nearly three times larger on ZnO(0001) than on ZnO(0001 _ ). This suggests that Zn atoms exposed to the surface should act as adsorption and dissociation sites. Adsorption on the (0001 _ ) surface induces large downward band bending and accompanies a Zn 4s-derived metallic state at the center of the surface Brillouin zone. This proves that ethanethiol is a good electron donor on ZnO(0001 _ ). Contrastingly, ethanethiol on ZnO(0001) hardly affects the energetic position of the ZnO band so that surface metallization is not brought about.

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“…The mechanism of ethanethiol catalytic oxidation which was inferred from experimental results and related literatures [7][8][9][10][11] was as follows: catalytic oxidation of ethanethiol can be divided into two stages: (a) ethanethiol is decomposed and oxidized by energized electrons and activated oxygen atoms in the discharge zone; (b) ethanethiol is further decomposed and oxidized by ozone and oxygen species on the surface of catalysts into intermediates. The second stage contains the following parts:…”

Section: Mechanism Of Catalytic Oxidation Of Ethanethiolmentioning

confidence: 99%

Ethanethiol Removal Using a Novel Plasma Reactor Combined with Mn/?-Al2O3

Lü

Wang

et al. 2009

2009 International Conference on Environmental Science and Information Application Technology

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This study is to develop a hybrid technology of plasma and catalysis for odor control. Reactive species were generated from the three types of plasma discharge, such as pulsed corona discharge, dielectric barrier discharge (DBD) and hybrid discharge (pulsed corona discharge and DBD plasma occurring together), driven by a self-made pulsed high voltage power supply. Ethanethiol was selected as treated target malodorant. The effects of three various types of discharges on ethanethiol removal rate and energy efficiency were investigated. Then, plasma catalytic oxidation of ethanethiol usingγ-Al 2 O 3 , Mn/γ-Al 2 O 3 as catalysts was also estimated by the corresponding enhanced ethanethiol removal rate and energy efficiency. The results showed that the ethanethiol removal rate increased with increasing applied voltage but energy efficiency had a maximum with increasing applied voltage under three various types of discharges. When using corona discharge with catalysts, the maximum energy efficiency and the corresponding ethanethiol removal rate were 20 % and 30 g/kWh at 5 J/L, respectively. The mechanism of catalytic oxidation of ethanethiol was also discussed.

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Orientation of ethanethiol on Cu(111); low and room temperature adsorption

Cited by 8 publications

References 34 publications

1,4-Benzenedimethanethiol Interaction with Au(110), Ag(111), Cu(100), and Cu(111) Surfaces: Self-Assembly and Dissociation Processes

1,4-Benzenedimethanethiol Interaction with Au(110), Ag(111), Cu(100), and Cu(111) Surfaces: Self-Assembly and Dissociation Processes

Two-dimensional Electron Gas at Thiol/ZnO Interface

Ethanethiol Removal Using a Novel Plasma Reactor Combined with Mn/?-Al2O3

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