Home > Publications database > Surface Enhanced Infrared Spectroscopy - Au(111-20nm)/Sulphuric Acid - New Aspects and Challanges > print

001     30246
005     20180210125159.0
024 7 _ |2 DOI
|a 10.1016/j.electacta.2003.06.002
024 7 _ |2 WOS
|a WOS:000189226200006
037 _ _ |a PreJuSER-30246
041 _ _ |a eng
082 _ _ |a 540
084 _ _ |2 WoS
|a Electrochemistry
100 1 _ |a Wandlowski, T.
|b 0
|u FZJ
|0 P:(DE-Juel1)VDB5443
245 _ _ |a Surface Enhanced Infrared Spectroscopy - Au(111-20nm)/Sulphuric Acid - New Aspects and Challanges
260 _ _ |a New York, NY [u.a.]
|b Elsevier
|c 2004
300 _ _ |a 1233 - 1247
336 7 _ |a Journal Article
|0 PUB:(DE-HGF)16
|2 PUB:(DE-HGF)
336 7 _ |a Output Types/Journal article
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336 7 _ |a Journal Article
|0 0
|2 EndNote
336 7 _ |a ARTICLE
|2 BibTeX
336 7 _ |a JOURNAL_ARTICLE
|2 ORCID
336 7 _ |a article
|2 DRIVER
440 _ 0 |a Electrochimica Acta
|x 0013-4686
|0 1776
|v 49
500 _ _ |a Record converted from VDB: 12.11.2012
520 _ _ |a The structure and orientation of water molecules on Au(1 1 1-20nm) film electrodes in contact with aqueous sulphuric acid solution was studied by surface enhanced infrared reflection-absorption spectroscopy (SEIRAS) employing an attenuated total reflection (ATR) configuration (ATR-SEIRAS) with a vertical spectroelectrochemical cell. The spectrum of interfacial water is strongly dependent on electrode potential, ionic strength and pH. Coadsorption of hydronium ions with weakly hydrogen-bonded water molecules was found at E < E-pzc. At E > E-pzc strong hydrogen-bonding among water molecules and to coadsorbed sulphate species exists. Based on pH-dependent electrochemical, spectroscopic and in situ STM investigations, a new model is suggested to represent the ordered (root3 x root7) adlayer at maximum sulphate coverage theta = 0.2: a Zundel or hydrated hydronium ion H5O2+, in which one proton is shared between two water molecules, bridges adjacent sulphate species via hydrogen-bonds along the main diagonal of the (root3 x root7) unit cell. This alternating arrangement gives rise to a long-range ordered, 2D network of sulphate and water species interconnected by hydrogen-bonds, and capable to form hydrogen-bonds with second-layer water species. The suggested model is consistent with all experimental observations as well as predictions from quantum-chemical and molecular dynamic simulations. (C) 2003 Elsevier Ltd. All rights reserved.
536 _ _ |a Materialien, Prozesse und Bauelemente für die Mikro- und Nanoelektronik
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588 _ _ |a Dataset connected to Web of Science
650 _ 7 |a J
|2 WoSType
653 2 0 |2 Author
|a ATR-SEIRAS
653 2 0 |2 Author
|a Au(1 1 1-20 nm) film
653 2 0 |2 Author
|a single crystals
653 2 0 |2 Author
|a water
653 2 0 |2 Author
|a Zundel ion
653 2 0 |2 Author
|a sulphate
700 1 _ |a Ataka, K.
|b 1
|u FZJ
|0 P:(DE-Juel1)VDB5396
700 1 _ |a Pronkin, S.
|b 2
|u FZJ
|0 P:(DE-Juel1)VDB22265
700 1 _ |a Diesing, D.
|b 3
|u FZJ
|0 P:(DE-Juel1)VDB14258
773 _ _ |a 10.1016/j.electacta.2003.06.002
|g Vol. 49, p. 1233 - 1247
|p 1233 - 1247
|q 49<1233 - 1247
|0 PERI:(DE-600)1483548-4
|t Electrochimica acta
|v 49
|y 2004
|x 0013-4686
856 7 _ |u http://dx.doi.org/10.1016/j.electacta.2003.06.002
909 C O |o oai:juser.fz-juelich.de:30246
|p VDB
913 1 _ |k I01
|v Materialien, Prozesse und Bauelemente für die Mikro- und Nanoelektronik
|l Informationstechnologie mit nanoelektronischen Systemen
|b Information
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|x 0
914 1 _ |y 2004
915 _ _ |0 StatID:(DE-HGF)0010
|a JCR/ISI refereed
920 1 _ |k ISG-3
|l Institut für Grenzflächen und Vakuumtechnologien
|d 31.12.2006
|g ISG
|0 I:(DE-Juel1)VDB43
|x 0
970 _ _ |a VDB:(DE-Juel1)27826
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980 _ _ |a UNRESTRICTED
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