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Titolo:
Electrodeposition of Sb onto the low-index planes of Cu in aqueous chloride solutions: studies by LEED, AES and electrochemistry
Autore:
Ward, LC; Stickney, JL;
Indirizzi:
Univ Georgia, Dept Chem, Athens, GA 30602 USA Univ Georgia Athens GA USA 30602 Georgia, Dept Chem, Athens, GA 30602 USA
Titolo Testata:
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
fascicolo: 16, volume: 3, anno: 2001,
pagine: 3364 - 3370
SICI:
1463-9076(2001)3:16<3364:EOSOTL>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
ATOMIC LAYER EPITAXY; SCANNING-TUNNELING-MICROSCOPY; ENERGY-ELECTRON-DIFFRACTION; X-RAY-DIFFRACTION; CDTE THIN-FILMS; IN-SITU STM; ALTERNATED ELECTRODEPOSITION; HOMOEPITAXIAL GROWTH; SURFACE SEGREGATION; ADSORPTION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
70
Recensione:
Indirizzi per estratti:
Indirizzo: Stickney, JL Univ Georgia, Dept Chem, Athens, GA 30602 USA Univ Georgia Athens GA USA 30602 Chem, Athens, GA 30602 USA
Citazione:
L.C. Ward e J.L. Stickney, "Electrodeposition of Sb onto the low-index planes of Cu in aqueous chloride solutions: studies by LEED, AES and electrochemistry", PHYS CHEM P, 3(16), 2001, pp. 3364-3370

Abstract

The underpotential deposition (UPD) of Sb on Cu(111), Cu(100) and Cu(110) has been studied using ultra-high vacuum electrochemistry (UHV-EC) techniques. Sb was deposited from acidic chloride solutions and analyzed with Augerelectron spectroscopy, low-energy electron diffraction and cyclic voltammetry. A feature observed only in the first voltammetric cycle, starting fromthe rest potential, appears to be Sb UPD on the copper surfaces. Prior to Sb UPD, Cl structures were observed on each of the three Cu planes. When the potential was scanned into the transient reductive feature, antimony began to deposit, displacing the chlorine. Initially, structures containing both Cl and Sb were formed on the Cu surfaces, including a (root3 x root3)R30 degrees on the Cu(111), a (2 root2 x root2)R45 degrees on the Cu(100), and a structure denoted in matrix notation as ((1)(-1) (3)(1)) formed on Cu(110). Further Sb deposition results in displacement of the chloride and new structures on each face: Cu(111)(3 x root 21)-Sb, Cu(110)(3 x 2) and Cu(100)(3 x 2). Scanning the deposition potential further negative, into bulk Sb deposition, yielded no well-ordered structures.

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Documento generato il 29/09/20 alle ore 20:31:34