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Volumn 113, Issue 24, 2000, Pages 11284-11292

Interaction of sulfur with Pt(111) and Sn/Pt(111): Effects of coverage and metal-metal bonding on reactivity toward sulfur

Author keywords

[No Author keywords available]

Indexed keywords

BINDING ENERGY; CHEMICAL BONDS; DESORPTION; FERMI LEVEL; MONOLAYERS; PHOTOEMISSION; PLATINUM ALLOYS; SPECTROSCOPY; SULFUR;

EID: 0034511485     PISSN: 00219606     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.1327249     Document Type: Article
Times cited : (56)

References (87)
  • 23
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    • To be published
    • To be published.
  • 29
  • 38
    • 0001135161 scopus 로고    scopus 로고
    • (a) Q. Ge and D. A. King, J. Chem. Phys. 111, 9461 (1999); 110, 4699 (1999);
    • (1999) J. Chem. Phys. , vol.110 , pp. 4699
  • 67
    • 0001420508 scopus 로고    scopus 로고
    • F. Delbecq and P. Sautet, Surf. Sci. 442, 338 (1999); Phys. Rev. B 59, 5142 (1999).
    • (1999) Phys. Rev. B , vol.59 , pp. 5142
  • 69
    • 0343456052 scopus 로고    scopus 로고
    • note
    • -1, a heating rate of 5 K/s, and a desorption temperature of 1200 K;
  • 70
  • 71
    • 0343456053 scopus 로고    scopus 로고
    • note
    • For the S atom near an a-top site the Pt-S distance was 2.31 Å, whereas for the S atom in a mixed hollow-bridge site the two shorter Pt-S distances were 2.46 and 2.47 Å (see Fig. 4).
  • 72
    • 0342586156 scopus 로고    scopus 로고
    • note
    • -1, a heating rate of 5 K/s, and a desorption temperature of 720 K.
  • 75
    • 0343891783 scopus 로고    scopus 로고
    • note
    • (a) For example, using the DMoL3 program [Refs. 32 and 55(b)] with a localized atomic-orbital basis set (double zeta quality plus polarization functions) and the GGA approximation [Becke-88 for exchange (c) and Perdew-91 for correlation (d)], we found that for the systems in Table I the negative Mulliken charge (e) on the sulfur adatoms was always small in absolute terms (<0.3e). For a given adsorption site the negative charge on sulfur decreased with increasing coverage, and in all cases the Pt-S bond was mostly covalent. This can be expected since the Pauling Electronegativities of Pt and S are not very different (f);
  • 78
    • 0003754095 scopus 로고
    • edited by P. Ziesche and H. Esching Akademie-Verlag, Berlin
    • J. P. Perdew, in Electronic Structure of Solids '91, edited by P. Ziesche and H. Esching (Akademie-Verlag, Berlin, 1991);
    • (1991) Electronic Structure of Solids '91
    • Perdew, J.P.1
  • 82
    • 0343891768 scopus 로고    scopus 로고
    • note
    • -1, a heating rate of 5 K/s, and desorption temperatures of 720 (Pt), 630 (Sn/Pt), and 680 K (Sn/Pt).
  • 83
    • 0343456040 scopus 로고    scopus 로고
    • note
    • 2 species are bonded to two Pt atoms (almost a-top coordination; see the bottom of Fig. 8) with Pt-S bond distances of 2.33 and 2.30 Å.
  • 84
    • 0342586149 scopus 로고    scopus 로고
    • note
    • In this case, a sulfur atom is almost on top of a Pt atom (Pt-S bond length= 2.34 Å) and the second sulfur is well above a tin atom (Sn-S bond length= 3.21 Å); see Fig. 8.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.