Navegar

Colección

Datos Estadísticas

Artículo

La versión final de este artículo es de uso interno. El editor solo permite incluir en el repositorio el artículo en su versión post-print. Por favor, si usted la posee enviela a
Consulte el artículo en la página del editor
Consulte la política de Acceso Abierto del editor

Abstract:

Surface segregation effects on polycrystalline Au-Cu alloys (Au 0.80Cu 0.20, Au 0.85Cu 0.15 and Au 0.90Cu 0.10) were studied at room temperature by angle resolved XPS (ARXPS) and density functional theory (DFT) before and after exposure to O 2. Au surface enrichment was found as predicted from calculations showing that this process is energetically favourable, with a segregation energy for Au in a Cu matrix of -0.37 eV atom -1. Surface enrichment with Cu was observed after exposure to O 2 due to its dissociative adsorption, in agreement with DFT calculations that predicted an energy gain of -1.80 eV atom -1 for the transfer of Cu atoms to a surface containing adsorbed oxygen atoms, thus leading to an inversion in surface population. © 2012 the Owner Societies.

Registro:

Documento: Artículo
Título:O 2 induced Cu surface segregation in Au-Cu alloys studied by angle resolved XPS and DFT modelling
Autor:Völker, E.; Williams, F.J.; Calvo, E.J.; Jacob, T.; Schiffrin, D.J.
Filiación:Departamento de Química Inorgánica, Analítica y Química-Física, INQUIMAE-CONICET, Facultad Ciencias Exactas y Naturales, Pabellón 2, Buenos Aires C1428EHA, Argentina
Chemistry Department, University of Liverpool, Liverpool L69 7ZD, United Kingdom
Institute of Electrochemistry, Ulm University, Albert-Einstein-Allee 47, D-89081 Ulm, Germany
Año:2012
Volumen:14
Número:20
Página de inicio:7448
Página de fin:7455
DOI: http://dx.doi.org/10.1039/c2cp40565b
Título revista:Physical Chemistry Chemical Physics
Título revista abreviado:Phys. Chem. Chem. Phys.
ISSN:14639076
CODEN:PPCPF
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14639076_v14_n20_p7448_Volker

Referencias:

  • Olah, G.A., Goeppert, A., Prakash, G.K.S., (2009) J. Org. Chem., 74, pp. 487-498
  • Dorner, R.W., Hardy, D.R., Williams, F.W., Willauer, H.D., (2010) Energy Environ. Sci., 3, pp. 884-890
  • Hori, Y., Kikuchi, K., Suzuki, S., (1985) Chem. Lett., pp. 1695-1698
  • Gattrell, M., Gupta, N., (2006) J. Electroanal. Chem., 594, pp. 1-19
  • Hori, Y., Murata, A., Takahashi, R., (1989) J. Chem. Soc., Faraday Trans. 1, 85, pp. 2309-2326
  • Hansen, M., Anderko, K., (1958) Constitution of Binary Alloys, , McGraw Hill, New York
  • Bracey, C.L., Ellis, P.R., Hutchings, G.J., (2009) Chem. Soc. Rev., 38, pp. 2231-2243
  • Dowben, P.A., Miller, A., (1990) Surface Segregation and Related Phenomena, , ed., CRC Press, Boca Raton Fl
  • Du-Plessis, J., (1990) Solid State Phenom., 11, pp. 1-113
  • McDavid, Jr.J.M., (1975) Surf. Sci., 52, pp. 161-173
  • Sparnaay, M.J., Thomas, G.E., (1983) Surf. Sci., 135, pp. 184-198
  • Losch, W., Kirschner, J., (1978) J. Vac. Sci. Technol., 15, pp. 1541-1548
  • Nakanishi, S., Fukuoka, N., Kawamoto, K., Umezawa, K., Teraoka, Y., Nakahigashi, K., (1991) Surf. Sci., 247, pp. L215-L220
  • Ruban, A.V., Skriver, H.L., Nørskov, J.K., (1999) Phys. Rev. B: Condens. Matter, 59, pp. 15990-16000
  • Nilekar, A.U., Ruban, A.V., Mavrikakis, M., (2009) Surf. Sci., 603, pp. 91-96
  • Wang, L., Johnson, D.D., (2009) J. Am. Chem. Soc., 131, pp. 14023-14029
  • Nakanishi, S., Kawamoto, K., Fukuoka, N., Umezawa, K., (1992) Surf. Sci., 261, pp. 342-348
  • Venkatachalam, S., Jacob, T., (2009) Phys. Chem. Chem. Phys., 11, pp. 3263-3270
  • Jirkovský, J.S., Panas, I., Romani, S., Ahlberg, E., Schiffrin, D.J., (2012) J. Phys. Chem. Lett., pp. 315-321
  • Scofield, J.H., (1976) J. Electron Spectrosc. Relat. Phenom., 8, pp. 129-137
  • (2008) ASF Dataset, , provided by SPECS
  • Smith, G.C., Livesey, A.K., (1992) Surf. Interface Anal., 19, pp. 175-180
  • Livesey, A.K., Smith, G.C., (1994) J. Electron Spectrosc. Relat. Phenom., 67, pp. 439-461
  • Paynter, R.W., (2009) J. Electron Spectrosc. Relat. Phenom., 169, pp. 1-9
  • Paynter, R.W., (1999) Surf. Interface Anal., 27, pp. 103-113
  • Verdozzi, C., Schultz, P.A., Wu, R., Edwards, A.H., Kioussis, N., (2002) Phys. Rev. B: Condens. Matter, 66, p. 125408
  • West, A.R., (1984) Solid State Chemistry and Its Applications, , John Wiley & Sons, Chichester
  • Atkins, P.W., (1990) Physical Chemistry, , Oxford University Press, Oxford, p. 623
  • Polcik, M., Wilde, L., Haase, J., Brena, B., Cocco, D., Comelli, G., Paolucci, G., (1996) Phys. Rev. B: Condens. Matter, 53, pp. 13720-13724
  • Emsley, J., (1989) The Elements, , Clarendon Press, Oxford
  • Zemek, J., (2010) Anal. Sci., 26, pp. 177-186
  • Oswald, S., Oswald, F., (2007) Phys. Status Solidi C, 4, pp. 1817-1821
  • Mróz, S., (1998) Prog. Surf. Sci., 59, pp. 323-330
  • Good, B., Bozzolo, G.H., Abel, P.B., (2000) Surf. Sci., 454-456, pp. 602-607
  • Okada, M., Moritani, K., Fukuyama, T., Mizutani, H., Yoshigoe, A., Teraoka, Y., Kasai, T., (2006) Surf. Sci., 600, pp. 4228-4232
  • Poon, H.C., Khanra, B.C., King, T.S., (1993) Phys. Rev. B: Condens. Matter, 47, pp. 16494-16498
  • Soto-Verdugo, V., Metiu, H., (2007) Surf. Sci., 601, pp. 5332-5339
  • Mayrhofer, K.J.J., Hartl, K., Juhart, V., Arenz, M., (2009) Angew. Chem., Int. Ed., 48, pp. 3529-3531
  • Mayrhofer, K.J.J., Hartl, K., Juhart, V., Arenz, M., (2009) J. Am. Chem. Soc., 131, pp. 16348-16349

Citas:

---------- APA ----------
Völker, E., Williams, F.J., Calvo, E.J., Jacob, T. & Schiffrin, D.J. (2012) . O 2 induced Cu surface segregation in Au-Cu alloys studied by angle resolved XPS and DFT modelling. Physical Chemistry Chemical Physics, 14(20), 7448-7455.
http://dx.doi.org/10.1039/c2cp40565b
---------- CHICAGO ----------
Völker, E., Williams, F.J., Calvo, E.J., Jacob, T., Schiffrin, D.J. "O 2 induced Cu surface segregation in Au-Cu alloys studied by angle resolved XPS and DFT modelling" . Physical Chemistry Chemical Physics 14, no. 20 (2012) : 7448-7455.
http://dx.doi.org/10.1039/c2cp40565b
---------- MLA ----------
Völker, E., Williams, F.J., Calvo, E.J., Jacob, T., Schiffrin, D.J. "O 2 induced Cu surface segregation in Au-Cu alloys studied by angle resolved XPS and DFT modelling" . Physical Chemistry Chemical Physics, vol. 14, no. 20, 2012, pp. 7448-7455.
http://dx.doi.org/10.1039/c2cp40565b
---------- VANCOUVER ----------
Völker, E., Williams, F.J., Calvo, E.J., Jacob, T., Schiffrin, D.J. O 2 induced Cu surface segregation in Au-Cu alloys studied by angle resolved XPS and DFT modelling. Phys. Chem. Chem. Phys. 2012;14(20):7448-7455.
http://dx.doi.org/10.1039/c2cp40565b