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Imaging the ordering of a weakly adsorbed two-dimensional condensate: ambient-pressure microscopy and spectroscopy of CO2 molecules on rutile TiO2(110).
Hamlyn, Rebecca C E; Mahapatra, Mausumi; Grinter, David C; Xu, Fang; Luo, Si; Palomino, Robert M; Kattel, Shyam; Waluyo, Iradwikanari; Liu, Ping; Stacchiola, Dario J; Senanayake, Sanjaya D; Rodriguez, José A.
Afiliação
  • Hamlyn RCE; Chemistry Department, Brookhaven National Laboratory, Bldg. 555A, P.O. Box 5000, Upton, New York 11973, USA. rodrigez@bnl.gov and Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, USA.
  • Mahapatra M; Chemistry Department, Brookhaven National Laboratory, Bldg. 555A, P.O. Box 5000, Upton, New York 11973, USA. rodrigez@bnl.gov.
  • Grinter DC; Chemistry Department, Brookhaven National Laboratory, Bldg. 555A, P.O. Box 5000, Upton, New York 11973, USA. rodrigez@bnl.gov.
  • Xu F; Chemistry Department, Brookhaven National Laboratory, Bldg. 555A, P.O. Box 5000, Upton, New York 11973, USA. rodrigez@bnl.gov.
  • Luo S; Chemistry Department, Brookhaven National Laboratory, Bldg. 555A, P.O. Box 5000, Upton, New York 11973, USA. rodrigez@bnl.gov.
  • Palomino RM; Chemistry Department, Brookhaven National Laboratory, Bldg. 555A, P.O. Box 5000, Upton, New York 11973, USA. rodrigez@bnl.gov.
  • Kattel S; Chemistry Department, Brookhaven National Laboratory, Bldg. 555A, P.O. Box 5000, Upton, New York 11973, USA. rodrigez@bnl.gov.
  • Waluyo I; National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, USA.
  • Liu P; Chemistry Department, Brookhaven National Laboratory, Bldg. 555A, P.O. Box 5000, Upton, New York 11973, USA. rodrigez@bnl.gov.
  • Stacchiola DJ; Chemistry Department, Brookhaven National Laboratory, Bldg. 555A, P.O. Box 5000, Upton, New York 11973, USA. rodrigez@bnl.gov.
  • Senanayake SD; Chemistry Department, Brookhaven National Laboratory, Bldg. 555A, P.O. Box 5000, Upton, New York 11973, USA. rodrigez@bnl.gov.
  • Rodriguez JA; Chemistry Department, Brookhaven National Laboratory, Bldg. 555A, P.O. Box 5000, Upton, New York 11973, USA. rodrigez@bnl.gov and Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, USA.
Phys Chem Chem Phys ; 20(19): 13122-13126, 2018 May 16.
Article em En | MEDLINE | ID: mdl-29737995
ABSTRACT
Disorder-Order transitions in a weakly adsorbed two-dimensional film have been identified for the first time using ambient-pressure scanning tunneling microscopy (AP-STM) and X-ray photoelectron spectroscopy (AP-XPS). As of late, great effort has been devoted to the capture, activation and conversion of carbon dioxide (CO2), a ubiquitous greenhouse gas and by-product of many chemical processes. The high stability and non-polar nature of CO2 leads to weak bonding with well-defined surfaces of metals and oxides. CO2 adsorbs molecularly on the rutile TiO2(110) surface with a low adsorption energy of ∼10 kcal mol-1. In spite of this weak binding, images of AP-STM show that a substantial amount of CO2 can reside on a TiO2(110) surface at room temperature forming two-dimensionally ordered films. We have employed microscopic imaging under in situ conditions, soft X-ray spectroscopy and theory to decipher the unique ordering behavior seen for CO2 on TiO2(110).
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Phys Chem Chem Phys Assunto da revista: BIOFISICA / QUIMICA Ano de publicação: 2018 Tipo de documento: Article País de afiliação: Estados Unidos
Texto completo
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Phys Chem Chem Phys Assunto da revista: BIOFISICA / QUIMICA Ano de publicação: 2018 Tipo de documento: Article País de afiliação: Estados Unidos