Electron spectroscopy of aqueous solution interfaces reveals surface enhancement of halides

Science

Volumn 307, Issue 5709, 2005, Pages 563-566

  Ghosal, Sutapa ^a,b   Hemminger, John C ^a   Bluhm, Hendrik ^b   Mun, Bongjin Simon ^b   Hebenstreit, Eleonore L D ^b   Ketteler, Guido ^b   Ogletree, D Frank ^b   Requejo, Felix G ^b,c   Salmeron, Miquel ^b  

^a UNIVERSITY OF CALIFORNIA   (United States)

^b LAWRENCE BERKELEY NATIONAL LABORATORY   (United States)

^c FACULTAD DE CIENCIAS EXACTAS   (Argentina)

Author keywords

[No Author keywords available]

Indexed keywords

AEROSOLS; BROMINE COMPOUNDS; COMPUTER SIMULATION; MOLECULAR DYNAMICS; POTASSIUM COMPOUNDS; SURFACE STRUCTURE; X RAY PHOTOELECTRON SPECTROSCOPY;

INTERFACE ENHANCEMENT; IONIC CONCENTRATION; PHOTOELECTRON KINETIC ENERGY; SALINE DROPLETS;

SOLUTIONS;

ANION; HALIDE; POTASSIUM IODIDE;

AEROSOL; SPECTROSCOPY;

AQUEOUS SOLUTION; ARTICLE; CHEMICAL COMPOSITION; CONCENTRATION (PARAMETERS); ENERGY; KINETICS; LIQUID; MOLECULAR DYNAMICS; PRESSURE; PRIORITY JOURNAL; QUALITATIVE ANALYSIS; SIMULATION; SURFACE PROPERTY; VAPOR; X RAY PHOTOELECTRON SPECTROSCOPY;

EID: 12844249938     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.1106525     Document Type: Article

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25. Supported by the Director, Office of Science, Office of Basic Energy Science, U.S. Department of Energy under contract no. DE-AC03-76SD00098 and DE-AC03-76SF00098. J.C.H. and S.G. thank the NSF for support (grants 0080806, 0209719, and 0431312). G.K. thanks the Alexander von Humboldt Foundation for support F.G.R. thanks the Consejo Nacional de Investigaciones Científicas y Técnicas (Argentina). The authors thank D. Tobias and P. Jungwirth for providing the numerical data from their classical MD simulations of 1.2 M alkali-halide solutions, which were used for comparison with the experiments. We thank M. Roeselová for discussion of the preliminary results of classical MD simulations of higher concentration KBr solutions at -100C. S.G. and M.S. thank M. Luna for assistance in the initial phase of this project and J. Newberg for help procuring the single-crystal samples. S.G. also thanks H. Liu for experimental help in the initial phase of these experiments. E. Wong's help and expertise with the technical aspects of the experiments are greatly appreciated.