Enhancing the reactivity of gold: Nanostructured Au(111) adsorbs CO

Hoffmann, F. M.; Hrbek, J.; Ma, S.; Park, J. B.; Rodriguez, J. A.; Stacchiola, D. J.; Senanayake, S. D.

doi:10.1016/j.susc.2015.11.021

Title: Enhancing the reactivity of gold: Nanostructured Au(111) adsorbs CO

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Abstract

Low-coordinated sites are surface defects whose presence can transform a surface of inert or noble metal such as Au into an active catalyst. Starting with a well-ordered Au(111) surface we prepared by ion sputtering gold surfaces modified by pits, used microscopy (STM) for their structural characterization and CO spectroscopy (IRAS and NEXAFS) for probing reactivity of surface defects. In contrast to the Au(111) surface CO adsorbs readily on the pitted surfaces bonding to low-coordinated sites identified as step atoms forming {111} and {100} microfacets. As a result, pitted nanostructured surfaces can serve as interesting and easily prepared models of catalytic surfaces with defined defects that offer an attractive alternative to vicinal surfaces or nanoparticles commonly employed in catalysis science.

Authors:

Hoffmann, F. M. ^[1]; Hrbek, J. ^[2]; Ma, S. ^[2]; Park, J. B. ^[2]; Rodriguez, J. A. ^[2]; Stacchiola, D. J. ^[2]; Senanayake, S. D. ^[2]

Borough of Manhattan Community College, New York, NY (United States)
Brookhaven National Lab. (BNL), Upton, NY (United States)

Publication Date:: Wed Dec 02 00:00:00 EST 2015

Research Org.:: Brookhaven National Lab. (BNL), Upton, NY (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1303022

Alternate Identifier(s):: OSTI ID: 1333202; OSTI ID: 1373615

Report Number(s):: BNL-112518-2016-JA; BNL-113207-2016-JA
Journal ID: ISSN 0039-6028; R&D Project: CO009; KC0302010

Grant/Contract Number:: SC00112704; 11 DE-SC0012704

Resource Type:: Accepted Manuscript

Journal Name:: Surface Science

Additional Journal Information:: Journal Volume: 650; Journal Issue: C; Journal ID: ISSN 0039-6028

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; CO adsorption; sputtered Au(111) surface; STM; IRAS; NEXAFS

Citation Formats


                    Hoffmann, F. M., Hrbek, J., Ma, S., Park, J. B., Rodriguez, J. A., Stacchiola, D. J., and Senanayake, S. D. Enhancing the reactivity of gold: Nanostructured Au(111) adsorbs CO.  United States: N. p., 2015. 
Web.  doi:10.1016/j.susc.2015.11.021.

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                    Hoffmann, F. M., Hrbek, J., Ma, S., Park, J. B., Rodriguez, J. A., Stacchiola, D. J., & Senanayake, S. D. Enhancing the reactivity of gold: Nanostructured Au(111) adsorbs CO.  United States.  https://doi.org/10.1016/j.susc.2015.11.021

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                    Hoffmann, F. M., Hrbek, J., Ma, S., Park, J. B., Rodriguez, J. A., Stacchiola, D. J., and Senanayake, S. D. Wed .  
"Enhancing the reactivity of gold: Nanostructured Au(111) adsorbs CO".  United States.  https://doi.org/10.1016/j.susc.2015.11.021.  https://www.osti.gov/servlets/purl/1303022.

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@article{osti_1303022,

  title        = {Enhancing the reactivity of gold: Nanostructured Au(111) adsorbs CO},

  author       = {Hoffmann, F. M. and Hrbek, J. and Ma, S. and Park, J. B. and Rodriguez, J. A. and Stacchiola, D. J. and Senanayake, S. D.},

  abstractNote = {Low-coordinated sites are surface defects whose presence can transform a surface of inert or noble metal such as Au into an active catalyst. Starting with a well-ordered Au(111) surface we prepared by ion sputtering gold surfaces modified by pits, used microscopy (STM) for their structural characterization and CO spectroscopy (IRAS and NEXAFS) for probing reactivity of surface defects. In contrast to the Au(111) surface CO adsorbs readily on the pitted surfaces bonding to low-coordinated sites identified as step atoms forming {111} and {100} microfacets. As a result, pitted nanostructured surfaces can serve as interesting and easily prepared models of catalytic surfaces with defined defects that offer an attractive alternative to vicinal surfaces or nanoparticles commonly employed in catalysis science.},

  doi          = {10.1016/j.susc.2015.11.021},

  journal      = {Surface Science},

  number       = C,

  volume       = 650,

  place        = {United States},

  year         = {Wed Dec 02 00:00:00 EST 2015},

  month        = {Wed Dec 02 00:00:00 EST 2015}

}

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