Support Effects on Electronic Behaviors of Gold Nanoparticles Studied by X-Ray Absorption Fine Structure

doi:10.1063/1.2644658

Title: Support Effects on Electronic Behaviors of Gold Nanoparticles Studied by X-Ray Absorption Fine Structure

Full Record
Similar

Abstract

The electronic properties of gold nanoparticles supported on different supports were studied with X-ray absorption fine structure (XAFS). It was found that the tunability of the d-electron distribution in the nano-sized Au clusters can be realized by selective supporting. The Au atoms in the clusters gain 5d electrons when supported on SiO2, and lose 5d electrons when loaded over MgO, Al2O3, and TiO2. Contractions in bond lengths of between 0.5 and 1.6% from bulk metal values were observed from EXAFS data. This work demonstrates that the important role of the different supports in the 5d-charge distribution of Au nanoparticles and usefulness of XAFS in probing the electronic behavior of noble metal nanoparticles.

Authors:

Li Zhongrui; Yan Wensheng; Wei Shiqiang ^[1]

National Synchrotron Radiation Lab, University of Science and Technology of China, Hefei 230029 (China)

Publication Date:: Fri Feb 02 00:00:00 EST 2007

OSTI Identifier:: 21054740

Resource Type:: Journal Article

Resource Relation:: Journal Name: AIP Conference Proceedings; Journal Volume: 882; Journal Issue: 1; Conference: XAFS13: 13. international conference on X-ray absorption fine structure, Stanford, CA (United States), 9-14 Jul 2006; Other Information: DOI: 10.1063/1.2644658; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; ABSORPTION SPECTRA; ABSORPTION SPECTROSCOPY; BOND LENGTHS; CHARGE DISTRIBUTION; DISTRIBUTION; ELECTRONIC STRUCTURE; ELECTRONS; FINE STRUCTURE; GOLD; MAGNESIUM OXIDES; NANOSTRUCTURES; PARTICLES; TITANIUM OXIDES; X-RAY SPECTRA; X-RAY SPECTROSCOPY

Citation Formats


                    Li Zhongrui, Yan Wensheng, and Wei Shiqiang. Support Effects on Electronic Behaviors of Gold Nanoparticles Studied by X-Ray Absorption Fine Structure.  United States: N. p., 2007. 
        Web.  doi:10.1063/1.2644658.

Copy to clipboard


                    Li Zhongrui, Yan Wensheng, & Wei Shiqiang. Support Effects on Electronic Behaviors of Gold Nanoparticles Studied by X-Ray Absorption Fine Structure.  United States.  doi:10.1063/1.2644658.

Copy to clipboard


                    Li Zhongrui, Yan Wensheng, and Wei Shiqiang. Fri .  
        "Support Effects on Electronic Behaviors of Gold Nanoparticles Studied by X-Ray Absorption Fine Structure".  United States.  
        doi:10.1063/1.2644658.

Copy to clipboard


                    
@article{osti_21054740,

  title        = {Support Effects on Electronic Behaviors of Gold Nanoparticles Studied by X-Ray Absorption Fine Structure},

  author       = {Li Zhongrui and Yan Wensheng and Wei Shiqiang},

  abstractNote = {The electronic properties of gold nanoparticles supported on different supports were studied with X-ray absorption fine structure (XAFS). It was found that the tunability of the d-electron distribution in the nano-sized Au clusters can be realized by selective supporting. The Au atoms in the clusters gain 5d electrons when supported on SiO2, and lose 5d electrons when loaded over MgO, Al2O3, and TiO2. Contractions in bond lengths of between 0.5 and 1.6% from bulk metal values were observed from EXAFS data. This work demonstrates that the important role of the different supports in the 5d-charge distribution of Au nanoparticles and usefulness of XAFS in probing the electronic behavior of noble metal nanoparticles.},

  doi          = {10.1063/1.2644658},

  journal      = {AIP Conference Proceedings},

  number       = 1,

  volume       = 882,

  place        = {United States},

  year         = {Fri Feb 02 00:00:00 EST 2007},

  month        = {Fri Feb 02 00:00:00 EST 2007}

}

Copy to clipboard

Journal Article:

DOI: 10.1063/1.2644658

Other availability

Find in Google Scholar

Search WorldCat to find libraries that may hold this journal

Save / Share:

Export Metadata

Save to My Library

Probing the Limits of Conventional Extended X-ray Absorption Fine Structure Analysis Using Thiolated Gold Nanoparticles

Chill, S ; Anderson, R ; Yancey, D ; ... - ACS Nano
DOI: 10.1021/acsnano.5b00090
Probing the Limits of Conventional Extended X-ray Absorption Fine Structure Analysis Using Thiolated Gold Nanoparticles

Chill, Samuel T. ; Anderson, Rachel M. ; Yancey, David F. ; ... - ACS Nano
Cited by 15
DOI: 10.1021/acsnano.5b00090
Pd-Pt Catalysts on Fluorinated Alumina Support Studied by X-Ray Absorption Fine Structure

Yan Wensheng ; Li Zhongrui ; Wei Zheng ; ... - AIP Conference Proceedings

A series of bi-metallic Pd-Pt catalysts supported on both pristine and fluorinated alumina supports were investigated with x-ray absorption spectroscopy. It was found that Pd and Pt form small alloy particles on the pristine alumina support; the composition and the cluster size of the PdPt bimetallic alloys, and the electronic properties of the metals were significantly altered on the fluorinated support. The remarkable increase in sulfur tolerance of the PdPt metallic clusters supported on the fluorine pretreated alumina can be attributed to an electronic depletion of the metals, large particle size and direct participation of the acid sites in themore » reaction.« less
DOI: 10.1063/1.2644641
Electronic states and local structures of the photomagnetic Cu-Mo cyanides Cu{sub 2}Mo(CN){sub 8}{center_dot}8H{sub 2}O and Cs{sub 0.5}Cu{sub 1.75}Mo(CN){sub 8}{center_dot}1.5H{sub 2}O studied by x-ray absorption fine structure spectroscopy

Ma Xiaodong ; Yokoyama, Toshihiko ; Institute for Molecular Science, Myodaiji-cho, Okazaki, Aichi 444-8585 ; ... - Physical Review. B, Condensed Matter and Materials Physics

The electronic states and local structures of photomagnetic CuMo cyanides, Cu{sub 2}Mo(CN){sub 8}{center_dot}H{sub 2}O and Cs{sub 0.5}Cu{sub 1.75}Mo(CN){sub 8}{center_dot}1.5H{sub 2}O, have been studied by Cu and Mo K-edge x-ray-absorption fine-structure spectroscopy. A direct evidence for the reduction of divalent Cu to monovalent is detected by Cu K-edge x-ray-absorption near-edge structure. The extended x-ray-absorption fine-structure confirms that the interatomic distances around Cu and Mo in the photoinduced phase are almost identical to those of the initial low-temperature phase. The higher-nearest neighbor coordination numbers, however, are apparently reduced. We have interpreted this as the result of the bending of the Mo-CN bondmore »« less
DOI: 10.1103/PhysRevB.72.094107
Electronic and atomic structure of Mn-doped CaF sub 2 : An x-ray-absorption near-edge structure and extended x-ray-absorption fine-structure study

Barkyoumb, J.H. ; Mansour, A.N. - Physical Review, B: Condensed Matter; (United States)

X-ray-absorption near-edge structure (XANES) and extended-x-ray-absorption fine-structure (EXAFS) measurements have been performed on the calcium {ital K} edge and manganese {ital K} edge of CaF{sub 2} doped with manganese at molecular concentrations of 0.1--2.5 %. The results are compared to other measurements of the calcium {ital K} edge in CaF{sub 2} and the Mn {ital K} edge in various manganese compounds. Major features in the XANES spectra are tentatively identified with transitions to high-symmetry points of the CaF{sub 2} energy bands in a one-electron picture. Expected deviations from the structure predicted by the one-electron formalism are discussed. The EXAFS analysismore »« less
DOI: 10.1103/PhysRevB.46.8768