Fabrication of Au/SnO2 Nanocomposites Based on 3D Structures of Butterfly Wing Scales and Research on Its SERS Effects

doi:10.3724/SP.J.1077.2012.11698

Journal of Inorganic Materials ›› 2012, Vol. 27 ›› Issue (9): 917-922.DOI: 10.3724/SP.J.1077.2012.11698

• Research Paper • Previous Articles Next Articles

Fabrication of Au/SnO₂ Nanocomposites Based on 3D Structures of Butterfly Wing Scales and Research on Its SERS Effects

LIU Bo-Yang, ZHANG Wang, HE Zhao-Wen, ZHANG Di

(Shanghai Jiao Tong University, State Key Laboratory of Metal Matrix Composites, Shanghai 200240, China)

Received:2011-11-08 Revised:2012-03-19 Published:2012-09-20 Online:2012-08-28
About author:LIU Bo-Yang(1985-).E-mail: dllmby@sjtu.edu.cn
Supported by:
National Natural Science Foundation of China (51001070); Shanghai Science and Technology Committee (10JC1407600); Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry (Z1029903)

Abstract

Abstract: Scales from fore wings ofPapilio paris was used as templates, by ringing the original fore wings in the precursor and treatment by calcinations, SnO₂ (rutile) which inherited the 3D quasi-periodic structures of original wing scale was fabricated. After that, Au nanoparticles were incorporated in the system of as-prepared SnO₂ to form the Au/SnO₂ nanocomposites. XRD, SEM and TEM were carried out to investigate the morphologies, structures and elemental composition. For measuring Surface-enhanced Raman Scattering (SERS) effects of the Au/SnO₂ substrate, R6G was used as analyte molecules. By analyzing morphologies of this nanocomposites and UV-Vis DRS spectra of different substrates, mechanisms of SERS effects for this Au/SnO₂ nanocomposites substrate were analyzed. The three-dimensional nanostructures of the substrate provide large quantities of Raman ‘hot spots’, meanwhile, the SnO₂ and Au make synergetic contribution to the enhancement effects. The satisfying SERS properties combined with low synthesis costs show the prospective application possibilities of this novel SERS substrate.

Key words: butterfly wing scale, 3D quasi-periodic structure, Au/SnO₂, SERS

CLC Number:

O433

LIU Bo-Yang, ZHANG Wang, HE Zhao-Wen, ZHANG Di. Fabrication of Au/SnO₂ Nanocomposites Based on 3D Structures of Butterfly Wing Scales and Research on Its SERS Effects[J]. Journal of Inorganic Materials, 2012, 27(9): 917-922.

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Fabrication of Au/SnO₂ Nanocomposites Based on 3D Structures of Butterfly Wing Scales and Research on Its SERS Effects

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