Surface Enhanced Raman Scattering on Cu2O/Ag Composite

Chem. J. Chinese Universities ›› 2011, Vol. 32 ›› Issue (8): 1789.

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Surface Enhanced Raman Scattering on Cu2O/Ag Composite

WANG Yun-Xin², SONG Wei¹, YANG Jing-Xiu¹, XU Wei-Qing¹, ZHAO Bing^1*

1. State Key Laboratory for Supramolecular Structure and Materials, Jilin University, Changchun 130012, China;
2. Jilin Center for Disease Control and Prevention, Changchun 130062, China

Received:2011-02-28 Revised:2011-05-04 Online:2011-08-10 Published:2011-07-19
Contact: ZHAO Bing E-mail:zhaobing@jlu.edu.cn
Supported by:
国家自然科学基金(批准号: 20873050, 20921003, 20973074, 20903044, 21073072)资助.

Abstract

Abstract: Cu2O/Ag composite was prepared by using a very simple chemical reduction method. The SEM images indicated that Ag nanoparticles are deposited on the surface of octahedral Cu2O particles which were smooth and symmetrical. The surface of bare Cu2O particles is surrounded by large quantities of Ag nanoparticles, but is not form a compact shell. 4-Mpy molecules can be adsorbed not only on the surface of Ag nanoparticles, but also on the surface of Cu2O particles. The SERS enhancement on silver nanoparticles can be attributed to electromagnetic enhancement and chemical enhancement. On the other hand, Ag nanoparticles would also excite localized surface plasmon resaonace under the irradiation with suitable laser light, further enhancing the SERS signals of 4-MPy adsorbed on the near Cu2O particles. This method is exhibites some information on the catalatic properties of the surface of the octahedral Cu2O particles and provides a new kind of materials for SERS applications.

Key words: Cu2O, Ag nanoparticle, Surface-enhanced Raman scattering

CLC Number:

O657

TrendMD:

WANG Yun-Xin, SONG Wei, YANG Jing-Xiu, XU Wei-Qing, ZHAO Bing*. Surface Enhanced Raman Scattering on Cu2O/Ag Composite[J]. Chem. J. Chinese Universities, 2011, 32(8): 1789.

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Surface Enhanced Raman Scattering on Cu2O/Ag Composite

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