Uniform arrays of gold nanoparticles with different surface roughness for surface enhanced Raman scattering |
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| Authors: | Yan Zhang Lian-Meng Wang En-Zhong Tan Shi-He Yang Li-Dong Li Lin Guo |
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| Institution: | a School of Chemistry and Environment, Beihang University, Beijing 100191, China;
b Department of Mathematics and Physics, Beijing Institute of Technology Petrochemical, Beijing 102617, China;
c Department of Chemistry, The Hongkong University of Science and Technology, Clear Water Bay, Kowloon, HongKong, China |
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| Abstract: | Uniform arrays of coarse and smooth gold nanoparticles with diameter about 130 nm were successfully synthesized through seed-mediated growth method, separately. Scanning and transmission electron microscopy (SEM and TEM) and X-ray diffraction (XRD) have been used to study the formation and structure of the nanocomposites. The high enhancement factor for surface-enhanced Raman scattering of coarse and smooth gold nanoparticles were estimated to be about 3.1 × 106 and 2.0 × 106, respectively. It is evident that the coarse gold nanostructures has higher influence factor than the smooth gold nanostructures. Therefore, these unique properties of the coarse Au nanoparticles appear to be very promising for applications as high-performance SERS substrates. |
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| Keywords: | Nanoparticles Different Roughness SERS |
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