Abstract：Colloidal gold was prepared by sodium citrate-induced reduction of hydrogen tetrachloroaurate. Colloidal silver was prepared by the reduction of silver nitrate by sodium borohydride respectively. The gold and silver sols were characterized by means of UV-Vis, SEM and CVs. Results show that the gold and silver colloids were a monodisperse suspension with the average size of 16 and 10 nm respectively; Ordered sub-monolayer structure of gold and silver nanoparticles on the ITO was fabricated by self-assembly technique. The CV character of gold and silver nanoparticles features a pair of asymmetrical ox-red peaks separately，moreover, the positions of these peaks are influenced by the concentrations of gold and silver nanoparticles. Ordered double-layer structures of gold/silver nanoparticles on roughened gold substrates were obtained by self-assembly method, where benzidine was used as the coupling molecules. The results of surface-enhanced Raman spectroscopic characterization show that Raman scattering of benzidine molecules during self-assembly is enhanced.
Key words：Gold and silver nanoparticles;CV;Surface-enhanced Raman scattering(SERS);Benzidine
孙如，顾仁敖*. 金银纳米粒子的电化学性质及联苯胺的SERS研究[J]. 光谱学与光谱分析, 2006, 26(12): 2240-2243.
SUN Ru, GU Ren-ao*. Electrochemical Character of Gold/Silver Nanoparticles and SERS Studies on Benzidine. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(12): 2240-2243.
[1] Decher G, Hong J D, Schmitt J. Thin Solid Film, 1992, 210/211: 831. [2] Frens G. Nat. Phys. Sci., 1973, 241: 20. [3] Doron A, Kalz E, Willner I. Langmuir, 1995, 11: 13. [4] Lee P C, Melsel D. J. Phys. Chem., 1982, 86: 3391. [5] Kometani N, Tsubonishi M, Fujita T, et al. Langmuir, 2001, 17: 578. [6] LI Shu-jin, JIANG Yun, QIU Li-qun, et al(李淑瑾, 蒋 芸, 仇立群, 等). Chinese Journal of Light Scattering(光散射学报), 2003, 15(4): 254. [7] GU Ren-ao, CAO Wen-dong, CAO Pei-gen, et al(顾仁敖, 曹文东, 曹佩根，等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2001, 21(3): 308. [8] Shirtcliffe N, Nickel U, Schneider S. J. Colloid Interface Sci., 1999, 211: 122. [9] Zhu T, Fu X Y, Mu T, et al. Langmuir, 1999, 15: 5197. [10] Emory S R, Nie S. J. Phys. Chem. B, 1998, 102: 493. [11] Brolo A G, Irish D E- Szymanski G, et al. Langmuir, 1998, 14: 517. [12] Akalin E, Akyüz S. Journal of Molecular Structure, 2003, 651-653: 571. [13] ZHOU Hai-hui, WU De-yin, HU Jian-qiang, et al(周海辉, 吴德印, 胡建强，等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2005, 25(7): 1068.
