Synthesis of Ultra-Uniform Gold Spherical Nanoparticles with Different Sizes and Their SERS Effects Study
JIANG Si-wen1, LI Xia2, ZHANG Yue-jiao3, ZHU Gen-song1*, LI Jian-feng3*
1. Mining and Metallurgical Engineering Department of College of Applied Science, Jiangxi University of Science and Technology，Ganzhou 341000, China 2. Technology Center, China Tobacco Zhejiang Industrial Co. Ltd., Hangzhou 310024, China 3. College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
Abstract：A series of ultra-uniform gold spherical nanoparticles with different sizes were synthesized using gold chloride acid as precursor, ascorbic acid as reductant and sodium citrate hydrate as surfactant. The prepared Au nanoparticles were characterized by scanning electron microscope (SEM) and UV-visible spectroscopy. The results showed that the absorption peak of UV-Vis spectroscopy red-shifted along with size increasing of the nanoparticles and finally appeared a quadrupole peak. To further explore the mechanism of surface enhanced Raman spectroscopy (SERS) effect and optimize the sensitivity, SERS on Au nanoparticles with different sizes were measured using Rhodamine 6G (R6G) as probe molecule. We found the SERS signals of R6G on the Au nanoaprtciles were highly size dependent. When the particles sizes are close to ～120 nm, it will generate the highest enhancement, the enhancement factor is about 1.1×107. The 3D-FDTD simulation results correlated with the experimental data very well.
蒋思文1，李 霞2，张月皎3，朱根松1*，李剑锋3* . 不同粒径、超均匀球形金纳米粒子合成及其表面增强拉曼散射效应研究 [J]. 光谱学与光谱分析, 2016, 36(01): 99-103.
JIANG Si-wen1, LI Xia2, ZHANG Yue-jiao3, ZHU Gen-song1*, LI Jian-feng3* . Synthesis of Ultra-Uniform Gold Spherical Nanoparticles with Different Sizes and Their SERS Effects Study . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2016, 36(01): 99-103.
[1] Fleischmann M, Hendra P J, McQuillan A J. Chem. Phys. Lett., 1974, 26: 163. [2] Jeanmaire D L, Van Duyne R P. J. Electroanal. Chem., 1977, 84: 1. [3] Albrecht M G, Creighton J A. J. Am. Chem. Soc., 1977, 99: 5215. [4] Kneipp K, Wang Y, Kneipp H, et al. Phys. Rev. Lett., 1997, 78: 1667. [5] Nie S M, Emery S R. Science, 1997, 275: 1102. [6] Moskovits M. Rev. Mod. Phys., 1985, 57: 783. [7] Anker J N, Hall W P, Lyandres O, et al. Nat. Mater., 2008, 7: 442. [8] Tian Z Q, Ren B, Li J F, et al. Chem. Commun., 2007. 3514. [9] Wu D Y, Li J F, Ren B, et al. Chem. Soc. Rev., 2008, 37: 1025. [10] Lu L H, Wang H, Zhou Y, et al. Chem. Commun., 2002. 144. [11] Santra S, Zhang P, Wang K, et al. Anal. Chem., 2001, 73: 4988. [12] Brown K R, Lyon A, Fox A P, et al. Chem. Mater., 2000, 12: 314. [13] Jana N R, Gearheart L, Murphy C J. J. Phys. Chem. B, 2001, 105: 4065. [14] Rodriguez-Fernandez J, Perez-Juste J, Abajo F J, et al. Langmuir, 2006, 22: 7007. [15] Fang P P, Li J F, Yang Z L, et al. J. Raman Spectrosc., 2008, 39: 1679. [16] Link S, El-Sayed M A. J. Phys. Chem. B, 1999, 103: 4212. [17] Tiwari V S, Oleg T, Darbha G K, et al. Chem. Phys. Lett., 2007, 446: 77. [18] Yang K H, Liu Y C, Yu C C. J. Mater. Chem., 2008, 18: 4849. [19] Lin X M, Cui Y, Xu Y H, et al. Anal. Bioanal. Chem., 2009, 394: 1729.
