Title :
Preparation of gold colloid and its surface-enhanced Raman scattering properties
Author :
Hu, Ling ; Chen, Zhenyi ; Chen, Na ; Zhang, Wei ; Zhu, Hongfei ; Liu, Shupeng ; Wang, Tingyun
Author_Institution :
Key Lab. of Specialty Fiber Opt. & Opt. Access Networks, Shanghai Univ., Shanghai, China
Abstract :
Nanosized colloidal gold was prepared by the reduction of chloroauric acid with trisodium citrate in aqueous solution with microwave heating method. The diameters of gold nanoparticles were from 13 to 70 nm with the ratio of the trisodium citrate and chloroauric acid. With rhodamine 6G (R6G) as the detection molecules, the SERS properties of gold colloid were studied. Experimental results show that the gold colloids with 50-60nm particle diameters are excellent SERS substrates and sodium chloride (NaCl) can improve gold colloid´s surface-enhancement effect.
Keywords :
colloids; gold; microwave heating; nanostructured materials; organic compounds; surface enhanced Raman scattering; Au; SERS properties; SERS substrates; aqueous solution; chloroauric acid; detection molecules; gold colloid; gold nanoparticles; microwave heating method; nanosized colloidal gold; rhodamine 6G; size 13 nm to 70 nm; sodium chloride; surface-enhanced Raman scattering properties; surface-enhancement effect; trisodium citrate; Abstracts; Educational institutions; R6G; SERS; gold nanoparticle; microwave heating; synthesis;
Conference_Titel :
Communications and Photonics Conference and Exhibition, 2011. ACP. Asia
Conference_Location :
Shanghai
Print_ISBN :
978-0-8194-8961-6
