Journal of Jilin University Science Edition

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Raman Spectra of Ultratrace Amount of Molecules in NanoAg Sols

TIAN Yanjie1, OUYANG Shunli2, HAN Guoxia1, LI Dailin1, ZHU Huafeng1   

  1. 1. Department of Fundamental Physics, College of Science, China University of Petroleum, Qingdao 266555,Shandong Province, China; 2. Key Laboratory of Integrated Exploitation of Bayan Obo Multimetal Resources,Inner Mongolia University of Science and Technology, Baotou 014010, Inner Mongolia Autonomous Region, China
  • Received:2012-11-26 Online:2013-09-26 Published:2013-09-17
  • Contact: TIAN Yanjie E-mail:tianyj@upc.edu.cn

Abstract:

Ag colloidal particles in a size range of about 80—90 nm were prepared by silver nitrate solution reduced with sodium citrate.  We collected the surfaceenhanced Raman spectra of 10-13 mol/L aqueous R6G via 1 mW of laser power and 5 s of integration time. 10-11 mol/L aqueous R6G was detected by airdried Agfilm method. When the density of Ag colloidal particles decreased, then the ability of surfaceenhanced Raman scattering decreased rapidly.

Key words: surfaceenhanced Raman scattering, R6G, ultratrace amount of molecules

CLC Number: 

  • O433.5