University Chemistry ›› 2019, Vol. 34 ›› Issue (1): 58-63.doi: 10.3866/PKU.DXHX201806030

• Chemistry Laboratory • Previous Articles     Next Articles

Preparation of Gold Nanoparticles and Their Optical Properties

Caiyun NAN,Yu ZHANG,Yufeng LI,Yunling ZHAO*()   

  • Received:2018-06-22 Published:2019-01-16
  • Contact: Yunling ZHAO E-mail:ylzhao@bnu.edu.cn
  • Supported by:
    国家自然科学基金(21606021);北京师范大学青年教师基金(2014NT07);北京师范大学化学国家级实验教学示范中心教改项目;北京师范大学教改项目(15-06-20);北京市教育委员会共建项目;北京师范大学本科教学实验室建设项目

Abstract:

This paper designed a facile comprehensive experiment based on the frontier research topic of gold nanoparticles. The well-dispersed gold suspensions were synthesized by the reduction of chloroauric acid with sodium citrate and their size-dependent optical properties were discussed. Moreover, the gold nanoparticles were explored as primary electrolyte sensors because the addition of electrolytes induced aggregation of the nanoparticles and caused color changes.

Key words: Gold nanoparticle, Optical property, Size, Fundamental experiment

MSC2000: 

  • G64