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
  • Supported by:


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