Acta Chimica Sinica ›› 2012, Vol. 70 ›› Issue (03): 259-264.DOI: 10.6023/A1108121 Previous Articles     Next Articles

Full Papers


杨传孝, 孙向英, 刘斌   

  1. 华侨大学材料科学与工程学院 厦门 361021
  • 投稿日期:2011-08-12 修回日期:2011-11-01 发布日期:2011-11-14
  • 通讯作者: 杨传孝, 孙向英,
  • 基金资助:

    国家自然科学基金(No. 20955001)、国务院侨办科研基金(No. 09QZR05)和华侨大学基本科研业务费专项基金(No. JB-ZR1118)资助项目.

Controllable Synthesis of Chitosan-Mediated Gold Nanoplate and the Growth Mechanisms

Yang Chuanxiao, Sun Xiangying, Liu Bin   

  1. College of Materials Science and Engineering, Huaqiao University, Xiamen 361021
  • Received:2011-08-12 Revised:2011-11-01 Published:2011-11-14
  • Supported by:

    Project supported by the National Natural Science Foundation of China (No. 20955001), the Foundation of Overseas-Chinese Affairs Office of the State Council of China (No. 09QZR05) and the Fundamental Research Funds for the Huaqiao University (No. JB-ZR1118).

By chitosan as a stabilizer and reducing agent, the tunable surface plasmon resonance (SPR) absorption peak of gold nanoplate has been successfully fabricated by water bath heating of solution containing HAuCl4, chitosan and gold nanoseeds. The SEM images indicated that the gold nanoplates were mainly composed of triangular and truncated triangular shape. The edge is about 170 nm. X-ray diffraction analyses indicated that the gold nameplates were pure single crystals with {111} planes as their basal planes. The growth mechanisms on synthesis of chitosan-mediated gold nanoplate were discussed. Under optimum conditions the SPR absorption peak of gold nanoplate in-plane dipolar is 920 nm. The experiment results showed that the near-infrared SPR absorption peak and the absorption intensity can be effectively controlled by controlling the amounts of chitosan and gold seeds, water bath temperature and bath time.

Key words: gold nanoplate, chitosan, surface plasmon resonance absorption