大学化学 >> 2020, Vol. 35 >> Issue (9): 103-109.doi: 10.3866/PKU.DXHX201909003

化学实验 上一篇    下一篇

金纳米粒子的制备及在汞离子检测中的应用——推荐一个分析化学综合实验

汪宝堆(), 李天荣, 海军, 梁永民, 杨正银   

  • 收稿日期:2019-09-02 录用日期:2019-10-18 发布日期:2019-11-12
  • 通讯作者: 汪宝堆 E-mail:wangbd@lzu.edu.cn

Synthesis of Gold Nanoparticles and Its Application in Mercury Ion Detection

Baodui Wang(), Tianrong Li, Jun Hai, Yongmin Liang, Zhengyin Yang   

  • Received:2019-09-02 Accepted:2019-10-18 Published:2019-11-12
  • Contact: Baodui Wang E-mail:wangbd@lzu.edu.cn

摘要:

通过柠檬酸钠还原氯金酸,合成了金纳米粒子(Au NPs)。结合荧光和紫外-可见光谱分析来探究金汞合金催化降解罗丹明B(RhB)体系对汞离子检测的灵敏度和选择性。本实验有益于激发学生的科研兴趣和探索精神,可训练学生的综合实验操作技能和主观能动性,加深其对纳米粒子制备、表征、催化反应知识和金属离子分析方法的理解与运用,达到进一步培养学生的创新思维和科学精神。

关键词: 金纳米粒子, 罗丹明B, 汞离子, 检测

Abstract:

Gold nanoparticles (Au NPs) were synthesized by reducing HAuCl4 with sodium citrate. The sensitivity and selectivity of gold amalgam catalytic degradation of rhodamine B (RhB) system for mercury detection were investigated by fluorescence spectroscopy and ultraviolet-visible absorption spectroscopy. In the experiment, students' interest in scientific research and exploratory spirit will be stimulated, students' comprehensive experimental operation skills and subjective initiative will be improved, the understanding and application of nanoparticles preparation, characterization, catalytic reaction knowledge and metal ion analysis methods will be enhanced. Furthermore, the innovative thinking and scientific spirit of the students will be cultivated.

Key words: Au nanoparticles, Rhodamine B, Hg2+, Detection

MSC2000: 

  • G64