高等学校化学学报 ›› 2020, Vol. 41 ›› Issue (7): 1492-1498.doi: 10.7503/cjcu20200089

• 研究论文: 无机化学 • 上一篇    下一篇

组氨酸修饰普鲁士蓝的制备及与银离子的作用

刘兆阳,宋永新,王天舒,单桂晔*()   

  1. 东北师范大学物理学院, 紫外光发射材料与技术教育部重点实验室, 长春 130024
  • 收稿日期:2020-02-20 出版日期:2020-07-10 发布日期:2020-03-30
  • 通讯作者: 单桂晔 E-mail:shangy229@nenu.edu.cn
  • 基金资助:
    国家自然科学基金(11774048)

Preparation of Histidine Modified Prussian Blue and Its Interaction with Silver Ions

LIU Zhaoyang,SONG Yongxin,WANG Tianshu,SHAN Guiye*()   

  1. Key Laboratory of UV-Emitting Materials and Technology of Ministry of Education, School of Physics, Northeast Normal University, Changchun 130024, China
  • Received:2020-02-20 Online:2020-07-10 Published:2020-03-30
  • Contact: Guiye SHAN E-mail:shangy229@nenu.edu.cn
  • Supported by:
    † National Natural Science Foundation of China(11774048)

摘要:

利用水热法合成了组氨酸修饰的普鲁士蓝(HisPB). 通过扫描电子显微镜(SEM), X射线衍射(XRD)以及紫外-可见分光光度计(UV-Vis)等对合成的HisPB样品进行了形貌和结构表征. 与未经修饰的普鲁士蓝(PB)相比, 组氨酸修饰的普鲁士蓝粒子体积更大, 表面更光滑, 表面官能团增多, 这些因素显著提升了普鲁士蓝在碱性溶液中的稳定性. 确定了HisPB用于检测银离子的最佳pH值为10, 通过监测HisPB与银离子反应后其紫外光谱在800 nm处的吸收峰强度变化以及溶液颜色的改变, 实现了对6~40 μmol/L浓度范围内银离子的检测.

关键词: 组氨酸, 普鲁士蓝, 银离子, 比色检测

Abstract:

The histidine modified Prussian blue(HisPB) was synthesized via hydrothermal method. Scanning electron microscopy(SEM), X-ray diffraction(XRD) and ultraviolet spectrophotometer(UV-Vis) were used to characterize the morphology and structures of the synthesized histidine modified Prussian blue. The volume of histidine modified Prussian blue increased and the surface became smoother. Meanwhile, the functional groups of histidine modified Prussian blue increased. These factors significantly improved the stability of Prussian blue in alkaline solution. The optimal pH value of silver ion detected by HisPB was determined to be 10. Silver ions were detected in a linear range of 6—40 μmol/L by monitoring the changes in absorption peak strength at 800 nm and the changes in color of the solution after the reaction of HisPB with silver ions.

Key words: Histidine, Prussian blue, Silver ion, Colorimetric detection

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