普鲁士蓝薄膜的电化学制备及其光电性质研究

Electrochemical Preparation of Prussian Blue Thin Films and Investigation of Their Photoelectric Properties

在创新教育背景下,设计普鲁士蓝薄膜合成及其光电性质研究的教学实验,将科学研究成果引入大学综合实验中。采用简单电化学沉积法,在ITO导电玻璃表面制备得到普鲁士蓝膜,利用扫描电子显微镜、X射线衍射、循环伏安法、紫外-可见吸收光谱等研究普鲁士蓝薄膜的物理化学性质。基于大学生在化学实验中已掌握的实验技能,结合已有的电化学综合实验,设计搭建原位紫外-可见光谱电化学及光电流测试平台。通过具体的实验操作,在了解普鲁士蓝与普鲁士白等相互转化原理的基础上,进一步认识普鲁士蓝电致变色现象及光电流产生的过程,以此激发学生对光电化学实验的兴趣,有助于学生科学发散思维的拓展和实验技能的提高。

In the context of innovative education,experiments on the synthesis of Prussian blue films and investigation of their photoelectric properties are proposed to introduce the results of scientific research into comprehensive university experiments.The Prussian blue film was prepared on the surface of ITO-conductive glass by simple electrochemical polymerization methods,and the physical and chemical properties of Prussian blue film were studied by scanning electron microscopy,X-ray diffraction,cyclic voltammetry,and UV-Vis absorption spectroscopy,among other methods.Based on the experimental skills already acquired by the university students in chemistry experiments,we designed and built an in situ UV-Vis spectroscopy electrochemical and photocurrent test platform in combination with the existing comprehensive electrochemical experiments.Through specific experiments and by understanding the principle of mutual transformation of Prussian blue and Prussian white,the electrochromic phenomenon and photocurrent generation of Prussian blue were further understood;this stimulated students’interest in photoelectrochemical experiments and helped them expand their scientific divergent thinking and improve their experimental skills.