ZIF-67的制备与表征——推荐一个综合化学实验

Synthesis and Characterization of ZIF-67:A Comprehensive University Chemical Experiment

本文推荐一个适于化学和化工专业开设的大学综合化学实验,沸石咪唑酯骨架结构材料-ZIF-67的制备与表征。以2-甲基咪唑和六水合硝酸钴为原料,在室温下搅拌半小时即可快速制备得到ZIF-67。并通过X-射线粉末衍射(PXRD)、扫描电子显微镜(SEM)、热重分析仪(TGA)、傅里叶变换红外光谱仪(FTIR)和比表面孔径分析仪(BET)等对样品的形貌、晶体结构及热稳定性进行了表征。该实验具有原料廉价易得、实验条件简单和操作简便等特点。通过本实验,学生能够掌握理解金属有机框架(MOFs)材料的合成与表征的知识与技能,掌握SEM、PXRD、FTIR、TGA和BET等仪器的使用及基本原理。本实验综合了有机化学、无机化学和分析化学等专业知识,有利于培养学生实验技能和综合创新能力,激发学生的科研兴趣。

A university chemical comprehensive experiment was recommended, which is suitable for the students of chemistry and chemical engineering majors. 2-Methylimidazole and cobalt nitrate hexahydrate are used as starting materials to synthesis of ZIF-67 by stirred at room temperature for 0.5 h, and the morphology, crystal structure and thermal stability of samples are well characterized by powder X-ray diffraction(PXRD), scanning electron microscope(SEM), thermogravimetric analyzer(TGA), Fourier transform infrared(FTIR) and Brunauer-Emmett-Teller(BET). The aforementioned experiment has the advantages of cheap raw materials, simple experimental operation and reaction conditions. Through this recommended experiment, students can master the knowledge and skills of the synthesis and characterization of metal-organic framework(MOFs) materials, and basic principles and operation of PXRD, SEM, TGA, FTIR, BET and other instruments. Furthermore, the recommended experiment involves the knowledge of organic chemistry, inorganic chemistry and analytical chemistry, which is conducive to cultivating students’ experimental skills and comprehensive innovation ability, and stimulates students’ interest in scientific research.