本科教学实验氧化石墨烯的制备及其表征

Preparation and characterization of graphene oxide in undergraduate teaching experiment

氧化石墨烯是目前科研中热点最高的材料之一。基于Hummers法制备氧化石墨烯,可以进行水浴加热、离心、温度控制、超声、电极修饰以及电化学表征—循环伏安法等操作,同时可以扩展学生科研视野,激发学生科研探索热情。为了使实验内容适合本科教学实验,对制备方法进行了改进,将整个实验的温度控制在100℃以下,通过冰浴和水浴控制温度,使反应条件相对温和,提高了产量,确保了教学实验的成功率。

Graphene oxide is one of the materials with the hottest applications in current scientific research.This experiment is based on the Hummers method to prepare graphene oxide,which can be operated by water bath heating,centrifugation,temperature control,sonication,electrode modification and cyclic voltammetry by electrochemical characterization method,and can also expand students scientific horizons and stimulate their enthusiasm for scientific exploration.In order to make the experimental content suitable for undergraduate teaching experiments,the preparation method has been improved by controlling the temperature of the whole experiment below 100°C,heating by water bath,relatively mild reaction conditions,and improving the yield,which can ensure the success rate of teaching experiments.