层状氯氧化铋纳米片的制备及其光催化性能测试——大学综合化学实验的设计

Preparation and Photocatalytic Performance of BiOCl Nanosheets: Design of Comprehensive Chemistry Experiment Teaching in Higher Institution

以五水硝酸铋和氯化钾为原料,通过一步式水热合成法制备具有较高光催化活性的层状氯氧化铋催化剂,应用X射线衍射、电子场扫描电镜和紫外可见光谱的表征方法进行材料表征,通过光催化反应研究催化剂对罗丹明B的光催化降解特性。本实验涉及纳米材料的一步式水热合成、纳米材料的结构表征和光催化降解有机污染物的实际应用,综合化学学科知识点于一体。通过实验,本科生能够深入了解并掌握层状氯氧化铋材料的合成和催化性能测试,并且熟悉相关仪器的操作流程,能够把实际教学知识和科研内容有机结合起来,培养并提升学生的化学科研信念和知识储备。

The photocatalyst of BiOCl with high catalytic activity was synthesized by one-pot hydrothermal procedure with bismuth nitrate and potassium chloride. Different characterizations were carried out to identify the physiochemical properties of BiOCl, such as X-ray diffractions(XRD), scanning electron microscope(SEM) and UV-Vis spectra. The catalytic activity was tested by photocatalysis with 300 W Xenon lamp as light source. The experiment involves one-pot hydrothermal synthesis procedure, characterizations and photocatalysis degradation processes of Rhodamine B, which combined the theoretical content together. The college students could better learn the synthesis principle of nanoscale materials and the catalytic degradation process as well as the structure characterization. Through this experiment, the study ability of students could be trained and familiar with the operation of instruments. Moreover, this experiment can motivate the interests of students in scientific research and improve their innovative abilities.