生物炭负载ZnO光催化剂的合成及其催化降解有机染料实验设计

Design of Experiment on Synthesis of Biochar Supported ZnO Photocatalyst and Catalytic Degradation of Organic Dye

实验设计以生物质和醋酸锌为原料,一步原位热解制备了ZnO-生物炭复合光催化剂。用XRD、Raman、SEM、N2吸附-脱吸附等技术手段对样品进行表征。以亚甲基蓝作为有机染料模型,通过设计对照实验,研究了复合光催化剂对有机染料的光催化降解性能。实验过程涉及材料研究的典型步骤,实验内容具有综合性、简易性和新颖性的特点,对培养学生的综合实践能力、理论联系实际能力、环境保护及创新意识很有帮助。

The cultivation of comprehensive skills and innovative ability in experimental practice is an important component of applied undergraduate teaching. In this experiment,ZnO-biochar composite photocatalyst was prepared by an in-situ pyrolysis of biomass and zinc acetate. The samples were characterized by XRD,Raman,SEM and N2 adsorption-desorption technologies. The photocatalytic degradation performance of the catalysts on organic dyes was studied by designing control experiments with methylene blue as the organic dye model. The experimental process involved the typical steps of material research. The experimental content was characterized by comprehensiveness,simplicity and novelty. It is helpful for cultivating students’ comprehensive practical ability,theoretical connection with practical ability,environmental protection and innovation consciousness.