将g-C_(3)N_(4)的制备与应用融入综合性化学实验—“上转换”现象探究

Taking g-C_(3)N_(4)into Comprehensive Chemistry Experiment:Exploration of Photon Up-Conversion

以石墨相氮化碳(g-C_(3)N_(4))红光催化降解为实例,将“上转换”现象的探究与现代分析技术的利用相结合,应用于综合性化学实验的教学实践中。本实验以三聚氰胺为原料,热解制备g-C_(3)N_(4)。以罗丹明B溶液模拟废水,在红光(660 nm)光源下考察g-C_(3)N_(4)的光催化降解性能及具有的特殊的“上转换”性能。通过一系列先进的表征手段,探究该新型光催化材料的结构与性质。通过开设该综合性实验,让学生获取催化材料领域的前沿知识,了解仪器分析及评价测试技术的基本原理,掌握相应的实验操作,培养学生的综合实验素质和创新、实践能力。

Photocatalytic degradation experiment is performed by graphitic carbon nitride(g-C_(3)N_(4)) under red light irradiation. The process of photon up-conversion and modern analytical techniques are applied to the comprehensive chemical experiment. g-C_(3)N_(4)was prepared by a sample thermal polymerization method by using melamine as precursor. The photocatalytic degradation of rhodamine B and the special property of photon up-conversion were performed under red-light irradiation(660 nm). The novel photocatalytic material was characterized by a series of test equipment. The comprehensive experiment could enable students to acquire cutting-edge knowledge of catalytic materials, understand the basic principles of instrumental analysis and evaluation test technology, master the corresponding experiment operation, improve students’ comprehensive experimental ability, and train the innovative and practical ability.