碳量子点/立方氧化铈纳米复合体系可见光光催化综合实验设计

Comprehensive experimental design on visible light photocatalytic property of CQDs/CeO_2 nanocomposite

为引入新的技术和方法拓展学生的视野,激发学生探索未知的兴趣,设计了一个半导体物理实验的创新型实验。纯氧化铈光催化剂由于较宽的带隙而无法充分利用可见光进行光催化,将碳量子点与半导体氧化铈光催化剂复合,基于碳量子点具有上转换功能,将可见光转化为紫外-近紫外光,有效提高了复合体系可见光光催化性能。该实验方法简单,实验重复性好,易于学生操作。该实验能够激励学生的求知欲望、提高学生的实验创新技能、培养学生的科学素养,提高了教学质量的目的。

In order to broaden the students＇ vision and stimulate their interest in exploring the unknown.a semiconductor physical experiment of innovative experiment is designed.Because of the wide band gap,pure CeO2 photocatalyst unable to make full use of visible light,this article uses the carbon quantum dots compound with CeO2,due to the performance of the carbon quantum dots on up-conversion fluorescence that can convert visible light to Uv-near ultraviolet light,so the visible light catalytic efficiency could be improved significantly.The experimental method is simple and the experimental repeatability is good,so it is easy to be operated by undergraduates.The experiment can inspire students＇ learning desire,improve their experimental innovation skills,and cultivate their scientific literacy so as to achieve the purpose of improving teaching quality.