荧光碳点检测铁离子的科研成果转化为教学实践  

Scientific Research Results of Iron Ion Detection by Fluorescent Carbon Dots Have been Transformed into Teaching Practice

作　　者：韩韬 王群 苗彩琴 周欣 颜美 果崇申 HAN Tao;WANG Qun;MIAO Cai-qin;ZHOU Xin;YAN Mei;GUO Chong-shen(Department of Materials Chemistry,School of Chemical Engineering and Chemistry,Harbin Institute of Technology,Harbin 150006,China)

机构地区：[1]哈尔滨工业大学化工与化学学院材料化学系,黑龙江哈尔滨150006

出　　处：《化工管理》2023年第6期5-8,共4页Chemical Engineering Management

摘　　要：为了强化学生的绿色低碳意识,基于学科交叉和双碳战略的教育教学思想,文章以三乙醇胺和醋酸锌为前驱体,使用水热法制备了氮掺杂纳米碳点荧光功能材料,通过X射线衍射、透射电镜、傅里叶红外光谱等测试手段表征了碳点的物相成分、组织结构及化学键和表面基团等信息;再利用紫外-可见吸收光谱和荧光光谱探究了碳点轨道间电子的跃迁行为;并基于Fe^(3+)与碳点表面官能团配位络合而导致荧光猝灭的机理,实现了对Fe^(3+)的特异性检测。后采用启发式教学,以小组为单位进行实验设计、实验操作及汇报总结,使得学生能够深钻细研荧光碳点相关理论,潜心发现和捕捉科研关键点,培养逻辑论证和独立思考能力,形成荧光纳米碳点知识体系。In order to strengthen the students’awareness of green and low carbon,based on the interdisciplinary and dual carbon strategy,nitrogen-doped carbon dots fluorescent functional materials were prepared by hydrothermal route using triethanolamine and zinc acetate as precursors.Furthermore,the phase composition,tissue structure and chemical bond composition and group information of carbon dots were characterized by X-ray diffraction,transmission electron microscopy and fourier infrared spectroscopy.The transport behavior of electrons between carbon dots orbitals has been probed using UV-Vis absorption;specific detection of Fe^(3+)based on ligand complexation of Fe^(3+)with functional groups on the surface of carbon dots lead to fluorescence quenching.Through the heuristic teaching approach,students were divided into groups to design,operate experiments and report summaries.Finally,students are able to deeply master the theory of fluorescent carbon dots,discovering and capturing key points of scientific research,develop logical argumentation and independent thinking skills,and form a fluorescent nano-carbon dots knowledge system.

关 键 词：碳点 Fe^(3+)特异性检测 综合实验设计 科研转化 

分 类 号：TP212.14[自动化与计算机技术—检测技术与自动化装置]