开放实验:微电场下氯化钠水溶液的结构和物理性质  

Innovative Experiment:Study on the Solution Structure and Physical Properties of NaCl Aqueous Solution Under Micro Electric Field

作　　者：李非[1,2] 张丁予 冯明远 于晓晴 何艳 张婷婷 刘杰 郭小甫 汪婧[1,2] 纪志永 郎利影 LI Fei;ZHANG Ding-Yu;FENG Ming-Yuan;YU Xiao-Qing;HE Yan;ZHANG Ting-Ting;LIU Jie;GUO Xiao-Fu;WANG Jing;JI Zhi-Yong;LANG Li-Ying(School of Chemical Engineering and Technology,Hebei University of Technology.Engineering Research Center of Seawater Utilization,Ministry of Education,Tianjin 300401,China;Hebei Collaborative Innovation Center of Modern Marine Chemical Technology,Tianjin 30040l,China;School of Architecture or Art Design,Hebei University of Technology,Tianjin 30040l,China;Undergraduate School.Hebei University of Technology,Tianjin 300401,China)

机构地区：[1]河北工业大学化工学院海水资源高效利用化工技术教育部工程研究中心,天津300401 [2]河北省现代海洋化工技术协同创新中心,天津300401 [3]河北工业大学建筑与艺术设计学院,天津300401 [4]河北工业大学本科生院,天津300401

出　　处：《化学教育（中英文）》2024年第20期43-50,共8页Chinese Journal of Chemical Education

基　　金：教育部第二批新工科研究与实践项目(E-XTYR20200610);教育部创新团队发展计划项目(IRT14R14);国家自然科学基金项目(21978064);河北省自然科学基金项目(E2020202020);河北省高等教育教学改革研究与实践项目(2020GJJG029);河北省研究生教育教学改革研究项目(YJG2023021)。

摘　　要：电渗析法海水制盐是一项成熟的工业技术,可替代传统日晒法海水制盐,但电场作用下离子迁移过程尚不够明晰,对其理论认知亟需推进。从外电场对氯化钠水溶液结构的影响入手,设计综合性开放实验:以电渗析实际操作条件为依据,选取0 V和4.5 V直流电压条件,指导本科生应用拉曼光谱法和分子动力学模拟2种手段表征和分析有无电场下NaCl水溶液的微观结构,并测试溶液黏度,尝试将溶液的微观结构与宏观物理性质进行关联,引导学生探索事物的微观本质,激发创新意识。实验整体具有高阶性、创新性和挑战度。Electrodialysis used for seawater salt production is a mature industrial technology,but the microscopic nature of the ion migration process under the electric field is not clear.Combined with the characteristics of electrodialysis electric field strength and solution structure research methods,innovative experiments were designed to explore the microstructure of the solution.Molecular dynamics simulation and Raman spectroscopy were used to study the microstructure of NaCl aqueous solution under O V and 4.5 V electric field conditions.The viscosity was analyzed to explore the relationship between the physical properties and the microstructure of the solution.The experiments are high-ordered,innovative and challenging,students will be guided to explore the microscopic nature of materials and will be cultivated innovative thinking.

关 键 词：开放实验 溶液结构 电渗析 黏度 

分 类 号：TQ131.12-4[化学工程—无机化工] G642[文化科学—高等教育学]