In the ever-evolving landscape of modern technology,the exploration and advancement of novel materials have garnered significant interest and acclaim.This paper takes an engaging narrative approach,portraying a dialogue between a small wearable sensor and Reduced Graphene Oxide(RGO),to elucidate the intricacies of RGO's preparation,application,and development.As a new composite material,RGO has emerged as a compelling contender in various technological fields.

As one of the important concepts in the electrochemical part in physical chemistry,the determination of ion migration number is involved in the physical chemistry experiment course in various universities.Literature research and our past teaching practices have shown that the ion migration number measured using the Hittorf method differs significantly from the literature values.In order to reduce the measurement errors and investigate the influencing factors of the test results,this experiment made improvements in three aspects:controlling the amount of solution,the sequence of solution/electricity disconnection,and the calculation of the quantity of electricity.After minimizing the errors caused by experimental operations and concentration measurement,the factors that truly influence the measurement results of ion migration number were analyzed.The experimental results indicated that when using current multiplied by time as the data source for the quantity of electricity and calculating the ion migration number using the cathodic solution,the obtained results were closer to the reference value.

针对高校化学实验室安全管理工作中的难题,搭建化学品安全监管平台,实现化学品的"闭环"精细化管理;以虚拟仿真体验为特色,建设集安全教育资源、安全考试考核、安全准入认证、安全管理等功能为一体的智慧化学实验室安全准入平台,积极探索实验室安全准入平台的学习流程和运行管理机制.通过化学实验室安全体系的构建和实施,消除化学品的安全隐患,增强学生的安全责任意识,减少安全事故的发生,保障化学实验室安全.

信息技术与实验教学的融合是适应新时代一流人才培养要求的必然趋势.物理化学实验教学团队针对当前实验教学的不足,建设了物理化学实验智慧教学平台,实现了教学资源、实验过程评价和教学管理的信息化.教学资源的信息化建设能够促进翻转实验教学的实施,并有效提高学生的自主学习能力.实验过程评价的信息化建设能够培养学生的反思意识和自我修正能力,有利于学生的个性化培养.教学管理的信息化建设能够促进学生自我管理能力的提高,加强师生的交流互动,保障创新教学模式的有效实施.

A series of supported CuO catalysts and its aged samples,using CeO2,Al2O3 and CeO2/Al2O3 with different loading of CeO2 as the supports,were prepared by impregnation method.Characterization of their structure and redox properties by XRD and H2-TPR showed that CuO were well dispersed over CeO2/Al2O3 support both in fresh and aged CuO/CeO2/Al2O3 catalysts,indicating that the catalysts had good resistance to sintering.Effects of different supports and loadings of CeO2 and CuO were investigated and comparison was made between CuO/CeO2/Al2O3 and Pd/CeO2/Al2O3.The three-way catalytic activity of aged CuO/CeO2/Al2O3 catalyst calcined at high temperature was tested.The results showed that CuO/CeO2/Al2O3 catalyst with CuO loadings of 7% and supported on 10%CeO2/Al2O3 exhibited superior three-way catalytic activity,with superior activity to that of Pd/CeO2/Al2O3 especially at lower temperature and light-off temperature for CO,HC and NOx of 130 ℃,250 ℃ and 250 ℃,respectively,and conversion of 90% for the three pollutants at 350 ℃.CuO/CeO2/Al2O3 also exhibited good resistance to aging.