稀土基二聚夹心型杂化材料的电化学性能研究  

Study on the Electrochemical Properties of Rare Earth Based Dimeric Sandwich Hybrid Materials

作　　者：张晓琳 石强 张军锋[3] 李云燕 龚景 王新梅 郭鑫源 Zhang Xiaolin;Shi Qiang;Zhang Junfeng;Li Yunyan;Gong Jing;Wang Xinmei;Guo Xinyuan(Qiongtai Normal University Key Laboratory of Children's Cognition&Behavior Development of Hainan Province,Haikou Hainan 571127,China;Hainan Branch,China National Coal Group Corporation,Haikou Hainan 571127,China;School of Chemistry and Chemical Engineering,Hainan University,Haikou Hainan 571127,China)

机构地区：[1]琼台师范学院·海南省儿童认知与行为发展重点实验室(筹),海南海口571127 [2]中国中煤能源股份有限公司海南分公司,海南海口571127 [3]海南大学化学化工学院,海南海口571127

出　　处：《山西化工》2024年第10期4-7,共4页Shanxi Chemical Industry

基　　金：海南省自然科学基金项目(221QN0898,221MS0762);海南省儿童认知与行为发展重点实验室科学研究项目(2022YB01);“三全育人”综合改革专项课题(SQYR202205);海南省教育厅科学研究项目(Hnky2024-59)。

摘　　要：在本项研究中,采用常规合成方法,通过探索镧系金属铕与多金属氧酸盐之间的桥接作用,成功地合成了一种纯无机的含铕夹心型多酸杂化物。该杂化物经过了全面的表征,包括红外光谱、紫外-可见光谱、热重分析、电化学测试、荧光光谱分析以及X射线晶体学分析,同时对其在固态和溶液状态下的物理化学性质进行了详尽的探讨。本研究重点考察了杂化物的晶体结构、稳定性及其在长时间内的稳定性保持能力。在室温条件下,对固态荧光性质的分析确认了该杂化物的发光特性,这些特性主要归因于铕离子的独特的配位几何构型。此外,电催化测试中,该杂化物对亚硝酸钾的还原反应表现出了显著的催化活性,这一点从亚硝酸钾存在下氧化峰和还原峰电流的明显变化中得到了证实,从而揭示该杂化物在催化应用领域中的潜在研究价值。In this study,a pure inorganic europium containing sandwich type polyoxometalate hybrid was successfully synthesized by exploring the bridging effect between lanthanide metal europium and polyoxometalates using conventional synthesis methods.The hybrid has undergone comprehensive characterization,including infrared spectroscopy,ultraviolet visible spectroscopy,thermogravimetric analysis,electrochemical testing,fluorescence spectroscopy analysis,and X-ray crystallography analysis.At the same time,its physical and chemical properties in solid and solution states have been thoroughly explored.This study focuses on examining the crystal structure,stability,and ability to maintain stability over a long period of time of hybrid materials.At room temperature,the analysis of solid-state fluorescence properties confirmed the luminescent properties of the hybrid,which are mainly attributed to the unique coordination geometry of europium ions.In addition,in the electrocatalytic test,the hybrid showed significant catalytic activity for the reduction reaction of potassium nitrite,which was confirmed by the significant changes in the oxidation peak and reduction peak currents in the presence of potassium nitrite,thus revealing the potential research value of the hybrid in the field of catalytic applications.

关 键 词：杂化物 铕 电催化 自组装 

分 类 号：O641.4[理学—物理化学] TB34[理学—化学]