【作者】 温思思； 高木； 宋薇； 赵冰；

【Author】 WEN Si-si;GAO Mu;SONG Wei;ZHAO Bing;State Key Laboratory of Supramolecular Structure and Materials,Jilin University;Alan G.MacDiarmid Institute,College of Chemistry,Jilin University;

【机构】 吉林大学超分子结构与材料国家重点实验室； 吉林大学化学学院麦克德尔米德实验室；

【摘要】 近年来MnCo₂O₄材料由于其优异的催化活性和导电性在超级电容器、锂离子电池、CO₂还原燃料电池等方面被广泛应用。MnCo₂O₄表面富含氧化态的Mn²⁺/Mn³⁺和Co²⁺/Co³⁺使其成为较好的类氧化物酶基底的电子传输介质^[1]。表面增强拉曼光谱技术是一种超灵敏的分子检测手段,类氧化物酶材料与贵金属复合,可以构筑一种氧化物酶与SERS协同增强活性的基底材料,以SERS技术来研究类氧化物酶催化分子反应的过程^[2]。这里,我们通过MnCo₂O₄与贵金属Au复合,由于MnCo₂O₄和Au纳米粒子之间的协同作用,MnCo₂O₄@Au纳米纤维复合材料比单独MnCo₂O₄和Au展现出更好的SERS活性及很好的类氧化物酶活性,进一步这种材料还可以检测有害的重金属离子。这种MnCo₂O₄@Au纳米类氧化物酶复合材料SERS基底在生物传感器、环境保护和食品安全方面具有广阔的应用前景。更多还原

【Abstract】 In recent years,MnCo₂ O₄ materials have been widely studied for their broad applications in supercapacitors,lithium ion batteries,and CO₂ reduction fuel cells due to their excellent catalytic activity andconductivity.The surface of MnCo₂ O₄ is rich in the oxidation state of Mn²⁺/Mn³⁺and Co²⁺/Co³⁺,providing it a good electron transfer medium for oxidase-like substrates.Surface enhanced Raman spectroscopy（SERS） technology is an ultra-sensitive molecular detection method.The fabrication of oxidase-like MnCo₂ O₄@Au nanofibers could synergistically enhances the oxidase activity of the oxides due to the synergistic effect between MnCo₂ O₄ and Au nanoparticles,which has been used as efficient SERS substrate to study the oxidation process of the oxidase-like catalyticreaction^[2].This material can also be used for the detection of harmful heavy metal ions.The oxidase-like MnCo₂ O₄@Au nanofibers as SERS substrate shows broad prospects in biosensors,environmental protection and food safety.更多还原