新颖的TiO2@C核壳结构纳米纤维阵列电极制备及其在电化学传感器中的应用  

Fabrication of TiO_2@C Core-shell Nanofiber Arrays Electrode and Its Appdication in Electrochemical Sensing

作　　者：陈荣生[1] 胡良胜[1] 张旭明[1] 付继江[1] 霍开富[1,3] 朱剑豪[3] 程介克[2] 

机构地区：[1]武汉科技大学材料与冶金学院,化学工程与技术学院,武汉430081 [2]武汉大学化学与分子科学学院,武汉430072 [3]香港城市大学物理与材料科学系,中国香港

出　　处：《高等学校化学学报》2008年第12期2542-2544,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:20575056);教育部科学技术研究重点项目(批准号:0208034)资助

摘　　要：In this paper we describe a new method to fabricate TiO2@C core-shell nanofiber arrays for electrochemical sensing.The TiO2@C nanofiber arrays have been produced directly on titanium surface under acetone vapor at 800 ℃.This TiO2@C core-shell nanofiber arrays have the 40 nm TiO2 core in diameter and 5—10 nm carbon shell in thickness and show good electrochemical behaviors.The cyclic voltammogram in 1.0×10-3 mol/L K3Fe(CN)6 is quasi-reversible.The amperometric response increases linearly with the increase of the concentration of dopamine in the range of 1.0×10-7—1.0×10-4 mol/L.The detection limit(S/N=3)of dopamine is 2.45×10-8 mol/L.In this paper we describe a new method to fabricate TiO2@C core-shell nanofiber arrays for electrochemical sensing.The TiO2@C nanofiber arrays have been produced directly on titanium surface under acetone vapor at 800 ℃.This TiO2@C core-shell nanofiber arrays have the 40 nm TiO2 core in diameter and 5—10 nm carbon shell in thickness and show good electrochemical behaviors.The cyclic voltammogram in 1.0×10-3 mol/L K3Fe（CN）6 is quasi-reversible.The amperometric response increases linearly with the increase of the concentration of dopamine in the range of 1.0×10-7—1.0×10-4 mol/L.The detection limit（S/N=3）of dopamine is 2.45×10-8 mol/L.

关 键 词：纳米碳纤维 化学气相沉积 电化学传感器 多巴胺 

分 类 号：O657[理学—分析化学]