文献类型：期刊文献

英文题名：Sensitive determination of thymol based on CeO₂ nanoparticle-decorated graphene hybrid film

作者：Zhao, Xiaojuan[1,2];Du, Yongling[1];Ye, Weichun[1];Lu, Daban[1];Xia, Xiaohong[1];Wang, Chunming[1]

第一作者：Zhao, Xiaojuan;赵晓娟

通信作者：Wang, CM[1]

机构：[1]Lanzhou Univ, Sch Chem & Chem Engn, Lanzhou 730000, Peoples R China;[2]Gansu Coll Tradit Chinese Med, Lanzhou 730000, Peoples R China

第一机构：Lanzhou Univ, Sch Chem & Chem Engn, Lanzhou 730000, Peoples R China

通信机构：[1]corresponding author), Lanzhou Univ, Sch Chem & Chem Engn, Lanzhou 730000, Peoples R China.

年份：2013

卷号：37

期号：12

起止页码：4045

外文期刊名：NEW JOURNAL OF CHEMISTRY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000326984000033)】；

基金：This work is financially supported by the National Nature Science Foundation of China (No. 20775030).

语种：英文

摘要：A novel thymol electrochemical sensor based on a CeO2 nanoparticle-decorated graphene hybrid was introduced. The hybrid was characterized by X-ray diffraction, transmission electron microscopy and X-ray photoelectron spectroscopy. The electrochemical behavior of thymol on the CeO2/graphene modified glassy carbon electrode was investigated in pH 7.0 phosphate buffer solution by cyclic voltammetry and differential pulse voltammetry. Compared with the bare glassy carbon electrode, the proposed electrode showed improved analytical performance characteristics in catalytic oxidation of thymol. Under the selective conditions, the modified electrode showed a linear voltammetric response for the thymol within a concentration range of 1.0 x 10(-7) to 1.8 x 10(-5) mol L-1, and a value of 5.0 x 10(-8) mol L-1 was calculated for the detection limit (S/N = 3). Furthermore, good selectivity with high sensitivity was obtained for the determination of thymol in real samples.