CeO₂ Nanorods Embedded in Ni(OH)₂ Matrix for the Non-Enzymatic Detection of Glucose

Yongjian Li; Panpan Guan; Fucheng Yu; Wei Li; Xiaoling Xie

doi:10.3390/nano7080205

CeO₂ Nanorods Embedded in Ni(OH)₂ Matrix for the Non-Enzymatic Detection of Glucose

Nanomaterials (Basel). 2017 Jul 31;7(8):205. doi: 10.3390/nano7080205.

Authors

Yongjian Li¹, Panpan Guan², Fucheng Yu³, Wei Li⁴, Xiaoling Xie⁵

Affiliations

¹ Department of Material Science, Taiyuan University of Technology, Taiyuan 030024, China. Leeyj2015@163.com.
² Department of Material Science, Taiyuan University of Technology, Taiyuan 030024, China. guanpanpan@139.com.
³ School of Material Science, Lanzhou University of Technology, Lanzhou 730050, China. yufc72@163.com.
⁴ Department of Material Science, Taiyuan University of Technology, Taiyuan 030024, China. liwei03@tyut.edu.cn.
⁵ Department of Material Science, Taiyuan University of Technology, Taiyuan 030024, China. xiexl2003@126.com.

Abstract

The electrode based on cerium oxide (CeO₂) nanorods embedded in nickel hydroxide (Ni(OH)₂) matrix were prepared and used for detecting glucose non-enzymatically. The materials were characterized by X-ray diffraction, transmission electron microscopy (TEM), and so on. The results indicate that the response of CeO₂/Ni(OH)₂ nanocomposite are significantly improved due to the synergetic effect between CeO₂ and Ni(OH)₂. The optimum CeO₂/Ni(OH)₂ nanocomposite electrode exhibits a detection range from 2 μM to 6.62 mM, a sensitivity of 594 μA mM^-1 cm^-2, an estimated detection limit of 1.13 μM, and a response time less than 5 s. In addition, this biosensor also shows good selectivity, long term stability, and accurate measurement in juice on sale.

Keywords: biosensor; cerium oxide; glucose; nanocomposite; nickel hydroxide.