High sensitivity of TiO2 nanorod array electrode for photoelectrochemical glucose sensor and its photo fuel cell application

• Published in: Electrochemistry communications Vol. 94; pp. 18 - 22
• Main Authors: He, Lihua, Liu, Quanbing, Zhang, Shenjie, Zhang, Xiangtian, Gong, Chunli, Shu, Honghui, Wang, Guangjin, Liu, Hai, Wen, Sheng, Zhang, Bingqing
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.09.2018
• Subjects: Electricity generating; Photo fuel cell; Photoelectrochemical glucose sensor; Titanium dioxide nanorod array; Electricity generating; Photoelectrochemical glucose sensor; Titanium dioxide nanorod array; Photo fuel cell
• ISSN: 1388-2481; 1873-1902
• DOI: 10.1016/j.elecom.2018.07.021

Due to the separation of the excitation source and detection signal, the use of photoelectrochemical (PEC) glucose sensors is regarded as a promising electrochemical approach offering high sensitivity for glucose analysis by photoelectrocatalytic oxidation of glucose. In this study, we present a PEC glucose sensor based on TiO2 nanorod array (TiO2NRA) electrode, exhibiting high sensitivity of around 200 μA cm−2 mM−1 in glucose detection for the concentrations in the range of 0.01–0.20 mM. Moreover, the TiO2NRA can be fabricated and used in a photo fuel cell (PFC) to generate electricity. This investigation expands the applications of TiO2 and provides a high sensitive way for glucose sensing. [Display omitted] •A non-enzymatic photoelectrochemical (PEC) glucose sensor was constructed.•The PEC sensor is comprised of TiO2 NRA electrode, without any other catalysts.•High sensitivity of 201.5 μA cm−2 mM−1 in glucose detection for the concentrations in the range of 0.01–0.20 mM•Electricity can be generated by photo-oxidizing glucose on TiO2NRA in a photo fuel cell device.•The work expands the applications of TiO2 and provides a high sensitive way for glucose sensing.