Constructing a TiO2/PDA core/shell nanorod array electrode as a highly sensitive and stable photoelectrochemical glucose biosensor

doi:10.1039/c9ra10445c

IMR OpenIR

	Constructing a TiO2/PDA core/shell nanorod array electrode as a highly sensitive and stable photoelectrochemical glucose biosensor
	Xu, Wei; Yang, Wenke; Guo, Hongkai; Ge, Lianyuan; Tu, Jinchun; Zhen, Chao
	2020-03-10
Source Publication	RSC ADVANCES
Volume	10 Issue:17 Pages:10017-10022
Abstract	Developing stable PEC glucose biosensors with high sensitivity and low detection limit is highly desirable in the biosensor field. Herein, a highly stable and sensitive enzymatic glucose photoelectrochemical biosensor is rationally designed and fabricated by constructing TiO2/PDA core/shell nanorod arrays. The TiO2 nanorod as the core has the advantages of increasing charge transportation towards interfaces and enhancing the absorption of incident sunlight due to its single-crystal nature and one dimensional array structure. The PDA shell not only induces a rapid charge transfer across the interfaces but also stabilizes the biosensor performance by avoiding the decomposition of enzymes induced by the strong oxidizing holes from the TiO2 core. A remarkable performance with an ultrahigh sensitivity of 57.72 mu A mM(-1) cm(-2), a linear range of 0.2-1.0 mM, a glucose detection limit of 0.0285 mM (S/N = 3) and a high sensitivity of 8.75 mu A mM(-1) cm(-2) in a dynamic range of 1.0-6.0 mM were obtained for the glucose detection. This study might provide a strategy for constructing inorganic/organic core/shell structures with a satisfactory PEC performance.
DOI	10.1039/c9ra10445c
WOS ID	WOS:000520511800029
Citation statistics	Cited Times:1[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.imr.ac.cn/handle/321006/83049
Collection	中国科学院金属研究所
Recommended Citation GB/T 7714	Xu, Wei,Yang, Wenke,Guo, Hongkai,et al. Constructing a TiO2/PDA core/shell nanorod array electrode as a highly sensitive and stable photoelectrochemical glucose biosensor[J]. RSC ADVANCES,2020,10(17):10017-10022.
APA	Xu, Wei,Yang, Wenke,Guo, Hongkai,Ge, Lianyuan,Tu, Jinchun,&Zhen, Chao.(2020).Constructing a TiO2/PDA core/shell nanorod array electrode as a highly sensitive and stable photoelectrochemical glucose biosensor.RSC ADVANCES,10(17),10017-10022.
MLA	Xu, Wei,et al."Constructing a TiO2/PDA core/shell nanorod array electrode as a highly sensitive and stable photoelectrochemical glucose biosensor".RSC ADVANCES 10.17(2020):10017-10022.

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