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Constructing a TiO2/PDA core/shell nanorod array electrode as a highly sensitive and stable photoelectrochemical glucose biosensor
Xu, Wei1; Yang, Wenke1; Guo, Hongkai1; Ge, Lianyuan1; Tu, Jinchun1; Zhen, Chao2
Corresponding AuthorTu, Jinchun(tujinchun@hainu.edu.cn) ; Zhen, Chao(czhen@imr.ac.cn)
2020-03-10
Source PublicationRSC ADVANCES
Volume10Issue:17Pages:10017-10022
AbstractDeveloping 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.
Funding OrganizationKey Research and Development Project of the Hainan Province ; National Natural Science Foundation of China
DOI10.1039/c9ra10445c
Indexed BySCI
Language英语
Funding ProjectKey Research and Development Project of the Hainan Province[ZDYF2018106] ; National Natural Science Foundation of China[51762012]
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000520511800029
PublisherROYAL SOC CHEMISTRY
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/137955
Collection中国科学院金属研究所
Corresponding AuthorTu, Jinchun; Zhen, Chao
Affiliation1.Hainan Univ, Coll Mat & Chem Engn, State Key Lab Marine Resource Utilizat South Chin, Haikou 570228, Hainan, Peoples R China
2.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua RD, Shenyang 110016, Peoples R China
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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