Photoelectrochemical Glucose Biosensor Based on the Heterogeneous Facets of Nanocrystalline TiO2/Au/Glucose Oxidase Films

doi:10.1021/acsanm.0c00086

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	Photoelectrochemical Glucose Biosensor Based on the Heterogeneous Facets of Nanocrystalline TiO2/Au/Glucose Oxidase Films
	Yang, Wenke 1; Xu, Wei 1,2; Wang, Yadong 1; Chen, Delun 1; Wang, Xiaohong 1; Cao, Yang 1; Wu, Qiang 3,4; Tu, Jinchun 1; Zhen, Chao 2
刊名	ACS APPLIED NANO MATERIALS
	2020-03-01
卷号	3 期号:3 页码:2723-2732
关键词	TiO2 (001) facets Au glucose oxidase PEC biosensor nanocrystal engineering
ISSN号	2574-0970
DOI	10.1021/acsanm.0c00086
通讯作者	Tu, Jinchun(tujinchun@hainu.edu.cn) ; Zhen, Chao(czhen@imr.ac.cn)
英文摘要	TiO2 single-crystal nanomaterials with highly reactive surfaces have attracted widespread attention due to their fundamental aspects and industrial applications. However, many previous studies have ignored the poor photoelectric efficiency of TiO2 nanomaterials originating from a mismatch in the diffusion distance of electrons and holes as well as migration rates of holes and electrons. Therefore, suppression of hole migration could enhance the photoelectrochemical performance of TiO2. In this work, single-crystal anatase TiO2 nanomaterials with (001) facets were successfully prepared. The results suggested that some (101) facets were retained by the modified fluoride ion crystal facet control process. Subsequently, fluorine-free and Au-containing crystal facets were obtained by annealing and electrochemical deposition. In addition, the propensity for adsorption of Au on a TiO2 (101) surface was verified by first-principles quantum chemical calculations. Electrochemical impedance spectroscopy and UV-visible spectrophotometry showed the presence of a large area (001), conducive to better enzyme affinity. Biosensors prepared by carrier self-separation derived from natural different facets and Au nanoparticles (TiO2 (001)/Au/GOx) achieved high sensitivities reaching 16.86 mu A mM(-1) cm(-2), an extended linear range (0.01-3 mM), and a low detection limit (0.83 mu M). In summary, the proposed route allowed for the first time the use of nanocrystal engineering in the construction of glucose biosensors with satisfactory performances, which is promising for the future fabrication of high-performance biosensors.
资助项目	Key Research and Development Project of Hainan Province[ZDYF2018106] ; National Natural Science Foundation of China[51762012] ; National Natural Science Foundation of China[81860373]
WOS研究方向	Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000526396200064
资助机构	Key Research and Development Project of Hainan Province ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/138530]
专题	金属研究所_中国科学院金属研究所
通讯作者	Tu, Jinchun; Zhen, Chao
作者单位	1.Haitian Univ, State Key Lab Marine Resource Utilizat South Chin, Coll Mat Sci & Engn, Haikou 570228, Hainan, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 3.Hainan Med Univ, Chinese Acad Med Sci, Key Lab Emergency & Trauma, Minist Educ, Haikou 571199, Hainan, Peoples R China 4.Hainan Med Univ, Res Unit Isl Emergency Med, Chinese Acad Med Sci, Haikou 571199, Hainan, Peoples R China
推荐引用方式 GB/T 7714	Yang, Wenke,Xu, Wei,Wang, Yadong,et al. Photoelectrochemical Glucose Biosensor Based on the Heterogeneous Facets of Nanocrystalline TiO2/Au/Glucose Oxidase Films[J]. ACS APPLIED NANO MATERIALS,2020,3(3):2723-2732.
APA	Yang, Wenke.,Xu, Wei.,Wang, Yadong.,Chen, Delun.,Wang, Xiaohong.,...&Zhen, Chao.(2020).Photoelectrochemical Glucose Biosensor Based on the Heterogeneous Facets of Nanocrystalline TiO2/Au/Glucose Oxidase Films.ACS APPLIED NANO MATERIALS,3(3),2723-2732.
MLA	Yang, Wenke,et al."Photoelectrochemical Glucose Biosensor Based on the Heterogeneous Facets of Nanocrystalline TiO2/Au/Glucose Oxidase Films".ACS APPLIED NANO MATERIALS 3.3(2020):2723-2732.