| Photoelectrochemical Glucose Biosensor Based on the Heterogeneous Facets of Nanocrystalline TiO2/Au/Glucose Oxidase Films | |
| Yang, Wenke1; Xu, Wei1,2; Wang, Yadong1; Chen, Delun1; Wang, Xiaohong1; Cao, Yang1; Wu, Qiang3,4; Tu, Jinchun1; Zhen, Chao2 | |
| Corresponding Author | Tu, Jinchun(tujinchun@hainu.edu.cn) ; Zhen, Chao(czhen@imr.ac.cn) |
| 2020-03-01 | |
| Source Publication | ACS APPLIED NANO MATERIALS
 |
| ISSN | 2574-0970 |
| Volume | 3Issue:3Pages:2723-2732 |
| Abstract | 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. |
| Keyword | TiO2 (001) facets Au glucose oxidase PEC biosensor nanocrystal engineering |
| Funding Organization | Key Research and Development Project of Hainan Province ; National Natural Science Foundation of China |
| DOI | 10.1021/acsanm.0c00086 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Key Research and Development Project of Hainan Province[ZDYF2018106] ; National Natural Science Foundation of China[51762012] ; National Natural Science Foundation of China[81860373] |
| WOS Research Area | Science & Technology - Other Topics ; Materials Science |
| WOS Subject | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
| WOS ID | WOS:000526396200064 |
| Publisher | AMER CHEMICAL SOC |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/138531 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Tu, Jinchun; Zhen, Chao |
| Affiliation | 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 |
| Recommended Citation 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. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment