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Recyclable and high-sensitivity electrochemical biosensing platform composed of carbon-doped TiO2 nanotube arrays.
Anal Chem. 2011 Nov 01; 83(21):8138-44.AC

Abstract

Electrode fouling and passivation are the main reasons for attenuated signals as well as reduced sensitivity and selectivity over time in electrochemical analysis. We report here a refreshable electrode composed of carbon-doped TiO(2) nanotube arrays (C-doped TiO(2)-NTAs), which not only has excellent electrochemical activity for simultaneous determination of 5-hydroxytryptamine and ascorbic acid but also can be easily photocatalytically refreshed to maintain the high selectivity and sensitivity. The C-doped TiO(2)-NTAs are fabricated by rapid annealing of as-anodized TiO(2)-NTAs in argon. The residual ethylene glycol absorbed on the nanotube wall acts as the carbon source and no foreign carbon precursor is thus needed. The morphology, structure, and composition the C-doped TiO(2)-NTAs are determined, and the corresponding doping mechanism is investigated by thermal analysis and in situ mass spectroscopy. Because of the high photocatalytic activity of the C-doped TiO(2)-NTAs electrode, the electrode surface can be readily regenerated by ultraviolet or visible light irradiation. This photoassisted regenerating technique does not damage the electrode microstructure while rendering high reproducibility and stability.

Authors+Show Affiliations

School of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan, China.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

21928805

Citation

Hu, Liangsheng, et al. "Recyclable and High-sensitivity Electrochemical Biosensing Platform Composed of Carbon-doped TiO2 Nanotube Arrays." Analytical Chemistry, vol. 83, no. 21, 2011, pp. 8138-44.
Hu L, Huo K, Chen R, et al. Recyclable and high-sensitivity electrochemical biosensing platform composed of carbon-doped TiO2 nanotube arrays. Anal Chem. 2011;83(21):8138-44.
Hu, L., Huo, K., Chen, R., Gao, B., Fu, J., & Chu, P. K. (2011). Recyclable and high-sensitivity electrochemical biosensing platform composed of carbon-doped TiO2 nanotube arrays. Analytical Chemistry, 83(21), 8138-44. https://doi.org/10.1021/ac201639m
Hu L, et al. Recyclable and High-sensitivity Electrochemical Biosensing Platform Composed of Carbon-doped TiO2 Nanotube Arrays. Anal Chem. 2011 Nov 1;83(21):8138-44. PubMed PMID: 21928805.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Recyclable and high-sensitivity electrochemical biosensing platform composed of carbon-doped TiO2 nanotube arrays. AU - Hu,Liangsheng, AU - Huo,Kaifu, AU - Chen,Rongsheng, AU - Gao,Biao, AU - Fu,Jijiang, AU - Chu,Paul K, Y1 - 2011/10/04/ PY - 2011/9/21/entrez PY - 2011/9/21/pubmed PY - 2012/3/1/medline SP - 8138 EP - 44 JF - Analytical chemistry JO - Anal. Chem. VL - 83 IS - 21 N2 - Electrode fouling and passivation are the main reasons for attenuated signals as well as reduced sensitivity and selectivity over time in electrochemical analysis. We report here a refreshable electrode composed of carbon-doped TiO(2) nanotube arrays (C-doped TiO(2)-NTAs), which not only has excellent electrochemical activity for simultaneous determination of 5-hydroxytryptamine and ascorbic acid but also can be easily photocatalytically refreshed to maintain the high selectivity and sensitivity. The C-doped TiO(2)-NTAs are fabricated by rapid annealing of as-anodized TiO(2)-NTAs in argon. The residual ethylene glycol absorbed on the nanotube wall acts as the carbon source and no foreign carbon precursor is thus needed. The morphology, structure, and composition the C-doped TiO(2)-NTAs are determined, and the corresponding doping mechanism is investigated by thermal analysis and in situ mass spectroscopy. Because of the high photocatalytic activity of the C-doped TiO(2)-NTAs electrode, the electrode surface can be readily regenerated by ultraviolet or visible light irradiation. This photoassisted regenerating technique does not damage the electrode microstructure while rendering high reproducibility and stability. SN - 1520-6882 UR - https://www.unboundmedicine.com/medline/citation/21928805/Recyclable_and_high_sensitivity_electrochemical_biosensing_platform_composed_of_carbon_doped_TiO2_nanotube_arrays_ L2 - https://dx.doi.org/10.1021/ac201639m DB - PRIME DP - Unbound Medicine ER -