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Fe-substituted titanate nanosheets intercalated with hemoglobin for direct electrochemistry.
Biosens Bioelectron. 2009 Dec 15; 25(4):948-51.BB

Abstract

Fe-substituted titania nanosheets (FTNS) are used as support matrixes for hemoglobin (Hb) immobilization and protein electrode fabrication to study the direct electron transfer between the redox centers of proteins and the electrode. X-ray diffraction (XRD) and high-resolution transmission electron microscope (HRTEM) reveal that the Hb-FTNS composite has an ordered layered structure with a monolayer arrangement in the interlayers. The native structure of the intercalated Hb is maintained, as indicated by the ultraviolet-visible (UV-vis) and Fourier-transform infrared (FTIR) spectroscopy. The Hb-FTNS modified electrode shows a fast direct electron transfer for the Hb Fe(III)/Fe(II) redox couple and exhibits good electrocatalytic properties for the reduction of H(2)O(2). The sensitivity of Hb-FTNS modified electrode for the reduction of H(2)O(2) is 156mAM(-1)cm(-2) in the linear range of 2-65 microM, which is 18 times higher than that of Hb-titania nanosheets modified electrode (8.54mAM(-1)cm(-2)), suggesting that the Fe doping maybe an efficient method to improve the electrochemical performance of TNS for biosensors, biofuel cells and bioelectronics applications.

Authors+Show Affiliations

Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, People's Repblic of China.No 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

19767193

Citation

Shi, Linpu, et al. "Fe-substituted Titanate Nanosheets Intercalated With Hemoglobin for Direct Electrochemistry." Biosensors & Bioelectronics, vol. 25, no. 4, 2009, pp. 948-51.
Shi L, Gao Q, Wu Y, et al. Fe-substituted titanate nanosheets intercalated with hemoglobin for direct electrochemistry. Biosens Bioelectron. 2009;25(4):948-51.
Shi, L., Gao, Q., Wu, Y., Chen, Z., & Liu, A. (2009). Fe-substituted titanate nanosheets intercalated with hemoglobin for direct electrochemistry. Biosensors & Bioelectronics, 25(4), 948-51. https://doi.org/10.1016/j.bios.2009.08.040
Shi L, et al. Fe-substituted Titanate Nanosheets Intercalated With Hemoglobin for Direct Electrochemistry. Biosens Bioelectron. 2009 Dec 15;25(4):948-51. PubMed PMID: 19767193.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Fe-substituted titanate nanosheets intercalated with hemoglobin for direct electrochemistry. AU - Shi,Linpu, AU - Gao,Qiuming, AU - Wu,Yihua, AU - Chen,Zhi, AU - Liu,Airong, Y1 - 2009/09/01/ PY - 2009/06/12/received PY - 2009/08/12/revised PY - 2009/08/26/accepted PY - 2009/9/22/entrez PY - 2009/9/22/pubmed PY - 2010/1/14/medline SP - 948 EP - 51 JF - Biosensors & bioelectronics JO - Biosens Bioelectron VL - 25 IS - 4 N2 - Fe-substituted titania nanosheets (FTNS) are used as support matrixes for hemoglobin (Hb) immobilization and protein electrode fabrication to study the direct electron transfer between the redox centers of proteins and the electrode. X-ray diffraction (XRD) and high-resolution transmission electron microscope (HRTEM) reveal that the Hb-FTNS composite has an ordered layered structure with a monolayer arrangement in the interlayers. The native structure of the intercalated Hb is maintained, as indicated by the ultraviolet-visible (UV-vis) and Fourier-transform infrared (FTIR) spectroscopy. The Hb-FTNS modified electrode shows a fast direct electron transfer for the Hb Fe(III)/Fe(II) redox couple and exhibits good electrocatalytic properties for the reduction of H(2)O(2). The sensitivity of Hb-FTNS modified electrode for the reduction of H(2)O(2) is 156mAM(-1)cm(-2) in the linear range of 2-65 microM, which is 18 times higher than that of Hb-titania nanosheets modified electrode (8.54mAM(-1)cm(-2)), suggesting that the Fe doping maybe an efficient method to improve the electrochemical performance of TNS for biosensors, biofuel cells and bioelectronics applications. SN - 1873-4235 UR - https://www.unboundmedicine.com/medline/citation/19767193/Fe_substituted_titanate_nanosheets_intercalated_with_hemoglobin_for_direct_electrochemistry_ DB - PRIME DP - Unbound Medicine ER -