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Preparation and Sensing Property of Nano ZnO Enzyme Electrode on Flexible Substrate

Author: CuiYong
Tutor: LiJinHua
School: Changchun University of Science and Technology
Course: Condensed Matter Physics
Keywords: ZnO nanomaterials Flexible substrates Glucose sensor
CLC: TP212.3
Type: Master's thesis
Year: 2011
Downloads: 51
Quote: 0
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Abstract


With the development of the world economy, the diabetic patients showed an upward trend, due to the way its no cure, the World Health Organization diabetes is one of the four disease as a serious threat to human health. Early detection of early treatment to reduce the patient's illness and treatment costs to the greatest degree. Detection of diabetes is based on detection of blood glucose concentration. Timely with the body detect blood glucose concentration on the early detection of early treatment of diabetes is especially important. Glucose biosensors in blood glucose testing procedures which play an important role. Preparation of the people for the ordinary hard substrate glucose sensor enzyme electrode reported more, and the preparation of glucose enzyme sensor electrode for flexible substrates reported rare study the flexible substrate glucose oxidase electrode implanted and With the advantages of high sensitivity, short response time. ZnO nanomaterials prepared a broad research and application prospects of one of the hot material in the field of biosensors. Flexible substrate polyimide has a portable collapsible bending many advantages, the prepared the nano ZnO enzyme electrode polyimide achieve timely blood glucose detection with the body. Polyimide flexible substrate hydrothermally grown ZnO nanorods by X-ray diffraction, scanning electron microscopy, light-induced luminescence and testing means crystal quality characterization the ZnO nanorods preparation of glucose oxidase electrode its glucose biosensing characteristics. Mainly include the following: (1) by hydrothermal method in the deposition of silver (Ag) film polyimide flexible substrate surface of ZnO nanorods, through the analysis of the crystal structure and optical properties derived Ag as a seed layer can ZnO nanomaterials prepared better. Ag can be used as a seed layer of ZnO is because the silver film of the surface of the flexible substrate along the {111} plane growth of the small projections, ZnO on its surface can nucleating Although growth. (2) the use of electrostatic adsorption method self-assembled the ZnO nanorods glucose oxidase electrode, and Fourier transform infrared spectroscopy tests prove fixed to maintain the activity of the enzyme at the electrode surface, while the use of three-electrode electrochemical workstation enzyme electrode electric chemical sensing properties of the enzyme electrode of the glucose sensor at a concentration of 1.52 × 10-3mmol / L to 4.2mmol / L range with a good linear relationship, while the time for fast response of 4.6S.

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation components,parts > Transmitter ( converter),the sensor > Biological sensors,medical sensors
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