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- W3146543181 abstract "Nano biosensor development for biomedical and environmental measurements has been tried by research groups all over the world. Identifying and fabricating suitable nano-materials as enzyme immobilizing matrices to enhance characteristics of the sensor is the most important and difficult task of it. In this chapter we discuss about polypyrrole(PPy) nano-tube array grown on Alumina Anodisc to serve this purpose successfully. When this novel PPy nano-tube array sensor was used as a glucose biosensor, Glucose Oxidase(GOx) entrapment has been done by three different methods (for single sided PPy arrays), ie. Co-entrapment, physical adsorption and cross-linking aided physical adsorption. Best results were shown with the latter method with a sensitivity of 62.53 mA/cm2/M with a 4s response time. When the electrode was fabricated as a double-layered PPy nano-tube array, the sensitivity was increased up to 90 mA/cm/M compared to the 7.4 mA/cm/M for physical adsorption. A similar type of single sided sensor has been used to monitor Hydrogen Peroxide(H2O2) by using Horseradish Peroxidase (HRP) as the catalyst. This sensor worked both in anodic and cathodic modes adding the bi-functional feature to the enhanced characteristics. Anodic mode gave a high sensitivity of 3.8A/cm/M and cathodic mode gave a linear range of 5nM to 25μM while showing 5s response time in both features." @default.
- W3146543181 created "2021-04-13" @default.
- W3146543181 creator A5087970922 @default.
- W3146543181 date "2011-01-01" @default.
- W3146543181 modified "2023-09-27" @default.
- W3146543181 title "Nano-Biosensor Development for Biomedical and Environmental Measurements" @default.
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