2008
DOI: 10.2174/1874140100802010034
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Glucose Biosensor Based on Chitosan-Gold and Prussian Blue-Gold Nanoparticles

Abstract: Amperometric glucose biosensors were constructed by codeposition of glucose oxidase (GOx) with chitosangold (chitosan-AuNP) on gold-Prussian Blue (Au-PB) nanoparticles modified glassy carbon electrodes (GCE). The high stability of the biosensors was achieved using electrochemically controllable in situ Au-PB film preparation following the film covering with GOx layer encrusted with chitosan-AuNP. The biosensors showed 95 % response time up to 10 s, sensitivity up to 9.5 A M -1 cm -2 and linear calibration grap… Show more

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Cited by 17 publications
(7 citation statements)
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“…The sensor without CS protection showed the PB desorption from the electrode within 10 min. The CS nanocomposite matrix provides better surface protection for the immobilized enzyme when continuous functioning for more than 2 h. [132]. Furthermore, a homogenous CS with Fc and AuNPs-GOx biocomposite film was deposited by simple and controllable electro-catalytic methods to fabricate glucose sensor.…”
Section: Sol-gel Castingmentioning
confidence: 99%
“…The sensor without CS protection showed the PB desorption from the electrode within 10 min. The CS nanocomposite matrix provides better surface protection for the immobilized enzyme when continuous functioning for more than 2 h. [132]. Furthermore, a homogenous CS with Fc and AuNPs-GOx biocomposite film was deposited by simple and controllable electro-catalytic methods to fabricate glucose sensor.…”
Section: Sol-gel Castingmentioning
confidence: 99%
“…Several examples report the growth of gold nanoparticles in the presence of chitosan for different applications. For instance, an amperometric glucose biosensor was constructed by incorporating GOD in the biocompatible hybrid matrix, which was deposited on an electrode previously modified with Au-Prussian Blue (PB) nanoparticles [195]. The Au-chitosan matrix was also employed for immobilization of leukemia cells on electrodes, in order to monitor cell adhesion, proliferation and apoptosis by impedance measurements [196].…”
Section: Bionanocomposites For Sensor Devices and Other Applicationsmentioning
confidence: 99%
“…Several nanocomposites H935 which consist of a mixture of GRP, metal or metal oxide nanoparticles, and CHIT have been fabricated which, altogether, exhibit a new and unambiguous electrochemical behavior. 76,77 In the present work, a TiO 2 /GRP/CHIT nanocomposite modified GCE has been fabricated and shown to exhbit higher electrocatalytic behavior toward the electro-oxidation of TPT as compared to the other three electrodes; i.e., GCE, TiO 2 /GCE, and TiO 2 /GRP/GCE. Furthermore, the analytical application of the proposed method was extended toward its determination in pharmaceutical formulation without any interference from foreign species.…”
mentioning
confidence: 93%