Electrochemical study of ferrocene intercalated vanadium pentoxide xerogel/polyvinyl alcohol composite films: Application in the development of amperometric biosensors
Φόρτωση...
Ημερομηνία
Συγγραφείς
Tsiafoulis, C. G.
Florou, A. B.
Trikalitis, P. N.
Bakas, T.
Prodromidis, M. I.
Τίτλος Εφημερίδας
Περιοδικό ISSN
Τίτλος τόμου
Εκδότης
Elsevier
Περίληψη
Τύπος
Είδος δημοσίευσης σε συνέδριο
Είδος περιοδικού
peer reviewed
Είδος εκπαιδευτικού υλικού
Όνομα συνεδρίου
Όνομα περιοδικού
Electrochemistry Communications
Όνομα βιβλίου
Σειρά βιβλίου
Έκδοση βιβλίου
Συμπληρωματικός/δευτερεύων τίτλος
Περιγραφή
A detailed electrochemical study of a novel composite film based on ferrocene intercalated vanadium pentoxide xerogel/polyvinyl alcohol (FeCp(2)/VXG PVA-SbQ) and its potential use in the development of amperometric biosensors is presented. FeCp(2)-VXG was characterized with X-ray powder diffraction, Mossbauer spectroscopy, energy dispersive spectroscopy and IR-spectroscopy suggesting a molecular formula close to (FeCp(2))(0.37)center dot V(2)O(5)center dot nH(2)O. Composite films of (FeCp(2))(0.37)center dot V(2)O(5)center dot nH(2)O with PVA-SbQ were developed over a glassy carbon electrode. Cyclic voltammetry experiments showed that composite films exhibit reversible, almost charge-transfer controlled redox functions. The influence of various buffering systems composition on the working stability of the so modified electrodes was also investigated. Redox films were further modified by immobilizing glucose oxidase as a model enzyme. A remarkable electrocatalytic effect of the intercalated FeCp(2) towards the reduced form of the enzyme cofactor (FAD-H(2)) was observed. Under optimized conditions, glucose biosensor was mounted into a flow injection analysis manifold and found to yield a linear response up to 10 mM glucose. (C) 2005 Elsevier B.V. All rights reserved.
Περιγραφή
Λέξεις-κλειδιά
vanadium pentoxide xerogel, ferrocene, intercalation, amperometric glucose amperometric biosensor, photocrosslinkable styryipyridinium, modified polyvinyl alcohol, sol-gel, glucose biosensor, enzyme, encapsulation, oxidase, electrode, xerogels, proteins, immobilization, nanocomposite
Θεματική κατηγορία
Παραπομπή
Σύνδεσμος
<Go to ISI>://000230251400024
http://ac.els-cdn.com/S138824810500130X/1-s2.0-S138824810500130X-main.pdf?_tid=1f780fb231f5f2970f8f623ef8a3c5ef&acdnat=1333037416_d49bee53d9facac7cf447d851f4da30b
http://ac.els-cdn.com/S138824810500130X/1-s2.0-S138824810500130X-main.pdf?_tid=1f780fb231f5f2970f8f623ef8a3c5ef&acdnat=1333037416_d49bee53d9facac7cf447d851f4da30b
Γλώσσα
en
Εκδίδον τμήμα/τομέας
Όνομα επιβλέποντος
Εξεταστική επιτροπή
Γενική Περιγραφή / Σχόλια
Ίδρυμα και Σχολή/Τμήμα του υποβάλλοντος
Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας