Hemin Modified SnO 2 Films on ITO‐PET with Enhanced Activity for Electrochemical Sensing

We present a simple and efficient method for the preparation of hemin‐modified SnO 2 films on low cost, flexible, conducting ITO‐PET substrates to enable the development of a sensitive electrochemical sensor for the determination of H 2 O 2 . Using a hydrothermal processing method meant that the SnO...

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Bibliographic Details
Published in:Electroanalysis (New York, N.Y.) N.Y.), 2018-09, Vol.30 (9), p.1956-1964
Main Authors: Panagiotopoulos, Apostolos, Gkouma, Anthi, Vassi, Andriana, Johnson, Christopher J., Cass, Anthony E. G., Topoglidis, Emmanuel
Format: Article
Language:English
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Summary:We present a simple and efficient method for the preparation of hemin‐modified SnO 2 films on low cost, flexible, conducting ITO‐PET substrates to enable the development of a sensitive electrochemical sensor for the determination of H 2 O 2 . Using a hydrothermal processing method meant that the SnO 2 films can be prepared at low temperatures, compatible with the PET substrate. The properties of the electrodes enable a high hemin loading to be achieved in a stable and functional way, allowing the direct reduction and oxidation of the immobilized hemin and maintaining its high electrocatalytic activity in the reduction of H 2 O 2 on the surface. The results showed a sensitive response linearly proportional to the concentration of H 2 O 2 in the range 1.5 to 90 μM.
ISSN:1040-0397
1521-4109
DOI:10.1002/elan.201800188