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

Panagiotopoulos Apostolos | Zendy; Gkouma Anthi | Zendy; Vassi Andriana | Zendy; Johnson Christopher J. | Zendy; Cass Anthony E. G. | Zendy; Topoglidis Emmanuel | Zendy

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

Author(s) -

Panagiotopoulos Apostolos,

Gkouma Anthi,

Vassi Andriana,

Johnson Christopher J.,

Cass Anthony E. G.,

Topoglidis Emmanuel

Publication year - 2018

Publication title -

electroanalysis

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.574

H-Index - 128

eISSN - 1521-4109

pISSN - 1040-0397

DOI - 10.1002/elan.201800188

Subject(s) - hemin , electrochemistry , electrode , substrate (aquarium) , hydrothermal circulation , materials science , chemical engineering , analytical chemistry (journal) , nuclear chemistry , chemistry , chromatography , heme , organic chemistry , oceanography , engineering , enzyme , geology

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.

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