Background: There are enormous methods for modifying electrodes by Prussian blue
analogues. We present here rather a very straight forward method of modification by noval nonelectrical
deposition of PY nano thin film as a modifier ITO substrate.
Methods: PY film was deposited on ITO substrate by simply dipping it in liquid mixture solution of
Fe+3 and Fe(CN)6
-3 in water at (30C0) the resultant film was washed dried and characterized by
XRD,AFM,UV and FTIR.
Results: Prepared PY films showed remarkable properties especially electro catalytic activity towards
oxidation of AA, so the PY modified electrode was used as a sensor for AA with satisfactory
sensitivity and practical linear range.
Conclusion: A new type of a nano PY film modified ITO electrode by very versatile and direct
method by dip dry method, such PY film shows remarkable electrochemical properties and stability.
PY film as a sensor offered a linear response to AA.
Keywords: Prussian yellow (PY), Prussian blue (PB), Prussian white (PW), Cyclic voltammetry (CV), Electro-catalytic reduction,
Ascorbic acid (AA), Sensor, Layer-by-layer (LbL) and chronoamperometry CA.
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