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Electrodeposition method synthesise gold nanoparticles-Prussian blue-graphene nanocomposite and its application in electrochemical sensor for H2O2

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4 Author(s)
Xiaojun Zhang ; Coll. of Chem. & Mater. Sci., Anhui Normal Univ., Wuhu, China ; Jun Zhang ; Dongdong Zhou ; Guangfeng Wang

Gold nanoparticles-Prussian blue-graphene (GNPs-PB-Gr) nanocomposites were successfully synthesised by a simple one-step electrodeposition method. Using those GNPs-PB-Gr nanocomposites, a simple H2O2 amperometric sensor has been fabricated (GNPs-PB-Gr/glassy carbon electrode (GCE)) and evaluated by electrochemical impedance spectroscopy, cyclic voltammetry and typical amperometric method. When applied to detect H2O2 by amperometric method, GNPs-PB-Gr/GCE produced an ultrahigh sensitivity of 33.86--A/mM with a low detection limit of 1.5--M (signal-to-noise ratio (SNR)-3). What is more, interference from common co-existing species, such as uric acid and ascorbic acid, can be avoided at the sensor. The results obtained in this Letter imply that GNPs-PB-Gr nanocomposites are promising nanomaterials for the determination of H2O2.

Published in:

Micro & Nano Letters, IET  (Volume:7 ,  Issue: 1 )