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Electrodeposition of Poly(sodium 4-Styrenesulfonate)-Silver Nanocomposites for Electrochemical Detection of H 2 O 2

International Journal of Electrochemical Science, ISSN: 1452-3981, Vol: 11, Issue: 9, Page: 7705-7713
2016
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Article Description

A polystyrene sulphonic acid-silver nanocomposite (PSS-Ag NPs) using AgNO 3 -PSS solution as precursor was successfully deposited on the glassy carbon electrode (GCE) via electrodeposition. The prepared PSS-Ag NPs/GCE was then applied as active electrode material of non-enzymatic electrochemical sensors for H 2 O 2 detection. The performance of PSS-Ag NPs/GCE for electrocatalytic reduction of H 2 O 2 was better than that of Ag NPS/GCE and PSS/GCE electrode. The linear response ranging of the sensor with PSS-Ag NPs modified electrode was from 1.5 μM to 2.0 mM. And the detection limit was 0.7 μM ( S / N = 3). Owing to the outstanding electrocatalytic activity and rapidly electron transport property of PSS-Ag NPs composite, the non-enzymatic H 2 O 2 sensor constructed with PSS-Ag NPs/GCE was highly stable and sensitive.

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