Nanoporous PtAu alloy as an electrochemical sensor for glucose and hydrogen peroxide

Nanoporous (NP) PtAu alloy is easily fabricated by a simple and general dealloying method. Characterized by three-dimensional nanospongy architecture with a typical dimension around 5nm, the as-prepared NP-PtAu alloy shows superior sensing performance towards glucose and hydrogen peroxide (H2O2) wit...

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Bibliographic Details
Published in:Sensors and actuators. B, Chemical Vol. 191; pp. 612 - 618
Main Authors: Wang, Jinping, Gao, Hua, Sun, Fenglei, Xu, Caixia
Format: Journal Article
Language:English
Published: Elsevier B.V 01.02.2014
Subjects:
Dealloying
Detection
Durability
Electrodes
Glucose
Hydrogen peroxide
Nanoporous
Nanostructure
Platinum
Sensor
Sensors
Uric acid
Hydrogen peroxide
Glucose
Platinum
Nanoporous
Dealloying
Sensor
ISSN:0925-4005, 1873-3077
Online Access:Get full text
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Summary:Nanoporous (NP) PtAu alloy is easily fabricated by a simple and general dealloying method. Characterized by three-dimensional nanospongy architecture with a typical dimension around 5nm, the as-prepared NP-PtAu alloy shows superior sensing performance towards glucose and hydrogen peroxide (H2O2) with highly sensitive response compared with commercial Pt/C and NP-Pt catalysts. Importantly, NP-PtAu exhibits excellent amperometric durability and long-term stability for H2O2 and glucose. After coating additional nafion on the working electrode, NP-PtAu shows a good anti-interference towards ascorbic acid, uric acid, and dopamine during glucose detection. NP-PtAu alloy holds great application potential for electrochemical sensing with simple preparation, high catalytic activity, and high structure stability.
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ISSN:0925-4005
1873-3077
DOI:10.1016/j.snb.2013.10.034