Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 182, Issue -, Pages 408-415Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2013.03.035
Keywords
Nanoporous; Platinum; Dealloying; Ethanol; Hydrogen peroxide; Sensing
Funding
- National Science Foundation of China [51001053, 21271085]
- Shandong Province [ZR2010EQ039]
- China Postdoctoral Science Foundation [201104617]
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Nanoporous (NP) PtNi alloy is easily fabricated through one step mild dealloying from PtNiAl source alloy. Characterized by three-dimensional nanosponge architecture with the typical dimension size as small as 3 nm, the as-made NP-PtNi alloy exhibits superior sensing performance with superior sensitivity and low detection limit toward ethanol and H2O2 as compared with state-of-the-art Pt/C catalyst due to its unique electrocatalytic activities. In particular, long-term sensing tests demonstrated that NP-PtNi alloy has distinct sensing durability with almost no activity loss upon continuous H2O2 detection for two weeks. Along with these attractive features, the as-made NP-PtNi alloy also behaves a good anti-interference toward glucose, ethanol, ascorbic acid, uric acid, and dopamine during H2O2 detection. NP-PtNi alloy shows great potential for electrochemical sensing applications. (C) 2013 Elsevier B.V. All rights reserved.
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