期刊
ANALYTICA CHIMICA ACTA
卷 780, 期 -, 页码 20-27出版社
ELSEVIER
DOI: 10.1016/j.aca.2013.03.068
关键词
Nanoporous; Platinum; Electrochemical sensing; Ethanol; Hydrogen peroxide; Glucose
资金
- National Science Foundation of China [51001053, 21271085]
- Shandong Province [ZR2010EQ039]
Nanoporous platinum-cobalt (NP-PtCo) alloy with hierarchical nanostructure is straightforwardly fabricated by dealloying PtCoAl alloy in a mild alkaline solution. Selectively etching Al resulted in a hierarchical three-dimensional network nanostructure with a narrow size distribution at 3 nm. The as-prepared NP-PtCo alloy shows superior performance toward ethanol and hydrogen peroxide (H2O2) with highly sensitive response due to its unique electrocatalytic activity. In addition, NP-PtCo also exhibits excellent amperometric durability and long-term stability for H2O2 as well as a good anti-interference toward ascorbic acid, uric acid, and dopamine. The hierarchical nanoporoas architecture in PtCo alloy is also highly active for glucose sensing electrooxidation and sensing in a wide linear range. The NP-PtCo alloy holds great application potential for electrochemical sensing with simple preparation, unique catalytic activity, and high structure stability. (C) 2013 Elsevier B.V. All rights reserved.
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