Journal
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
Volume 431, Issue -, Pages 60-65Publisher
ELSEVIER
DOI: 10.1016/j.colsurfa.2013.04.019
Keywords
Octahedral Cu nanocages; Ni-induced mechanism; Non-enzymatic sensor
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Funding
- Hunan Provincial Natural Science Foundation of China [11JJ5006]
- Fundamental Research Funds for the Central Universities
- National Natural Science Foundation of China [J1210040]
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Designed octahedral Cu nanocages were successfully prepared at room temperature by introducing Ni induced electroless strategy. This strategy balanced the inhibitory effect of sodium oleate (SOA) in the room temperature reduction process. Reduction rate was markedly improved as Ni2+ increasing. The Ni-induced electroless Cu deposition mechanism was studied. The first deposited metallic Ni particles catalyzed the oxidation of hydrazine (N2H4 center dot H2O) to give electrons. Cu2O intermediates captured the electrons and were reduced to Cu nanocages with SOA existence. Thermo-gravimetric and differential thermal analysis (TG-DTA) results illuminated that the Ni-induced Cu nanocages had higher oxidation resistance property in air atmosphere compared to Cu nanocages prepared without Ni inclusion. A well-defined, stable and fast amperometric response of glucose was observed when the Ni-induced Cu nanocages were constructed as non-enzymatic glucose sensor. (C) 2013 Elsevier B.V. All rights reserved.
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