期刊
ELECTROCHIMICA ACTA
卷 248, 期 -, 页码 299-306出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2017.07.100
关键词
Porous nanostructure; Cu@Cu2O-Pd electrode; glucose oxidation; electrocatalysts; biosensors
资金
- National Natural Science Foundation of China [21203236]
- Guangdong and Shenzhen Innovative Research Team Program [2011D052, KYPT20121228160843692]
- Guangdong Provincial Key Laboratory of Materials for High Density Electronic Packaging [2014B030301014]
- Shenzhen High Density Electronic Packaging and Device Assembly Key Laboratory [ZDSYS20140509174237196]
- Shenzhen Peacock Plan [KQCX2015033117354154]
- Shenzhen basic research plan [JCYJ20150521144320990, JCYJ20160229195455154]
3D hierarchically porous Cu@Cu2O films supported Pd nanoparticles with excellent electrocatalytic activity are synthesized through electrochemical deposition, anodic oxidation and redox growth. Enzyme-free glucose biosensors based on the porous Cu@Cu2O-Pd electrodes exhibit higher sensitivity (1.157 mA cm (2)mM (1)) than those of the porous Cu@Cu2O films (0.607 mA cm (2)mM (1)), porous Cu films (0.507 mA cm (2)mM (1)) and Pd nanoparticles (0.107 mA cm (2)mM (1)). The enhanced activity of the porous Cu@Cu2O-Pd nanostructures might be attributed to the unique hierarchical porous structures with highly exposed active sites and synergetic effect from metal oxide semiconductor Cu2O and noble metal Pd. (C) 2017 Elsevier Ltd. All rights reserved.
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