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| Pd-based nanoporous metals for enzyme-free electrochemical glucose sensors |
| Chun-Lei Yanga, Xu-Hai Zhanga, Guo Lana, Lu-Yang Chenb, Ming-Wei Chenb, Yu-Qiao Zenga, Jian-Qing Jianga |
a Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing 211189, China;
b Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan |
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Abstract Nanoporous metals (NPMs) show potential applications as enzyme-free glucose sensors. There are few reports on nanoporous Pd in this area even though their cost is much lower than other NPMs. In this work, we report the formation of Pd-based NPM with improved catalytic activity towards the oxidation of glucose. By dealloying metallic glasses, Pd-based NPMs with bi-continuous networks were obtained. All the Pd-based NPMs show high electrochemical catalytic activity towards glucose oxidation. In this study, NPM with an open, three-dimensional, ligament-channel nanoporous structure resulted by dealloying metallic Pd30Cu40Ni10P20, producing a pore size of 11 nm and a ligament size of 7 nm as the best configuration towards the direct oxidation reaction of glucose.
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Received: 24 October 2013
Published: 23 February 2014
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| Fund: This work is supported by the National Science Foundation of China (Nos. 51001026, 21173041), the Project-sponsored by SRF for ROCS, SEM (No. 6812000013), the Project-sponsored by Nanjing for ROCS (No. 7912000011), Opening Project of Jiangsu Key Laboratory of Advanced Metallic Materials (No. AMM201101), and the Fundamental Research Funds for the Central Universities (Nos. 3212002205, 3212003102). |
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Corresponding Authors:
Yu-Qiao Zeng
E-mail: zyuqiao@seu.edu.cn
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