CuO nanoleaf electrode: facile preparation and nonenzymatic sensor applications
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- 作者：Shaohuang Weng (1)
Yanjie Zheng (1)
Chengfei Zhao (1)
Jianzhang Zhou (2) (3)
Liqing Lin (1)
Zongfu Zheng (4) (5)
Xinhua Lin (1) - 关键词：Facile fabrication ; CuO nanoleaf electrode ; Nonenzymatic sensor ; H2O2 ; Glucose
- 刊名：Microchimica Acta
- 出版年：2013
- 出版时间：6 - April 2013
- 年：2013
- 卷：180
- 期：5
- 页码：371-378
- 全文大小：653KB
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Yanjie Zheng (1)
Chengfei Zhao (1)
Jianzhang Zhou (2) (3)
Liqing Lin (1)
Zongfu Zheng (4) (5)
Xinhua Lin (1)
1. Department of Pharmaceutical Analysis, Faculty of Pharmacy, Fujian Medical University, Fuzhou, 350004, China
2. State Key Laboratory of Physical Chemistry of the Solid Surface, Xiamen University, Xiamen, 361005, China
3. Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
4. The 476 Hospital of PLA, Fuzhou, 350002, China
5. Fuzong Clinical College of Fujian Medical University, Fuzhou, 350025, China - ISSN：1436-5073
文摘
We have prepared a CuO nanoleaf electrode by single-step chemical oxidation of a copper foil immersed in alkaline solution. The CuO nanoleaves obtained in this way are perpendicularly orientated towards the copper substrate and are mechanically stable. This results in a high electron transfer rate between CuO and the substrate. Scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and cyclic voltammetry were employed to characterize the morphology, growth, structure, and electrochemical properties of the CuO nanoleaf electrode. It exhibits excellent nonenzymatic response to H2O2 and glucose in 0.1?mol?·?L? NaOH solution, with a wide linear range, good reproducibility, and detection limits of 10?μmol?·?L? for H2O2, and 1?μmol?·?L? for glucose. The facile preparation, high electrocatalytic activity and response time of <5?s demonstrate the potential applications of the new sensor. Figure In this manuscript, a facile preparation method of CuO nanoleaves was developed via one-step chemical oxidation of copper foil immersion into alkaline solution for the first time. The prepared CuO illustrated interesting leaf-like morphology. The CuO nanoleaves electrode was applied to the nonenzymatic determination of H2O2 and glucose in NaOH solution. The sensitivity of CuO nanoleaves electrode towards H2O2 and glucose was high with a wide linear range and low limit of detection. Facile preparation, high electrocatalytic activity, short response time and low limit of detection, demonstrate the further potential applications of CuO nanoleaves electrode.