期刊
APPLIED SURFACE SCIENCE
卷 494, 期 -, 页码 484-491出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2019.07.197
关键词
CuO microtubes; Non-enzymatic glucose sensor; Self-templating synthesis; Kirkendall effect
类别
资金
- Graduate Scientific Research and Innovation Foundation of Chongqing, China, China [CYS18002]
- Fundamental Research Funds for the Central Universities, China [106112017CDJXSYY0001]
- sharing fund of Chongqing University's large-scale equipment [201612150011]
Reliable and accurate detection of blood glucose level is extremely important to monitor and prevent diabetic complications. Transition metal oxides, especially copper oxide (CuO), hold great potential for glucose sensor due to their good electrochemical activity and controllable structure. Herein, we fabricated a facile non-enzymatic sensor using CuO microtubes (MTs) as electrocatalytic active materials for electrochemical detection of glucose. The CuO MTs were hydrothermally prepared via the Kirkendall effect of KCu7S4 microwires. The obtained CuO shows unique tubular structure with abundant nanosheets on the surface and exhibits good crystallinity. The developed CuO based sensor exhibits a wide linear range up to 5.664 mM, with a satisfactory sensitivity of 992.073 mu Acm(-2) mM(-1) and a short response time within 2 s. The detection limit for glucose is as low as 307 nM. In addition, the sensor also displays superior anti-interference performance, excellent reproducibility and long-term stability owing to its special tubular structure. All these excellent results show that the prepared CuO MTs can be a promising electrode material for glucose sensing.
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