期刊
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
卷 118, 期 3, 页码 989-996出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s00339-014-8855-8
关键词
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资金
- National Natural Science Foundation of China [91333203]
- Natural Science Foundation of Zhejiang province [LY14E020006]
- Doctorate Fund of the Ministry of Education [2011010110013]
In this work, ZnO-CuO composite porous spheres with core-shell structure were successfully synthesized through a controllable simple top-down route to take advantage of the excellent features of ZnO and CuO. The crystal structure and morphology of the as-prepared products were characterized, and a possible growth mechanism was proposed. The obtained sample with a core surrounded by a porous shell has a large surface area. As CuO can well catalyze glucose in alkaline solution, together with the good electron transfer property of ZnO and the hetero-junction formed between them, non-enzymatic glucose sensors based on ZnO-CuO composite porous spheres show good performance with a wide linear range of 0.02-4.86 mM, a high sensitivity of 1,217.4 mu A cm(-2) mM(-1), and a low detection limit of 1.677 mu M, indicating a good detection behavior of glucose.
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