期刊
ACS APPLIED MATERIALS & INTERFACES
卷 10, 期 3, 页码 2360-2367出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b17005
关键词
nickel-cobalt phosphate; nanosheets; electrocatalytic activity; glucose; human serum
资金
- NSFC [21705141, 21275124, 21275125, 21575124, 21675140, 21201010, 21671170]
- Jiangsu Planned Projects for Postdoctoral Research Funds [1601075C]
- Postdoctoral Science Foundation of China [2016M601897]
- Program for New Century Excellent Talents in University [NCET-13-0645]
- PAPD
- TAPP of Jiangsu Higher Education Institutions
- Graduate Innovation Project Foundation of Jiangsu province [KYLX 1333, KYLX 1334]
- Natural Science Research Projects of Jiangsu Higher Education [16KJB150044]
- Yangzhou University Innovation and Cultivation Fund [2016CXJ014]
Two-dimensional (2D) ultrathin nickel-cobalt phosphate nanosheets were synthesized using a simple one-step hydrothermal method. The morphology and structure of nanomaterials synthesized under different Ni/Co ratios were investigated by transmission electron microscopy, scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. Moreover, the influence of nanomaterials' structure on the electrochemical performance for glucose oxidation was investigated. It is found that the thinnest nickel-cobalt phosphate nanosheets synthesized with a Ni/Co ratio of 2:5 showed the best electrocatalytic activity for glucose oxidation. Also, the ultrathin nickel cobalt phosphate nanosheet was used as an electrode material to construct a nonenzymatic electrochemical glucose sensor. The sensor showed a wide linear range (2-4470 mu M) and a low detection limit (0.4 mu M) with a high sensitivity of 302.99 mu A.mM(-1).cm(-2). Furthermore, the application of the as-prepared sensor in detection of glucose in human serum was successfully demonstrated. These superior performances prove that ultrathin 2D nickel-cobalt phosphate nanosheets are promising materials in the field of electrochemical sensing.
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