期刊
ANALYTICAL METHODS
卷 11, 期 39, 页码 4998-5006出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ay01544b
关键词
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资金
- National Natural Science Foundation of China [51377047]
- Natural Science Foundation of Jiangsu Higher Education Institutions of China [16KJB480004]
- Science and Technology Plan of Lianyungang [SH1607]
- 333 Engineering Program of Jiangsu [BRA 2018285]
- 521 Engineering Program of Lianyungang
- Advanced Training Grant for Professional Leaders of Higher Vocational Colleges of Jiangsu [2019GRGDYX086]
Flower-like metallic nanocrystals are generally used for applications in analytical science, but so far there have been few reports of 'nanoflowers' made of protein components. Herein, we report a novel electrochemical sensor based on copper ions-crosslinked bovine serum albumin nanoflower networks (Cu/CBSA NFNs). Due to the positive synergistic effects between the protein and copper ions, the new modified GCE delivers enhanced catalytic activity toward the electro-oxidation of nitrite ions. Through differential pulse voltammetry (DPV) the fabricated sensor is found to exhibit good analytical performance. Features include a wide dynamic linear range (0.5 to 500 mu M, R-2 = 0.999), a highly reproducible response (R.S.D. of 2.47%), and a low detection limit (0.1 mu M, S/N = 3). Furthermore, the versatility of the proposed GCE can be demonstrated by the distinguished selectivity in the presence of some interfering agents and the electrode can also be utilized to determine nitrite in mineral water samples.
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