期刊
ELECTROCHIMICA ACTA
卷 248, 期 -, 页码 281-291出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2017.07.142
关键词
Sandpaper; Electroless plating; Non-enzymatic; Glucose; Electrochemical sensors
资金
- National Natural Science Foundation of China [61371019]
- Shanghai Civil-military Integration Project [140217]
- Shanghai Technical Trade Solutions Project [16TBT011]
- Shanghai Materials Genome Institute (6th) Foundation from Shanghai Municipal Science and Technology Commission [16DZ2260606]
A simple and cost-effective sandpaper-supported copper framework (SSCF) was innovatively constructed by a novel scribing-seeding-plating approach and its application to non-enzymatic glucose determination was systematically investigated. The morphology, composition, crystalline structure of copper nanocoatings and sandpaper substrate were detailedly characterized with SEM, XPS, EDX and XRD, respectively. Processing parameters were optimized by central composite design to obtain an optimal conductivity of 4.69 x 107 S.m (1) for copper nanocoatings. The SSCF exhibits excellent performance, with a wide linear range from 1.0 mM to 4.6 mM, a high sensitivity of 2165.5 mu A mM (1) cm (2), a low determination limit of 30 nM (S/N = 3), favorable selectivity and stability. The good electrocatalytic capacity could be attributed to the coordination between high-aspect-ratio porous microstructures of large surface area and copper nanocoatings of excellent catalytic ability. Finally, low relative standard deviations (1.59%-2.76%, n = 10) and good recoveries (101.13%-102.69%) for enzymeless glucose determination in human serum samples and commercial drinks strongly validated satisfactory serviceability of SSCFs in medical diagnostics and food manufacturing. (C) 2017 Elsevier Ltd. All rights reserved.
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