期刊
NANOMATERIALS
卷 8, 期 6, 页码 -出版社
MDPI
DOI: 10.3390/nano8060429
关键词
metal-organic framework; copper nanoparticles; nitrogen doped graphite oxide; amperometric techniques; glucose; human serum samples
类别
资金
- Ministry of Science and Technology, Taiwan [MOST106-2113-M-033-001]
- Chung Yuan Christian University
- National Taipei University of Technology, Taiwan
Copper nanoparticles with the diameter of 50 +/- 20 nm decorated nitrogen doped graphite oxide (NGO) have been prepared through a simple single step carbonization method using copper metal-organic framework (MOF), [Cu-2(BDC)(2)(DABCO)] (where BDC is 1,4-benzenedicarboxylate, and DABCO is 1,4-Diazabicyclo[2.2.2]octane) as precursor. The surface morphology, porosity, surface area and elemental composition of CuNPs/NGO were characterized by various techniques. The as-synthesized CuNPs/NGO nanomaterials were coated on commercially available disposable screen-printed carbon electrode for the sensitive determination of glucose. We find that the modified electrode can detect glucose between 1 mu M and 1803 mu M (linear range) with good sensitivity (2500 mu A mM(-1) cm(-2)). Our glucose sensor also possesses low limits of detection (0.44 mu M) towards glucose determination. The highly selective nature of the fabricated electrode was clearly visible from the selectivity studies. The practicability of CuNPs/NGO modified electrode has been validated in the human serum samples. The storage stability along with better repeatability and reproducibility results additionally substantiate the superior electrocatalytic activity of our constructed sensor towards glucose.
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