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- W2034320282 abstract "Abstract Non-enzymatic electrochemical sensors for the detection of glucose and hydrogen peroxide (H 2 O 2 ) were designed based on novel nanostructure electrocatalyst of carbon quantum dots (CQDs)/octahedral cuprous oxide (Cu 2 O) nanocomposites. The CQDs/octahedral Cu 2 O nanocomposites has been smoothly by a facile method with ultrasonic treatment and the morphologies of the synthesized materials were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM) with Energy dispersive X-ray spectroscopy (EDS) and powder X-ray diffraction measurements (XRD). Compared to octahedral Cu 2 O, the CQDs/octahedral Cu 2 O exhibited preferable electrocatalysis to the glucose oxidation and H 2 O 2 reduction. Amperometric sensing of glucose was realized with a linear response range from 0.02 to 4.3 mM, a detection limit of 8.4 μM ( S / N = 3). The interferents of ascorbic acid (AA), uric acid (UA), dopamine (DA) and sodium chloride (NaCl) was also detected using the CQDs/octahedral Cu 2 O modified electrode, the results showed good selectivity for glucose detection. Besides, the nonenzymatic sensor also has good performance to the electrocatalytic reduction of H 2 O 2 , with a linear response range from 5 μM to 5.3 mM and a detection limit of 2.8 μM ( S / N = 3). The CQDs/octahedral Cu 2 O nanocomposites have good selectivity for the H 2 O 2 detection with the AA, NaCl and UA." @default.
- W2034320282 created "2016-06-24" @default.
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- W2034320282 date "2015-01-01" @default.
- W2034320282 modified "2023-10-03" @default.
- W2034320282 title "Carbon quantum dots/octahedral Cu2O nanocomposites for non-enzymatic glucose and hydrogen peroxide amperometric sensor" @default.
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- W2034320282 doi "https://doi.org/10.1016/j.snb.2014.09.016" @default.
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