Synthesis of CuO Nanrods Using Chemical Bath Deposition for a Nonenzymatic Glucose Biosensor
DOI:
https://doi.org/10.23851/mjs.v34i1.1228Keywords:
Copper oxide,, CBD method,, I-V characteristics,, Non-enzymatic glucose biosensorAbstract
In the present research, CuO NRs are produced on Indium Tin Oxide (ITO) using (CBD) growth process, and their electrochemical characteristics for glucose biosensors are studied. A field emission scanning electron microscope, x-ray diffractometer, energy dispersive x-ray, and UV-VIS spectroscopy were used to examine the morphology and crystallinity of a CuO film. The synthesized CuO film displays a monoclinic phase with average crystallite sizes of around (18–25) nm. CuO is composed of NRs aggregating together to construct flower and flower bud-like shape structures with a diameter between (20-80) nm and a thickness of the CuO film is about (158.5-285.7) nm. The energy gap of CuO NRs was 2.55 eV. The I-V characteristics of the biosensors were measured and evaluated at various glucose concentrations to determine their sensitivity. The electrocatalytic performance of the CuO for the detection of glucose was outstanding. With a very low limit of detection (LOD) of 0.45 μM and a sensitivity of 799 µA cm-2 Mm-1, the electrode attained a wide linear range from 0.5 to 2 mM. This result highlights the sensor's tremendous potential as a high-performance non-enzymatic glucose sensor that makes use of an original, cost-effective, and straightforward sensor design.
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