Abstract
AbstractIn this study, simultaneous deposition of copper oxide and electro‐reduced graphene quantum dots (ErGQDs) on the surface of carbon ceramic electrode (CCE) was reported. The prepared ErGQDs‐CuO/CCE was carefully characterized with Fourier transform infrared spectroscopy, X‐ray diffraction, fluorescence spectroscopy, scanning electron microscopy and electrochemical techniques in details. According to scan rate studies in hexacyanoferrate, a remarkable increase in the surface coverage in the presence of ErGQDs was achieved. According to square wave voltammetry results, limit of detection, linear range and sensitivity of the developed biosensor for the simultaneous measurement of Adenine (A) and Guanine (G) were obtained to be 0.041 and 0.111 μM, 0.1–13 μM and 0.25–23 μM, and 4.261 and 1.311 μA μM cm−2 respectively.
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