Preprint Article Version 1 This version is not peer-reviewed

Cuprous Oxide Thin Film Non-Enzymatic Glucose Sensor Using Differential Pulse Voltammetry (DPV) and Other Voltammetry Methods and Comparing to Different Thin Film Electrodes on the Detection of Glucose in an Alkaline Solution

Version 1 : Received: 10 November 2017 / Approved: 13 November 2017 / Online: 13 November 2017 (03:15:30 CET)

How to cite: Dai, Y.; Molazemhosseini, A.; Abbasi, K.; Liu, C.C. Cuprous Oxide Thin Film Non-Enzymatic Glucose Sensor Using Differential Pulse Voltammetry (DPV) and Other Voltammetry Methods and Comparing to Different Thin Film Electrodes on the Detection of Glucose in an Alkaline Solution. Preprints 2017, 2017110074 (doi: 10.20944/preprints201711.0074.v1). Dai, Y.; Molazemhosseini, A.; Abbasi, K.; Liu, C.C. Cuprous Oxide Thin Film Non-Enzymatic Glucose Sensor Using Differential Pulse Voltammetry (DPV) and Other Voltammetry Methods and Comparing to Different Thin Film Electrodes on the Detection of Glucose in an Alkaline Solution. Preprints 2017, 2017110074 (doi: 10.20944/preprints201711.0074.v1).

Abstract

A cuprous oxide (Cu2O) thin layer served as the base for a non-enzymatic glucose sensor in an alkaline medium, 0.1 NaOH solution, with a linear range of 50-200 mg/dL using differential pulse voltammetry (DPV) measurement. An X-ray photoelectron spectroscopy (XPS) study confirmed the formation of the cuprous oxide layer on the thin gold film sensor prototype. Quantitative detection of glucose in both phosphate-buffered saline (PBS) and undiluted human serum were carried out. Neither ascorbic acid nor uric acid even at a relatively high concentration level of 100mg/dL in serum interfered with the glucose detection, demonstrating the excellent selectivity of this non-enzymatic cuprous oxide thin layer based glucose sensor. Chronoamperometry (CA) and single potential amperometric voltammetry were used to verify the measurements obtained by differential pulse voltammetry (DPV), and the positive results validated that the detection of glucose in a 0.1 M NaOH alkaline medium by DPV measurement was effective. Nickel, platinum and copper are commonly used metals for non-enzymatic glucose detection. The performance of these metal-based sensors for glucose detection using DPV were also evaluated. Cuprous oxide (Cu2O) thin layer based sensor showed the best sensitivity for glucose detection among the sensors evaluated.

Subject Areas

cuprous oxide; non-enzymatic glucose sensor; alkaline solution; differential pulse voltammetry

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