Novel 3D Structure of Silver Doped ZrO2 Combined Graphene-Based Mesopouros Silica Quaternary Nanocomposite for a Nonenzymatic Glucose Sensing Effects
Abstract We described the novel nanocomposite of silver doped ZrO2 combined graphene-based mesoporous silica (ZrO2-Ag-G-SiO2, ZAGS) in bases of low-cost and self-assembly strategy. Synthesized ZAGS were characterized through X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectrometry (EDX), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), Raman spectroscopy, Nitrogen adsorption-desorption isotherms, X-ray photoelectron spectroscopy (XPS), and Diffuse Reflectance Spectroscopy (DRS). The ZAGS as a enzyme-free glucose sensor active material toward coordinate electro-oxidation of glucose was considered through cyclic voltammetry in significant organic electrolytes, such as phosphate-buffer (PBS) at pH 7.4 and commercial urine. Utilizing ZAGS, glucose detecting may well be finished with effective electrocatalytic performance toward organically important concentrations with the current reaction of 9.0 × 10-3 mAcm-2 and discovery restrain of 0.05 mmol/L at the lowest potential of +0.2 V, thus fulfilling the elemental prerequisites for glucose detecting within the urine. Likewise, ZAGS cathodes can be worked for glucose detecting within the nearness of interferometer substances (e.g., ascorbic corrosive, lactose and starch) in urine at proper pH condition. Our results highlight the potential usages for subjective and quantitative electrochemical investigation of glucose through the ZAGS sensor for glucose detecting stage permitted within the urine concentration.