3D CuO nanosheet wrapped nanofilm grown on Cu foil for high-performance non-enzymatic glucose biosensor electrode

• Published in: Talanta (Oxford) 2017-11, Vol.174, p.514-520
• Main Authors: Yuan, Rui-mei, Li, He-jun, Yin, Xue-min, Lu, Jin-hua, Zhang, Lei-lei
• Format: Article
• Language: English
• Subjects: Binder-free; CuO; Glucose biosensor; Non-enzymatic
• ISSN: 0039-9140; 1873-3573
• DOI: 10.1016/j.talanta.2017.06.030

3D binder-free CuO nanosheets wrapped nanofilms has been in situ synthesized on Cu substrate by a simple and facile procedure, with an aim of fabricating high-performance glucose sensor. The complex morphology that the nanosheet grown on Cu subtract evolved into nanofilms and eventually converged to nanowires, is benefit for the mass transport and electro-catalysis. Compared the ECSA of the CuO modified electrode to that of the bare Cu electrode, the effective surface area during the electro-catalysis of the CuO/Cu electrode is much larger. The glucose sensor based on CuO products exhibited high sensitivity (4201μAcm−2mM−1), low detection limit (0.5μmol/L) and quick response time (0.7s). And the stability and selectivity is also fantastic. According to the serum sample analysis, it transpires that the CuO/Cu sensor displayed excellent recovery compared to the concentration values measured by medial method. So this material shows great potential applications in glucose sensors. [Display omitted] •The nanostructure was fabricated by a controlled procedure.•This product presents a high sensitivity (4201μAcm−2mM−1) and quick response time (0.7s) for glucose determination.•The sensor exhibits excellent selectivity and stability.•This work provides a promising approach for sensitive glucose determination.