Facile growth of Cu2O hollow cubes on reduced graphene oxide with remarkable electrocatalytic performance for non-enzymatic glucose detection

作者：Wang, Yuqin; Ji, Zhenyuan^*; Shen, Xiaoping^*; Zhu, Guoxing; Wang, Jiheng; Yue, Xiaoyang

来源：New Journal of Chemistry, 2017, 41(17): 9223-9229.

DOI：10.1039/c7nj01952a

• GLASSY-CARBON ELECTRODE
• TIO2 NANOTUBE ARRAYS
• ELECTROCHEMICAL SENSORS
• RAMAN-SPECTROSCOPY
• HYDROGEN-PEROXIDE
• CUPROUS-OXIDE
• OXIDATION
• NANOSTRUCTURES
• NANOCOMPOSITES
• COMPOSITES

In this work, cuprous oxide (Cu2O) hollow cubes were synthesized on reduced graphene oxide (RGO) nanosheets by a facile one-pot refluxing approach. The as-prepared Cu2O/RGO nanocomposites were characterized by X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy, and transmission electron microscopy. It was revealed that Cu2O with a well-defined hollow cubic morphology is homogeneously dispersed on the surface of RGO nanosheets. The electrocatalytic properties of Cu2O/RGO nanocomposites for glucose oxidation were investigated by cyclic voltammetry and chronoamperometry. It was found that the constructed glucose sensor has a wide linear range of 0.01-9.0 mM (R-2 = 0.996) with a high sensitivity of 813.713 mu A cm(-2) mM(-1) and a low detection limit of 0.44 mu M based on signal/noise = 3. Compared to bare Cu2O and previously reported Cu2O-based glucose sensors, the as-prepared Cu2O/RGO nanocomposite glucose sensor showed remarkably enhanced electrocatalytic activity. In addition, the electrode also exhibited an excellent anti-interference ability. The excellent electrocatalytic performance together with simple and low-cost preparation makes Cu2O/RGO nanocomposites attractive for glucose sensor application.

• 出版日期2017-9-7
• 单位江苏科技大学; 江苏大学