Synthesis of mesoporous CuO microspheres with core-in-hollow-shell structure and its application for non-enzymatic sensing of glucose

Abstract

Mesoporous CuO microspheres with core-inhollow-shell structure were synthesized by one-pot hydrothermal method, using dicyandiamide as hydrolysis agent and poly(vinylpyrrolidone) as soft template. The assynthesized CuO microspheres were characterized by powder X-ray diffraction, field-emission scanning electron microscopy and N 2 sorption measurements. The core-inhollow-shelled CuO microspheres exhibit greatly enhanced amperometric response towards glucose as compared to that of the simple hollow counterpart. The as-developed non-enzymatic glucose sensor exhibited favorable performance with wide linear range (0.005-7.95 mM), sensitivity of 622.2 lA mM cm -2 and low detection limit of 1 lM.

Room-temperature synthesis of mesoporous CuO and its catalytic activity for cyclohexene oxidation

“…However, the reports on the fabrication of mesoporous CuO nanostructure are very limited and the reported methods suffer from either utilizing templating agent [25][26][27][28] or high temperatures. [29][30][31][32][33][34][35] To explore the facile synthesis of mesoporous CuO nanocrystals at room temperature is of great importance, but still remains challenging. Amines are organic compounds containing a basic N atom with a lone pair of electrons which are closely related to ammonia.…”

Novel cupric acetate self‐induced, stabilized cupric oxide mesoporous nanosheets via a reflux‐hydrothermal method

“…CuO‐MNS also present the BET surface area of 34.7 m 2 /g and pore volume of 0.26 cm 3 /g. CuO‐MNS have higher BET surface area than some surfactant‐assisted mesoporous CuO, eg, 10.03 m 2 /g of nanosheets, 31.1 m 2 /g of nanoribbons, and 13.1 m 2 /g of microspheres …”

“…Various structures of mesoporous CuO have been synthesized, such as nanotubes, nanosheets, nanoribbons, microspindles, and microspheres . The corresponding synthetic methods include soft template method (e.g., l ‐aspartic acid, SDBS, TOAB, PVP, P123), hard template method, complex method, thermal decomposition method, sonochemical method, etc. The synthesis of mesoporous CuO often faces some problems, such as high‐cost, high‐energy consumption and the use of toxic reagent.…”

Three-Dimensional Porous NiO Nanosheets Vertically Grown on Graphite Disks for Enhanced Performance Non-enzymatic Glucose Sensor

“…S1a). The semicircle at high frequency region corresponds to the electron transfer limited process at the electrode interface and its diameter is equal to the electrontransfer resistance (Rct) [47,48]. The calculated charge transfer resistances (Rct) are 85, 144 V for the s-NiO/GD and f-NiO-GD electrodes, respectively.…”