Hierarchically porous CuO spindle-like nanosheets grown on a carbon cloth for sensitive non-enzymatic glucose sensoring

Abstract

Herein, porous CuO spindle-like nanosheets were fabricated on a carbon cloth using a facile hydrothermal method, and surface morphology, microstructure, and glucose sensing performance were studied. The porous spindle-like nanosheets are constructed by nanoparticles and slit-like pores, exhibiting a hierarchical structure. When used for non-enzymatic glucose sensoring, the obtained CuO nanosheet electrode exhibits a wide linear range from 0.05 to 3.30 mM, a high sensitivity of 785.2 µA mM −1 cm −2 and a low detection limit of 0.22 µM (S/N = 3). Besides, good selectivity, stability, and reproducibility for glucose detection indicate a promising application of CuO nanosheet electrodes as non-enzymatic glucose sensors.

Non-Enzymatic Amperometric Glucose Screen-Printed Sensors Based on Copper and Copper Oxide Particles

“…These results are in good agreement with previously reported results in the literature [21]. Sun et al, performed an electrode composed of CuO spindle-like nanosheets grown on a carbon cloth [22].…”

“…These results are in good agreement with previously reported results in the literature [21]. Sun et al, performed an electrode composed of CuO spindle-like nanosheets grown on a carbon cloth [22]. The electroactive area of the electrode was estimated from cyclic voltammetry performed at different scan rates.…”

Fabrication of Porous Reduced Graphene Oxide Encapsulated Cu(OH)2 Core–shell Structured Carbon Fiber-Based Electrodes for High-Performance Flexible Supercapacitors

“…45 The XPS Cu 2p spectra of Cu(OH) 2 /Cu@CF and PrGO/Cu(OH) 2 /Cu@CF both have two typical peaks at 943.1 and 953.9 eV, corresponding to the spin−orbit couple of Cu 2p 3/2 and Cu 2p 1/2 , respectively. 47 The above characteristic peaks of copper have decreased a little in Figure 4f, which is ascribed to the encapsulation of PrGO. These results clearly confirm the successful synthesis of the PrGO/Cu(OH) 2 /Cu@ CF hierarchical electrode.…”

“…Due to the adhesion of PrGO, the intensities of C–O, CO, and O–CO have changed a lot, further indicating the wrapping of the PrGO layer . The XPS Cu 2p spectra of Cu­(OH) 2 /Cu@CF and PrGO/Cu­(OH) 2 /Cu@CF both have two typical peaks at 943.1 and 953.9 eV, corresponding to the spin–orbit couple of Cu 2p 3/2 and Cu 2p 1/2 , respectively . The above characteristic peaks of copper have decreased a little in Figure f, which is ascribed to the encapsulation of PrGO.…”

Facile synthesis of Cu/Co-ZIF nanoarrays for non-enzymatic glucose detection

“…Among them, electrochemical sensing techniques show low cost, rapid response and low detection limit [5]. The non-enzymatic electrochemical sensors constructed by noble metals [6][7][8], transition metal materials [9][10][11][12][13][14][15][16] and their hybrid with carbon materials [17][18][19][20][21][22] exhibit good catalytic property and stability.…”