Sensors 2014, 14(3), 5415-5425; doi:10.3390/s140305415
Article

Synthesis of Three Dimensional Nickel Cobalt Oxide Nanoneedles on Nickel Foam, Their Characterization and Glucose Sensing Application

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Received: 25 December 2013; in revised form: 3 March 2014 / Accepted: 14 March 2014 / Published: 18 March 2014
(This article belongs to the Section Physical Sensors)
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Abstract: In the present work, NiCo2O4 nanostructures are fabricated in three dimensions (3D) on nickel foam by the hydrothermal method. The nanomaterial was characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The nanostructures exhibit nanoneedle-like morphology grown in 3D with good crystalline quality. The nanomaterial is composed of nickel, cobalt and oxygen atoms. By using the favorable porosity of the nanomaterial and the substrate itself, a sensitive glucose sensor is proposed by immobilizing glucose oxidase. The presented glucose sensor has shown linear response over a wide range of glucose concentrations from 0.005 mM to 15 mM with a sensitivity of 91.34 mV/decade and a fast response time of less than 10 s. The NiCo2O4 nanostructures-based glucose sensor has shown excellent reproducibility, repeatability and stability. The sensor showed negligible response to the normal concentrations of common interferents with glucose sensing, including uric acid, dopamine and ascorbic acid. All these favorable advantages of the fabricated glucose sensor suggest that it may have high potential for the determination of glucose in biological samples, food and other related areas.
Keywords: nickel cobalt oxide nanostructures; nickel foam; glucose sensor; potentiometric method
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Hussain, M.; Ibupoto, Z.H.; Abbasi, M.A.; Liu, X.; Nur, O.; Willander, M. Synthesis of Three Dimensional Nickel Cobalt Oxide Nanoneedles on Nickel Foam, Their Characterization and Glucose Sensing Application. Sensors 2014, 14, 5415-5425.

AMA Style

Hussain M, Ibupoto ZH, Abbasi MA, Liu X, Nur O, Willander M. Synthesis of Three Dimensional Nickel Cobalt Oxide Nanoneedles on Nickel Foam, Their Characterization and Glucose Sensing Application. Sensors. 2014; 14(3):5415-5425.

Chicago/Turabian Style

Hussain, Mushtaque; Ibupoto, Zafar H.; Abbasi, Mazhar A.; Liu, Xianjie; Nur, Omer; Willander, Magnus. 2014. "Synthesis of Three Dimensional Nickel Cobalt Oxide Nanoneedles on Nickel Foam, Their Characterization and Glucose Sensing Application." Sensors 14, no. 3: 5415-5425.


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