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Issue 101, 2015
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Freestanding Cu nanowire arrays on Ti/Cr/Si substrate as tough nonenzymatic glucose sensors

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Abstract

Exploring a tough, reusable and reproducible nonenzymatic sensor for glucose detection is required. Cu nanowire array electrodes on a Ti/Cr/Si substrate are prepared from an anodic aluminum oxide template film covered Ti/Cr/Si substrate by an electrodeposition method. The scanning electron microscope results indicate that Cu nanowires with a diameter of 50 nm and a length of hundreds of nm freestanding on the Ti/Cr/Si substrate are obtained. Electrochemical measurements indicate the freestanding nanowire array electrodes showing sensitivity of 1067 μA mM−1 cm−2 and detection limit of 1.87 μM when using the arrays as glucose sensors. The most attractive characteristics of the electrodes are the outstanding reusability and reproducibility, realizing a 1.77% relative standard deviation (RSD) of one electrode in five time tests and a 3.33% RSD of five electrodes for one sample. The application of the electrodes on determining the glucose concentration in human serum samples indicates the array electrode is a promising candidate as a practical sensor.

Graphical abstract: Freestanding Cu nanowire arrays on Ti/Cr/Si substrate as tough nonenzymatic glucose sensors

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Publication details

The article was received on 28 May 2015, accepted on 24 Sep 2015 and first published on 24 Sep 2015


Article type: Paper
DOI: 10.1039/C5RA10058E
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Citation: RSC Adv., 2015,5, 82998-83003
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    Freestanding Cu nanowire arrays on Ti/Cr/Si substrate as tough nonenzymatic glucose sensors

    L. Zhang, J. Zhang, C. Yang, G. Zhao, J. Mu and Y. Wang, RSC Adv., 2015, 5, 82998
    DOI: 10.1039/C5RA10058E

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