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Issue 63, 2016
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Effect of Ce doping into ZnO nanostructures to enhance the phenolic sensor performance

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Abstract

Various Ce-doped ZnO nanostructures (Ce/ZnO NSs) were prepared by a facile wet chemical method using reducing agents in alkaline medium. The Ce/ZnO NSs were characterized by UV/vis, FT-IR, field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (XEDS), X-ray photoelectron spectroscopy (XPS), and X-ray powder diffraction (XRD). The Ce/ZnO NSs were deposited onto flat glassy carbon electrode (GCE) with conducting Nafion binders to produce a sensor that has a fast response towards selective 3-methoxyphenol (3MP). Characteristics including higher sensitivity, lower detection limit, better reliability, good reproducibility, ease of integration, long-term stability, high selectivity, and enhanced electrochemical performance were investigated in detail at room conditions. The calibration plot is linear (r2 = 0.9879) over a large concentration range (0.9 nM to 0.9 mM). The sensitivity and detection limit was calculated as ∼94.937 μA cm−2 μM−1 and 11.5 ± 0.2 pM (at a signal-to-noise-ratio [SNR] of 3), respectively. Finally, the efficiency of the proposed chemisensor can be applied and effectively utilized for the detection of various toxic chemical compounds in the environment with acceptable and reasonable results.

Graphical abstract: Effect of Ce doping into ZnO nanostructures to enhance the phenolic sensor performance

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Publication details

The article was received on 27 Apr 2016, accepted on 06 Jun 2016 and first published on 06 Jun 2016


Article type: Paper
DOI: 10.1039/C6RA10863F
RSC Adv., 2016,6, 58236-58246

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    Effect of Ce doping into ZnO nanostructures to enhance the phenolic sensor performance

    H. B. Balkhoyor, M. M. Rahman and A. M. Asiri, RSC Adv., 2016, 6, 58236
    DOI: 10.1039/C6RA10863F

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