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Electrochemical Detection of Low Concentration Chloropropanol Using Silver Nanowire Array Electrodes in Aqueous Media

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Abstract:

In this paper, we report a facile method to fabricate silver nanowire array electrodes (SNAE) with ultra-high detection sensitivity to chloropropanol in the aqueous solution. Silver nanowire arrays were assembled in conventional anodic alumina membranes (AAM) by electrochemical deposition. Subsequently, silver nanowire arrays with an aspect ratio of 5∼6 were deposited on the bottom of AAM. After a complete removal of the AAM, the grown arrays were used as working electrodes in a three-electrode cell. The electrochemical activity of SNAE was tested in the 0.1 mol/L NaClO4 aqueous solution using chloropropanol as analyte by a cyclic voltammetry method. The results show that SNAE display a distinct reduction peak at −1.011 V (vs. SCE) for chloropropanol and the linear dependencies of current on chloropropanol concentration were obtained within the concentration range 1.8 × 10−7∼2 × 10−6 mol/L. The detection limit of chloropropanol was 10−9 mol/L, which is significantly lower than that of their bulk counterparts. In short, SNAE show great potential in the determination of trace chloropropanol.

Keywords: CHLOROPROPANOL; CYCLIC VOLTAMMETRY; SILVER NANOWIRE ARRAY ELECTRODE

Document Type: Research Article

DOI: https://doi.org/10.1166/jnn.2011.3540

Publication date: 2011-03-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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