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Optical and electrochemical sol-gel sensors for inorganic species

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Abstract

The use of sol-gels as a sensing matrix for the development of unique sensing strategies is discussed. Sol-gels offer almost limitless possibilities for sensing substrates due to the variety of physical properties that can be obtained by altering a number of discussed fabrication conditions and techniques. By careful consideration of the sensing requirements, novel detection methods have been developed for a variety of analytes and applications. Here, sol-gels have been used to monitor pH at the extreme ends of the scale ([H+] = 1–11 M and [OH−] = 1–10 M) and in mixed solvent/solute systems using dual sensing approaches. The use of ligand-grafted sol-gel monoliths for optical determination of metal ion species is also discussed. The electrochemical determination of Cr(VI) by electrodeposited sol-gel modified electrodes is also presented.

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  1. Department of Chemistry, University of Tennessee, Knoxville, TN, 37996-1600, USA

    Royce N. Dansby-Sparks, RuiZhuo Ouyang & Zi-Ling Xue

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  1. Royce N. Dansby-Sparks
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Correspondence to Zi-Ling Xue.

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Supported by the US National Science Foundation, National Institutes of Health, and Measurement and Control Engineering Center

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Dansby-Sparks, R.N., Ouyang, R. & Xue, ZL. Optical and electrochemical sol-gel sensors for inorganic species. Sci. China Ser. B-Chem. 52, 1777–1788 (2009). https://doi.org/10.1007/s11426-009-0278-6

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