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A Selective Iodide Ion Sensor Electrode Based on Functionalized ZnO Nanotubes
Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, The Institute of Technology.
Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology.
Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, The Institute of Technology.ORCID iD: 0000-0001-6235-7038
2013 (English)In: Sensors, ISSN 1424-8220, E-ISSN 1424-8220, Vol. 13, no 2, 1984-1997 p.Article in journal (Refereed) Published
Abstract [en]

In this research work, ZnO nanotubes were fabricated on a gold coated glass substrate through chemical etching by the aqueous chemical growth method. For the first time a nanostructure-based iodide ion selective electrode was developed. The ZnO nanotubes were functionalized with miconazole ion exchanger and the electromotive force (EMF) was measured by the potentiometric method. The iodide ion sensor exhibited a linear response over a wide range of concentrations (1 × 10−6 to 1 × 10−1 M) and excellent sensitivity of –62 ± 1 mV/decade. The detection limit of the proposed sensor was found to be 5 × 10−7 M. The effects of pH, temperature, additive, plasticizer and stabilizer on the potential response of iodide ion selective electrode were also studied. The proposed iodide ion sensor demonstrated a fast response time of less than 5 s and high selectivity against common organic and the inorganic anions. All the obtained results revealed that the iodide ion sensor based on functionalized ZnO nanotubes may be used for the detection of iodide ion in environmental water samples, pharmaceutical products and other real samples.

Place, publisher, year, edition, pages
Basel, Switzerland: MDPI AG , 2013. Vol. 13, no 2, 1984-1997 p.
Keyword [en]
ion selective electrode, ZnO nanotubes, miconazole nitrate, potentiometric technique, potentiometric titration
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-90680DOI: 10.3390/s130201984ISI: 000315403300035OAI: oai:DiVA.org:liu-90680DiVA: diva2:614182
Available from: 2013-04-04 Created: 2013-04-03 Last updated: 2017-12-06Bibliographically approved

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Hussain Ibupoto, ZafarKhun, KimleangWillander, Magnus

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