Selective Thallium (I) Ion Sensor Based on Functionalised ZnO Nanorods | Zendy

Zafar Hussain Ibupoto | Zendy; Syed M. Usman Ali | Zendy; K. Khun | Zendy; M. Willander | Zendy

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Selective Thallium (I) Ion Sensor Based on Functionalised ZnO Nanorods

Author(s) -

Zafar Hussain Ibupoto,

Syed M. Usman Ali,

K. Khun,

M. Willander

Publication year - 2012

Publication title -

journal of nanotechnology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.347

H-Index - 29

eISSN - 1687-9511

pISSN - 1687-9503

DOI - 10.1155/2012/619062

Subject(s) - thallium , materials science , nanorod , potentiometric titration , electrode , ion , ionophore , substrate (aquarium) , analytical chemistry (journal) , selectivity , inorganic chemistry , nanotechnology , chemistry , chromatography , catalysis , calcium , biochemistry , oceanography , organic chemistry , geology , metallurgy

Well controlled in length and highly aligned ZnO nanorods were grown on the gold-coated glass substrate by hydrothermal growth method. ZnO nanorods were functionalised with selective thallium (I) ion ionophore dibenzyldiaza-18-crown-6 (DBzDA18C6). The thallium ion sensor showed wide linear potentiometric response to thallium (I) ion concentrations ( M to M) with high sensitivity of 36.87 ± 1.49 mV/decade. Moreover, thallium (I) ion demonstrated fast response time of less than 5 s, high selectivity, reproducibility, storage stability, and negligible response to common interferents. The proposed thallium (I) ion-sensor electrode was also used as an indicator electrode in the potentiometric titration, and it has shown good stoichiometric response for the determination of thallium (I) ion

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