Growth and properties of Ag-doped ZnO nanoflowers for highly sensitive phenyl hydrazine chemical sensor application.

Autor: Ibrahim AA; Department of Chemistry, Faculty of Sciences and Arts, Najran University, Najran University, P.O. Box 1988, Najran 11001, Saudi Arabia., Dar GN, Zaidi SA, Umar A, Abaker M, Bouzid H, Baskoutas S
Jazyk: angličtina
Zdroj: Talanta [Talanta] 2012 May 15; Vol. 93, pp. 257-63. Date of Electronic Publication: 2012 Feb 22.
DOI: 10.1016/j.talanta.2012.02.030
Abstrakt: We report here the fabrication of a robust, highly sensitive, reliable and reproducible phenyl hydrazine chemical sensor using Ag-doped ZnO nanoflowers as efficient electron mediators. The Ag-doped ZnO nanoflowers were synthesized by facile hydrothermal process at low-temperature and characterized in detail in terms of their morphological, structural, compositional and optical properties. The detailed morphological and structural characterizations revealed that the synthesized nanostructures were flower-shaped, grown in very high-density, and possessed well-crystalline structure. The chemical composition confirmed the presence of Ag into the lattices of Ag-doped ZnO nanoflowers. High sensitivity of ≈ 557.108 ± 0.012 mAcm(-2)(mol L(-1))(-1) and detection limit of ≈ 5 × 10(-9) mol L(-1) with correlation coefficient (R) of 0.97712 and short response time (10.0 s) were observed for the fabricated chemical sensor towards the detection of phenyl hydrazine by using a simple current-voltage (I-V) technique. Due to high sensitivity and low-detection limit, it can be concluded that Ag-doped ZnO nanoflowers could be an effective candidate for the fabrication of phenyl hydrazine chemical sensors.
(Copyright © 2012 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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