4.6 Article

Ultra-high sensitive hydrazine chemical sensor based on low-temperature grown ZnO nanoparticles

Journal

ELECTROCHIMICA ACTA
Volume 69, Issue -, Pages 128-133

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2012.02.091

Keywords

ZnO nanoparticles; Hydrazine; Chemical sensor; Amperometry

Funding

  1. Department of Science and Technology (DST), India
  2. Ministry of Higher Education, Kingdom of Saudi Arabia

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Using well-crystalline ZnO nanoparticles (NPs), an ultra high sensitive hydrazine amperometric sensor has been fabricated and reported in this paper. The ZnO NPs have been synthesized by very simple aqueous solution process at 90 degrees C and characterized in detail in terms of their morphological, compositional, structural and optical properties. The detailed investigations reveal that the synthesized products are well-crystalline NPs, possessing wurtzite hexagonal phase and exhibit good optical properties. The fabricated amperometric hydrazine sensor exhibits ultra-high sensitivity of similar to 97.133 mu A cm(-2) mu M-1 and very low-detection limit of 147.54 nM. To the best of our knowledge, this is the first report in which an ultra-high sensitivity and low-detection limit have been obtained for the hydrazine chemical sensor based on ZnO nanostructures. (C) 2012 Elsevier Ltd. All rights reserved.

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