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Controlled Synthesis of ZnO Nanostructures for Sub-ppm-Level VOC Detection

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5 Author(s)
Shao-Lin Zhang ; Dept. of Mater. Sci. & Eng., Yonsei Univ., Seoul, South Korea ; Hyung-Gi Byun ; Jeong-Ok Lim ; Jeung-Soo Huh
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Various ZnO nanostructures, including nanoparticles, nanorods, nanotubes, and nanorings, were synthesized via a controlled synthesis by a facile sonochemical method combined with a chemical etching process. The morphology and structure of the fabricated nanomaterials were characterized by X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. The sensing properties of different ZnO nanostructures toward volatile organic compounds gases at sub-ppm levels were investigated. The differences in the sensing responses of various nanostructures were compared, and reasonable mechanisms are proposed here.

Published in:

Sensors Journal, IEEE  (Volume:12 ,  Issue: 11 )

Date of Publication:

Nov. 2012

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