High gas sensing performance of one-step-synthesized Pd-ZnO nanoflowers due to surface reactions and modifications.
Nanotechnology
; 22(21): 215501, 2011 May 27.
Article
en En
| MEDLINE
| ID: mdl-21451228
ABSTRACT
Pd-ZnO nanoflowers with high uniformity were prepared via a novel one-step hydrothermal route. High sensitivity, fast response, high selectivity and low work temperature are obtained from Pd-ZnO nanoflower sensors. The sensitivity upon exposure to 300 ppm ethanol is up to 168 at 300 °C and maintains 2.6 at 120 °C. Such behaviors can be attributed to Schottky contact at the Pd/ZnO interface and catalytic activity of Pd nanoparticles. The present results open a way for uniform surface modification of one-dimensional nanostructures with Pd nanoparticles and further enhancing their gas sensing performance.
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01-internacional
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MEDLINE
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En
Revista:
Nanotechnology
Año:
2011
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Article