Journal
NANOTECHNOLOGY
Volume 22, Issue 21, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0957-4484/22/21/215501
Keywords
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Funding
- Fundamental Research Funds for the Central Universities [N090405017, N100405109]
- Liaoning Natural Science Foundation [20091027]
- Specialized Research Fund for the Doctoral Program of Higher Education of China [20090042120025]
- National Natural Science Foundation of China [51072038]
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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 degrees C and maintains 2.6 at 120 degrees 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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