Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 188, Issue -, Pages 1230-1234Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2013.07.112
Keywords
Carbon nanotubes; Gas sensor; Ag nanoparticles; CVD
Funding
- National Science Council of Taiwan [NSC 102-2221-E-150-046, NSC 101-2221-E-150-043]
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The authors reported the gas-phase CO2 and NH3 adsorption characteristics of Ag-decorated carbon nanotubes (CNTs). High-density CNTs were grown on an oxidized Si substrate by thermal chemical vapor deposition. The average length and diameter of the CNTs were approximately 4.52 mu m and 45 nm, respectively. Ag nanoparticles were coated onto the nanotube surfaces to a thickness of approximately 7 nm. The Ag-coated CNTs were sensitive to CO2 and NH3 vapors and could be used to provide a sensor for these gases. The Ag-decorated samples showed stable, reproducible responses and good recovery. (C) 2013 Elsevier B. V. All rights reserved.
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