| Autor: |
Dhawale DS; Qatar Environment and Energy Research Institute (QEERI), Hamad Bin Khalifa University (HBKU), Qatar Foundation , P.O. Box 34110, Doha, Qatar., Gujar TP; Applied Functional Polymers, Department of Macromolecular Chemistry, University of Bayreuth , Bayreuth 95440, Germany., Lokhande CD; Centre for Interdisciplinary Studies, D. Y. Patil University , Kolhapur 416606, Maharashtra, India. |
| Jazyk: |
angličtina |
| Zdroj: |
Analytical chemistry [Anal Chem] 2017 Aug 15; Vol. 89 (16), pp. 8531-8537. Date of Electronic Publication: 2017 Aug 02. |
| DOI: |
10.1021/acs.analchem.7b02312 |
| Abstrakt: |
Development of highly sensitive and selective semiconductor-based metal oxide sensor devices to detect toxic, explosive, flammable, and pollutant gases is still a challenging research topic. In the present work, we systematically enhanced the liquefied petroleum gas (LPG) sensing performance of chemical bath deposited TiO 2 nanorods by decorating Pd nanoparticle catalyst. Surface morphology with elemental mapping, crystal structure, composition and oxidation states, and surface area measurements of pristine TiO 2 and Pd:TiO 2 nanorods was examined by high resolution transmission electron microscopy with energy-dispersive X-ray spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and nitrogen adsorption-desorption characterization techniques. LPG sensing performance of pristine TiO 2 and Pd:TiO 2 nanorods was investigated in different LPG concentration and operating temperature ranges. The LPG response of 21% for pristine TiO 2 nanorods is enhanced to 49% after Pd catalyst decoration with reasonably fast response and recovery times. Further, the sensor exhibited long-term stability, which could be due to the strong metal support (Pd:TiO 2 ) interaction and catalytic properties offered by the Pd nanoparticle catalyst. The work described herein demonstrates a general and scalable approach that provides a promising route for rational design of variety of sensor devices for LPG detection. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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