Abstract
Platinum (Pt) nanoparticles were synthesized on tin dioxide (SnO2) nanowires by applying γ-ray radiolysis. The growth behavior of Pt nanoparticles was systematically investigated as a function of precursor concentration, illumination intensity and exposure time of the γ-rays. We found that these processing parameters greatly influenced the growth behavior of Pt nanoparticles in terms of size and formation density. Vapor-phase-grown SnO2 nanowires were uniformly covered with Pt nanoparticles by the radiolysis process. The Pt nanoparticle-functionalized SnO2 nanowires were tested as sensors for detecting reductive gases including carbon monoxide, toluene, and benzene. The results indicate that the γ-ray radiolysis is an efficient way of functionalizing the surface of oxide nanowires with catalytic Pt nanoparticles.
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Acknowledgment
This work was supported by Nuclear R&D program through the National Research Foundation of Korea.
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Choi, SW., Kim, S.S. Platinum nanoparticle-functionalized tin dioxide nanowires via radiolysis and their sensing capability. Journal of Materials Research 27, 1688–1694 (2012). https://doi.org/10.1557/jmr.2012.148
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DOI: https://doi.org/10.1557/jmr.2012.148