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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Fleaca, C.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (4/4 displayed)
- 2010Direct Production of a Novel Iron-Based Nanocomposite from the Laser Pyrolysis of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mrow><mml:mrow><mml:mtext>Fe</mml:mtext><mml:msub><mml:mrow><mml:mrow><mml:mtext>(</mml:mtext><mml:mrow><mml:mtext>CO</mml:mtext></mml:mrow><mml:mtext>)</mml:mtext></mml:mrow></mml:mrow><mml:mtext>5</mml:mtext></mml:msub></mml:mrow><mml:mo>/</mml:mo><mml:mrow><mml:mtext>MMA</mml:mtext></mml:mrow></mml:mrow></mml:mrow></mml:math>Mixtures: Structural and Sensing Propertiescitations
- 2010Direct Production of a Novel Iron-Based Nanocomposite from the Laser Pyrolysis of Fe(CO)5/MMA Mixtures: Structural and Sensing Propertiescitations
- 2008Photochemistry Aspects of the Laser Pyrolysis Addressing the Preparation of Oxide Semiconductor Photocatalystscitations
- 2007Aligned carbon nanotubes catalytically grown on iron-based nanoparticles obtained by laser-induced CVDcitations
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article
Direct Production of a Novel Iron-Based Nanocomposite from the Laser Pyrolysis of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mrow><mml:mrow><mml:mtext>Fe</mml:mtext><mml:msub><mml:mrow><mml:mrow><mml:mtext>(</mml:mtext><mml:mrow><mml:mtext>CO</mml:mtext></mml:mrow><mml:mtext>)</mml:mtext></mml:mrow></mml:mrow><mml:mtext>5</mml:mtext></mml:msub></mml:mrow><mml:mo>/</mml:mo><mml:mrow><mml:mtext>MMA</mml:mtext></mml:mrow></mml:mrow></mml:mrow></mml:math>Mixtures: Structural and Sensing Properties
Abstract
<jats:p>Iron/iron oxide-based nanocomposites were prepared by IR laser sensitized pyrolysis of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mtext>Fe</mml:mtext><mml:msub><mml:mrow><mml:mrow><mml:mo>(</mml:mo><mml:mrow><mml:mtext>CO</mml:mtext></mml:mrow><mml:mo>)</mml:mo></mml:mrow></mml:mrow><mml:mn>5</mml:mn></mml:msub></mml:mrow></mml:math>and methyl methacrylate (MMA) mixtures. The morphology of nanopowder analyzed by TEM indicated that mainly core-shell structures were obtained. X-ray diffraction techniques evidence the cores as formed mainly by iron/iron oxide crystalline phases. A partially degraded (carbonized) polymeric matrix is suggested for the coverage of the metallic particles. The nanocomposite structure at the variation of the laser density and of the MMA flow was studied. The new materials prepared as thick films were tested for their potential for acting as gas sensors. The temporal variation of the electrical resistance in presence of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mrow><mml:mtext>NO</mml:mtext></mml:mrow><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math>, CO, and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mrow><mml:mtext>CO</mml:mtext></mml:mrow><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math>, in dry and humid air was recorded. Preliminary results show that the samples obtained at higher laser power density exhibit rather high sensitivity towards<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mrow><mml:mtext>NO</mml:mtext></mml:mrow><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math>detection and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mrow><mml:mtext>NO</mml:mtext></mml:mrow><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math>selectivity relatively to CO and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mrow><mml:mtext>CO</mml:mtext></mml:mrow><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math>. An optimum working temperature of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msup><mml:mrow><mml:mn>200</mml:mn></mml:mrow><mml:mi>°</mml:mi></mml:msup><mml:mtext>C</mml:mtext></mml:mrow></mml:math>was found.</jats:p>