| PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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Plasma Catalytic Synthesis of Silver Nanoparticles |
| ZHANG Yu-Tao1**, GUO Ying2, MA Teng-Cai3
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1School of Physics, Hunan University of Science and Technology, Xiangtan 411201
2School of Computer Science and Engineering, Hunan University of Science and Technology, Xiangtan 411201
3Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Ministry of Education), Dalian University of Technology, Dalian 116024
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| Cite this article: |
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ZHANG Yu-Tao, GUO Ying, MA Teng-Cai 2011 Chin. Phys. Lett. 28 105201 |
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Abstract We present the experimental results of plasma catalytic synthesis of colloidal silver nanoparticles, using AgNO3 as the precursor, ethanol as the solvent and reducing agent, and poly vinyl pyrrolidone (PVP) as the macromolecular surfactant. The plasma is generated by an atmospheric argon dielectric barrier discharge jet. Silver nanoparticles are produced instantly once the plasma is ignited. The system is not heated so it is necessary to use traditional chemical methods. The samples are characterized by UV−visible absorbance and transmission electron microscopy. For glow discharge mode no obvious silver nanoparticles are observed. For low voltage filamentary streamer discharge mode a lot of silver nanoparticles with the mean diameter of ∼3.5 nm are generated and a further increase of the voltage causes the occurrence of agglomeration.
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52.77.-j
81.07.Wx
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Received: 31 March 2011
Published: 28 September 2011
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