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From surfactant-inorganic mesostructures to tungsten nanowires
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| Li, Yadong;Li, Xiaolin;Deng, Zhao-Xiang;Zhou, Beichuan;Fan, Shoushan;Wang, Junwei;Sun, Xiaoming Angewandte Chemie - International Edition v 41 n 2 Jan 18 2002. p 333-335 |
关键词 Nanostructured materials;Tungsten;Surface active agents;Pyrolysis;Ions;Wire;Vacuum applications;Composite materials 摘 要Bulk quantities of uniform tungsten nanowires 3 with diameters of 20-80 nm and lengths ranging from 5 to 30 mum were obtained by a simple vacuum-controlled pyrolysis process from lamellar composites of WO//4**2**- ions and cetyltrimethylammonium (CTA**+) surfactant ions.The lamellar composites were obtained from aggregates of CTA - WO//4 ion pairs (1).The cylindrical scrolls 2 are probably the first product of the pyrolysis; this confines the carbothermal reaction and results in the formation of the nanowires.
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