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From Surfactant–Inorganic Mesostructures to Tungsten Nanowires
Author(s) -
Li Yadong,
Li Xiaolin,
Deng ZhaoXiang,
Zhou Beichuan,
Fan Shoushan,
Wang Junwei,
Sun Xiaoming
Publication year - 2002
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/1521-3773(20020118)41:2<333::aid-anie333>3.0.co;2-5
Subject(s) - tungsten , lamellar structure , nanowire , pulmonary surfactant , materials science , pyrolysis , ion , chemical engineering , nanotechnology , composite material , metallurgy , chemistry , engineering , organic chemistry
Bulk quantities of uniform tungsten nanowires 3 with diameters of 20–80 nm and lengths ranging from 5 to 30 μm 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.