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A Simple Hydrothermal Method for the Large‐Scale Synthesis of Single‐Crystal Potassium Tungsten Bronze Nanowires
Author(s) -
Gu Zhanjun,
Ma Ying,
Zhai Tianyou,
Gao Bifen,
Yang Wensheng,
Yao Jiannian
Publication year - 2006
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200600077
Subject(s) - tungsten , bronze , nanowire , nanomaterials , materials science , alkali metal , nanotechnology , hydrothermal synthesis , hydrothermal circulation , metal , crystal (programming language) , single crystal , chemical engineering , crystallography , inorganic chemistry , metallurgy , chemistry , organic chemistry , engineering , computer science , programming language
The large‐scale synthesis of single‐crystal K x WO 3 tungsten bronze nanowires has been successfully realized by a hydrothermal method under mild conditions. Uniform K 0.33 WO 3 nanowires with diameters of 5–25 nm and lengths of up to several micrometers are obtained. It is found that the morphology and crystallographic forms of the final products are strongly dependent on the sulfate and citric acid, which may act as structure‐directing and soft‐reducing agent, respectively. Some other influential factors on the growth of tungsten bronze nanowires, such as temperature and reaction time, are also discussed. It is worth noting that other alkali metal tungsten bronzes such as (NH 4 ) x WO 3 , Rb x WO 3 , and Cs x WO 3 could also be selectively synthesized by a similar route. Thus, this novel and efficient method could provide a potential mild route to selectively synthesize various tungsten bronze on‐dimensional nanomaterials.