期刊
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
卷 -, 期 11, 页码 1736-1742出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejic.200901214
关键词
Lead; Tungsten; Self-assembly; Surfactants; Morphology
资金
- Natural Science Foundation (NSF) of China [20421303, 20871030, 20521140450]
- PRC [2006CB202502, 2006CB0N0302]
- Shanghai Nanotech Promotion Center [065211111024]
- Shanghai Education Committee [02SG01]
- China Postdoctoral Scientific Fund [20070420085]
- Northwest University [PR09047]
- Education Ccommittee of Shanxi Province [09JS089]
Lead tungstate (PbWO4) crystals with unique hierarchical morphologies have been successfully synthesized in the presence of a triblock copolymer poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (EO70-PO20-EO70, P-123) under mild hydrothernial conditions. When reaction temperature is changed from 140 to 180 and 220 degrees C, the as-obtained PbWO4 samples can vary from flat tubular to rod-shaped arrays and complex slabs with porous film texture on their surface. Meanwhile, by using polyvinylpyrolidone (PVP), cetyltrimethylammonium bromide (CTAB), and hydroxycellulose with distinct functional groups as structure-directing agents, PbWO4 samples such as polyhedrons and rods with porous groove texture, as well as tube-shaped aggregate bundles, can be obtained. The optical properties of the as-made PbWO4 samples with various morphologies were examined by photoluminescence (PL) and Raman spectroscopy. Results show that PL of the rod-like arrays and microtube structures is redshifted relative to that of the complex slab sample. In general, the present synthesis route may be extended to prepare other inorganic nanomaterials with special functions.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据