摘要
采用甲醛有机诱导在水热条件下制备了形貌新颖的WO3粉体,使用XRD,SEM,TEM,BET等手段进行结构和形貌表征,并利用测色计对所制备的样品进行光致变色性能测试.结果表明,合成的WO3粉体仍为六方相,以甲醛为诱导剂合成的粉体是由WO3纳米立方体簇集成的大小均匀的微球团聚而成,纳米立方体的边长为20～50nm,簇集形成的微球直径为500～800nm,这种特殊的形貌有利于光生质子的产生和传输,从而提高了合成的WO3粉体的光致变色性能.
The WO3 powder was prepared by a hydrothermal method using formaldehyde as an organic inducer, and characterized by XRD, SEM, TEM and BET. Furthermore, its photochromic properties were studied by a color difference meter. The results indicate that the WO3 is hexagonal and has a particular structure. Under the SEM and TEM observations, it was found that these WO3 microspheres induced by HCOH comprised many WO3 cubes. The edge lengths of the WO3 cube range from 20 to 50 nm, and the average diameter of these microspheres is 500-800 nm. Moreover, the special structure of this induced product provides a better proton diffusion path, thus resulting in its high photochromic properties.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
2009年第2期174-178,共5页
Acta Chimica Sinica
基金
国家自然科学基金青年基金(No. 50702052)资助项目
湖北大学高分子材料湖北省重点实验室开放基金资助项目.
关键词
WO3粉体
光致变色
甲醛
有机诱导
WO3 powder
photochromism
formaldehyde
organic induce
