摘要
以碳酸铯和钨酸钠为原料,通过水热合成法在柠檬酸溶液中合成铯钨青铜(CsxWO3)粉体。研究了不同合成工艺条件对合成的CsxWO3粉体的微观结构和光吸收性能的影响,并探讨了紫外光照对CsxWO3薄膜的近红外遮蔽性能的影响。XRD分析表明,所合成的CsxWO3的结构为六方Cs0.32WO3。漫反射吸收光谱表明,随着水热反应时间延长、柠檬酸含量的增多,CsxWO3粉体在短波近红外光区的吸收逐渐增强,表现出强烈的近红外吸收性能。薄膜的透射光谱表明,在柠檬酸浓度为0.55mol/L、无乙醇参与反应3d所合成的CsxWO3薄膜具有良好的近红外遮蔽性能和光致变色性能,并且经紫外光照射后其薄膜的近红外遮蔽趋势进一步增强。
The CsrWOa powders were synthesized by hydrothermal method in citric acid solution using sodium tungstate and cesium carbonate as raw materials. The XRD patterns indicated that CsWO3 powders have hexagonal Cs0.32WO3 crystal structure. The diffuse reflectance absorption spectra showed that the near-infrared absorption performance of CsjWO3 powder were improved with the increasing of citric acid content and reaction time and CsWO3 powder showed good near-infrared absorption performance. The film transmittance spectra indicate that the film of CGWO3 synthesized by reaction 3 d with 0.55 mol/L citric acid had good photochromic properties and near-infrared shielding properties. The near infrared shielding properties were improved after UV irradiation.
出处
《大连工业大学学报》
CAS
北大核心
2013年第2期125-129,共5页
Journal of Dalian Polytechnic University
基金
教育部留学回国人员科研启动基金资助项目(20111139)
大连市科技计划资助项目(2007J23JH014)
关键词
铯钨青铜
水热合成法
吸收光谱
近红外遮蔽
CsTWO3
hydrothermal method
absorption spectra
near-infrared shielding
