湿化学法制备的KTiOPO<sub>4</sub>@SiO<sub>2</sub>玻璃陶瓷纳米结构和透明性

引用本文: 李东林, 田苗, 李倩, 马守龙, 谢荣, 苟蕾, 樊小勇, 赵鹏. 湿化学法制备的KTiOPO₄@SiO₂玻璃陶瓷纳米结构和透明性[J]. 无机化学学报, 2013, 29(9): 1903-1908. doi: 10.3969/j.issn.1001-4861.2013.00.246 shu

Citation: LI Dong-Lin, TIAN Miao, LI Qian, MA Shou-Long, XIE Rong, GOU Lei, FAN Xiao-Yong, ZHAO Peng. Nanostructure and Transparency of KTiOPO₄@SiO₂ Nanocrystalline Glass-Ceramics by Wet-Chemical Route[J]. Chinese Journal of Inorganic Chemistry, 2013, 29(9): 1903-1908. doi: 10.3969/j.issn.1001-4861.2013.00.246 shu

湿化学法制备的KTiOPO₄@SiO₂玻璃陶瓷纳米结构和透明性

基金项目:
教育部高等学校科学技术重大项目培育资金项目(No.708084) (No.708084)

国家自然科学基金(No.21073021) (No.21073021)

中央高校基本科研业务费专项资金(No.CHD2010ZD008,CHD2011ZD007)资助项目。 (No.CHD2010ZD008,CHD2011ZD007)

摘要: 用湿化学法合成了25KTiOPO₄-75SiO₂透明纳米玻璃陶瓷。采用X射线衍射、场发射扫描电子显微镜和二次谐波发生对玻璃陶瓷物相及纳米结构进行了分析。透明凝胶块经过热处理后,从SiO₂基玻璃中析出了粒径为~30 nm的KTiOPO₄纳米晶体,形成了透明KTiOPO₄@SiO₂纳米玻璃陶瓷;凝胶粒子的烧结致密化消除了大量不规则介孔,但形成了少量30 nm的球状孔;这种相对致密的玻璃陶瓷在可见光波段的光学透射率为64%左右。根据纳米结构数据,利用瑞利散射模型分析了纳米结构对玻璃陶瓷透明性的影响,结果表明,KTiOPO₄晶体与SiO₂玻璃相折射率之差是降低致密纳米玻璃陶瓷透明性的主要因素。

关键词:

磷酸钛氧钾;二氧化硅;溶胶-凝胶;纳米玻璃陶瓷;透明性;二次谐波发生

English

Nanostructure and Transparency of KTiOPO₄@SiO₂ Nanocrystalline Glass-Ceramics by Wet-Chemical Route

1.
New Energy Materials & Devices Group, School of Materials Science and Engineering, Chang'an University, Xi'an 710061, China
Received Date: 21 January 2013
Fund Project:
教育部高等学校科学技术重大项目培育资金项目(No.708084)

国家自然科学基金(No.21073021)

中央高校基本科研业务费专项资金(No.CHD2010ZD008,CHD2011ZD007)资助项目。

Abstract: Transparent 25KTiOPO₄-75SiO₂ (KTP@SiO₂) nanocrystalline glass-ceramics were synthesized by the wet-chemical method. Morphology and nanostructure of the KTP nanocrystals embedded in the silicate glass were characterized by means of X-ray diffraction (XRD) and field emission scanning electron microscope (FESEM). The results show that, KTP nanocrystals with the size of ~30 nm are precipitated from SiO₂-based glass in the heat-treated transparent gels, forming KTiOPO₄@SiO₂ nanophase glass-ceramics. At the same time, a large amount of irregular mesopores were eliminated, but small amount of spherical nanopores with 30 nm-diameter form. This type of relatively dense glass-ceramic exhibits the optical transmittance of about 64% in the visible region. Based on nanostructure data, the effects of the nanostructure on the transparency of the glass-ceramics were analyzed according to Rayleigh model. It shows that the ratio of the refractive indices decreases the optical transmittance of the KTiOPO₄@SiO₂ nano-glass-ceramics in the visible region.

Key words:

KTiOPO₄;SiO₂;sol-gel;nano-glass-ceramics;transparency;second harmonic generation (SHG)

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沈阳化工大学材料科学与工程学院沈阳 110142

湿化学法制备的KTiOPO₄@SiO₂玻璃陶瓷纳米结构和透明性

English

Nanostructure and Transparency of KTiOPO₄@SiO₂ Nanocrystalline Glass-Ceramics by Wet-Chemical Route

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

湿化学法制备的KTiOPO4@SiO2玻璃陶瓷纳米结构和透明性

English

Nanostructure and Transparency of KTiOPO4@SiO2 Nanocrystalline Glass-Ceramics by Wet-Chemical Route

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

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CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

湿化学法制备的KTiOPO₄@SiO₂玻璃陶瓷纳米结构和透明性

Nanostructure and Transparency of KTiOPO₄@SiO₂ Nanocrystalline Glass-Ceramics by Wet-Chemical Route

CCS Chemistry：颜徐州、鲍哲南：你的皮肤可能是一片SPMs