...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Polymers for advanced technologies >Macromolecular nature of nanosheets of quasi-TiO_2 from (tetra-isopropyl)orthotitanate modified by methacrylic acid
【24h】

Macromolecular nature of nanosheets of quasi-TiO_2 from (tetra-isopropyl)orthotitanate modified by methacrylic acid

机译：甲基丙烯酸改性的（四异丙基）甲钛酸酯的准TiO_2纳米片的大分子性质

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this paper we concentrate on the general behavior of oxotitanium hydrosol, which was earlier developed by us as a precursor of the TiO_2 nanoparticles and nanocomposite. The oxotitanium hydrosol was synthesized by the chemical decomposition of a molecular complex of the methacrylic acid/(tetra-isopropyl)orthotitanate (MAA/TIPT) by means of the hydrogen peroxide. The raw product chemical decomposition of MAA/TIPT is the colloidal suspension of the oxotitanium compound in the water. The oxotitanium compound was separated from hydrosol and identified on the basis of X-ray and Raman spectroscopy investigations. The status of water in the hydrosol was also investigated by the Raman spectroscopy. The photophysical behaviors of the oxotitanium hydrosol on the basis of the light absorption and photoluminescence (PL) investigations are presented. The light absorption (260 nm) and PL emission (313 nm) allow us to identify the inorganic phase of hydrosol as nanosheets' crystallites of quasi-TiO_2. Macromolecular nature of nanosheets of quasi-TiO_2 was revealed only for a higher concentration solution of nanosheets' crystallites of quasi-TiO_2 at the hydrosol. A macromolecular nature of nanosheets of quasi-TiO_2 by the red shift of absorption edge and PL wavelength with increase in the concentration of the oxotitanium hydrosol as well as the formation of hydrogels and birefringence developed under an influence of mechanical shearing is evidenced.
机译：在本文中，我们专注于氧钛钛溶胶的一般行为，氧钛钛溶胶是由我们较早开发为TiO_2纳米颗粒和纳米复合材料的前体。氧钛钛水溶胶是通过过氧化氢对甲基丙烯酸/（四异丙基）邻钛钛酸酯（MAA / TIPT）的分子配合物进行化学分解而合成的。 MAA / TIPT的粗产物化学分解是氧钛化合物在水中的胶体悬浮液。从水溶胶中分离出氧钛钛化合物，并根据X射线和拉曼光谱研究进行鉴定。还通过拉曼光谱法研究了水溶胶中水的状态。提出了基于光吸收和光致发光（PL）研究的氧钛钛溶胶的光物理行为。光吸收（260 nm）和PL发射（313 nm）使我们能够将水溶胶的无机相鉴定为准TiO_2纳米片的微晶。仅在水溶胶中，对于较高浓度的准TiO_2纳米片微晶溶液，才揭示了准TiO_2纳米片的大分子性质。证明了随着吸收性红钛水溶胶浓度的增加，吸收边缘和PL波长的红移，准TiO_2纳米片的大分子性质，以及在机械剪切作用下形成的水凝胶和双折射现象。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号