...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Structural Role of Fluoride in the Ion-Conducting Glass System B2O3-PbO-LiF Studied by Single- and Double-Resonance NMR
【24h】

Structural Role of Fluoride in the Ion-Conducting Glass System B2O3-PbO-LiF Studied by Single- and Double-Resonance NMR

机译：通过单共振和双共振NMR研究氟在离子导电玻璃体系B2O3-PbO-LiF中的结构作用

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

The local structure of an ion-conducting glass with nominal composition 5OB2O3— 10PbO—40LiF has been investigated by complementary ~7Li, ~(11)B, ~(19)F, and ~(207)Pb single- and double-resonance experiments. The results give insight into the structural role of the lithium fluoride additive in borate glasses: (1) LiF is seen to actively participate in the network transformation process contributing to the conversion of three- into four-coordinate boron units, as shown by ~(11)B single-resonance as well as by ~(11)B{~(19)F} and ~(19)F{~(11)B} double-resonance experiments. (2) ~(19)F signal quantification experiments suggest substantial fluoride loss, presumably caused by formation of volatile BF3. A part of the fluoride remains in the dopant role, possibly in the form of small LiF-like cluster domains, which serve as a mobile ion supply. (3) The extent of lithium—fluorine and lead—fluorine interactions has been characterized by ~7Li{~(19)F} and ~(207)Pb{~(19)F} REDOR and SEDOR experiments. On the basis of these results, a quantitative structural description of this system has been developed.
机译：通过互补〜7Li，〜（11）B，〜（19）F和〜（207）Pb单共振和双共振实验研究了标称成分为5OB2O3-10PbO-40LiF的离子导电玻璃的局部结构。结果使人们深入了解了氟化锂添加剂在硼酸盐玻璃中的结构作用：（1）可以看出LiF积极参与了网络转化过程，从而促进了三坐标到四坐标硼单元的转化，如〜（ 11）B单共振以及〜（11）B {〜（19）F}和〜（19）F {〜（11）B}双共振实验。 （2）〜（19）F信号定量实验表明，氟化物大量损失，可能是由于挥发性BF3的形成所致。氟化物的一部分保留在掺杂剂中，可能以小的LiF状簇域的形式存在，这些簇域用作移动离子源。 （3）锂-氟和铅-氟相互作用的程度已通过〜7Li {〜（19）F}和〜（207）Pb {〜（19）F} REDOR和SEDOR实验表征。基于这些结果，已经开发了对该系统的定量结构描述。

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