Molten salt synthesis of single-crystalline K2Ti6O13 annular nanostructures.
Molten salt synthesis of single-crystalline K2Ti6O13 annular nanostructures.
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DOI：
10.1166/jnn.2010.2213
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发表时间：
2010-08
影响因子：
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通讯作者：
Xianke Zhang;Shaolong Tang;Jiangying Yu;L. Zhai;Yangguang Shi;Yu Deng;Youwei Du
中科院分区：
文献类型：
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作者：
Xianke Zhang;Shaolong Tang;Jiangying Yu;L. Zhai;Yangguang Shi;Yu Deng;Youwei Du
采用简单的熔盐法合成了K2Ti6O13单晶环状结构，无需模板和表面活性剂。环形结构有几种不同的类型，如纳米环、轮状环和盘状环。利用扫描电镜（SEM）、透射电镜（TEM）、选择性面积电子衍射（SAED）和高分辨率透射电镜（HRTEM）对每一种环进行了表征。这些环状结构是由K2Ti6O13纳米带在环形平面上逐圈自卷曲形成的。提出了自卷绕的驱动力，以使自发极化引入的局部静电能最小化。
Single-crystalline K2Ti6O13 ring-like structures have been synthesized via a simple molten salt method without any templates and surfactants. The annular structures have several different types, such as nanoring, wheel-like and diskette-like ring. Each type of rings was characterized individually by scanning electron microscopy (SEM), transmission electron microscopy (TEM), selected area electron diffraction (SAED) and high-resolution transmission electron microscopy (HRTEM). These annular structures are formed by the loop-by-loop self-coiling of K2Ti6O13 nanobelts in the ring plane. The driving force of self-coiling is suggested to minimize the local electrostatic energy introduced by spontaneous polarization.