Molten salt synthesis of single-crystalline K2Ti6O13 annular nanostructures.
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.
Nanjing National Laboratory of Microstructures, Jiangsu Provincial Laboratory for NanoTechnology, Department of Physics, Nanjing University, Nanjing 210093, China.
Xianke
X
Zhang
Shaolong
S
Tang
Jiangying
J
Yu
Lin
L
Zhai
Yangguang
Y
Shi
Yu
Y
Deng
Youwei
Y
Du