Self-assembly of KxWO3 nanowires into nanosheets by an oriented attachment mechanism.
The KxWO3 nanosheets consisting of superfine nanowires were successfully synthesized in ambient air. The detailed electron microscopy and X-ray diffraction investigations imply that the nanosheets were obtained by self-assembly of the ordered nanowires with exposed {0110}H facets. The sheet morphology is closely related with the growth conditions including temperature and time, etc. A possible mechanism based on the oriented attachment of neighboring nanowires for the formation of nanosheets is proposed. Our results shed light on the interfacial characteristics of self-assembled KxWO3 nanowires and can serve as guidance to the future design of relevant two-dimensional structures for various electrical and optical applications.
School of Physics and Technology, Center for Electron Microscopy and MOE Key Laboratory of Artificial Micro- and Nano-structures, Wuhan University , Wuhan 430072, China.
Shuangfeng
S
Jia
He
H
Zheng
Hongqian
H
Sang
Wenjing
W
Zhang
Han
H
Zhang
Lei
L
Liao
Jianbo
J
Wang