Matchstick-Like Cu<sub>2</sub>S@Cu<sub><i>x</i></sub>O
Nanowire Film: Transition of Superhydrophilicity to Superhydrophobicity
Cailong Zhou
Huijing Li
Jing Lin
Kun Hou
Zhijie Yang
Pihui Pi
Shouping Xu
Xiufang Wen
Jiang Cheng
10.1021/acs.jpcc.7b03645.s003
https://acs.figshare.com/articles/media/Matchstick-Like_Cu_sub_2_sub_S_Cu_sub_i_x_i_sub_O_Nanowire_Film_Transition_of_Superhydrophilicity_to_Superhydrophobicity/5363692
We
fabricated a matchstick-like Cu<sub>2</sub>S@Cu<sub><i>x</i></sub>O nanowire film on copper mesh by applying a CuÂ(OH)<sub>2</sub> nanowires template-sacrificial method, which can transformed
from superhydrophilic to superhydrophobic just after storage in air
for a certain period without any further organic modification. The
surface morphology, chemical composition and the wettability were
investigated by Scanning Electron Microscopy (SEM), X-ray diffractometer
(XRD), Raman, X-ray Photoelectron Microscopy (XPS), and contact angle
measurement. Results showed that the change of surface chemical composition
and the trapped air among the matchstick-like structures were the
decisive factors for the wettability transition. Therefore, on-demand
oil/water separation was achieved, which was performed by using the
superhydrophilic–underwater superoleophobic mesh for separating
light oil/water mixtures and the superhydrophobic one for separating
heavy oil/water mixtures.
2017-08-22 00:00:00
mixture
surface morphology
matchstick-like structures
superhydrophilic
copper mesh
contact angle measurement
Scanning Electron Microscopy
SEM
surface chemical composition
XRD
XPS
nanowire
chemical composition
superhydrophobic
Cu
X-ray Photoelectron Microscopy
wettability transition