...
hydrothermal
synthesis
of
ZnO
nanowires
arrays
on
Al-doped
ZnO
seed
layer
and
patterning
of
ZnO
nanowires
arrays
via
surface
modification
of
substrate
Jin
Zhang
a
,
...
1.
Schematic
representation
of
the
patterning
process
of
the
ZnO
NW
arrays
on
silicon
substrate.
2.
Experimental
2.1.
Preparation
of
the
AZO
s...
... 40 g.
3906 X.C. Song et al. / Materials Letters 61 (2007) 3904–3908
surrounding conditions such as temperature, pressure, and composition
of the solution [21]. The formations of nanowires first ... the content of the assisted K
2
SO
4
plays an important
role in the specific morphologies of WO
3
. No nanowires of WO
3
could
be obtained without K
2
SO
4
, and the purity of the...
... hydrothermal preparation
conditions. The structure of rutile consists of chains of TiO
6
octahedra along the c-axis [23]. The TiO
6
octahedra in the chain
connect through one shared edge, while ... is well known, surface features of a substrate have strong
impact on the morphology of one-dimensional material grown on
the substrate. Therefore, pre-treatment of the substrate i...
... ammonia solution
and forms Sn(OH)
2−
6
anions.
Sn(OH)
4
hydrothermal condition
−→ SnO
2
+ 2H
2
O (7)
(Sn(OH)
6
)
2−
hydrothermal condition
−→ SnO
2
+ 2H
2
O + 2OH
−
(8)
The concentration of tin ... tin ions in solution is of influencing to the
diameter of nanowires. We found that the molar ratio of Sn
4+
,to
OH
−
, ions for the optimal growth of elongated SnO
2
nanowires is
1:...
... 1C). Pre-
vious works show that the high concentration of NH
3
Á H
2
Ois
favorable for the formation of ZnO with rod-like morphology
[30]. The concentration of NH
3
Á H
2
O is 15 mol/L in present
experiment, ... synthesized ZnO nanorod arrays on
glass substrates by hydrothermal process. Besides, Qin et al.
[20] reported the bush-like ZnO nanosheets film on conductive
transp...
... assisted hydrothermal synthesis of single crystalline ZnO nanorods for
gas sensor application
Prabhakar Rai, Hyeon-Min Song, Yun-Su Kim, Min-Kyung Song, Pyong-Rok Oh,
Jeong-Mo Yoon, Yeon-Tae Yu
⁎
Division ... these ZnO nanorods are single crys-
talline in nature, with a growth direction along the c-axis.
Fig. 2 shows the resistance change of ZnO nanorods at various
temperatures...
... activity of ZnO is strongly influenced by
the methods and conditions of preparation which have great ef-
fects on the microstructures of the materials, such as crystal size,
orientation and morphology, ... of ZnO fabricated by hydrothermal
method [18].
The surfactants or alkaline used in the reaction is inconsistent
with the concept of ‘‘green’’ chemistry that is utilization...
... corresponding to the (1 1 1) planes of
silicon. The crystallinity of the nanowires is con-
siderably higher when only argon was used instead
of a mixture of argon and hydrogen. The role of
hydrogen ... discussion
Heating silicon powder at 1200 °C, in the ab-
sence of any activated carbon, yields a small pro-
portion of SiNWs. In Fig. 1a, we show a typical
SEM image of the pr...
... Synthesis of silicon nanowires after hydrogen radical treatment
Minsung Jeon
⁎
, Koichi Kamisako
Department of Electronic and Information Engineering, Tokyo University of Agriculture ... catalysts,
such as the dispersion of nano-size metal particles, electroless metal
deposition, laser ablation, evaporation, and immobilization of metal
colloidal suspensions [13–16]. In this arti...
... distributions of
properties such as response time, precise controls of properties,
regular arrangement of particles on electrode, etc.
Hydrothermal synthesis from Na
2
WO
4
in a low pH region is
one of ... condition and their size
distribution evaluated from TEM observations.
Fig. 2. XRD patterns of (a) particles obtained in the standard condition and
(b) standard of WO
3
·H...