Báo cáo hóa học: " Direct synthesis of ultrafine tetragonal BaTiO3 nanoparticles at room temperature" pptx
Báo cáo hóa học: " Direct synthesis of ultrafine tetragonal BaTiO3 nanoparticles at room temperature" pptx
... that of bulk BaTiO
3
materials. It is confirmed that the nanoparticles have
tetragonal phase at room temperature.
Keywords: BaTiO
3
, nanoparticle, room temperature
Introduction
Barium titanate ... Nan
3
and
Helen Lai Wah Chan
2
Abstract
A large quantity of ultrafine tetragonal barium titanate (BaTiO
3
) nanoparticles is directly synthesized at room
temperature. The cr...
Báo cáo hóa học: " Direct Synthesis and Characterization of Optically Transparent Conformal Zinc Oxide Nanocrystalline Thin Films by Rapid Thermal Plasma CVD" pptx
... uniform.
Influence of source temperature profile and growth
duration
We find clear evidence in the experimental data that
correlates the total duration of the Zn source heated at
and above the melting temperature ... pulses,
290s,Figure3b),and110nm(5pulses,445s,Figure
3c) at a growth rate of 16.7 nm/min. We also investi-
gated the influence of the resident ti me that the source
te...
báo cáo hóa học:" Direct effects of caffeine on osteoblastic cells metabolism: the possible causal effect of caffeine on the formation of osteoporosis" doc
... differentiation is a multistep-events modu-
lated by an integrated cascade of gene expression. These
events initially support proliferation, followed by matrix
maturation, and mineralization of the ... of programmed cell
death (PCD) is aimed at the removal of redundant, mis-
Osteobalsts DNA degradation induced by caffeineFigure 5
Osteobalsts DNA degradation induced by caffeine. Acti...
Báo cáo hóa học: " Direct-writing of PbS nanoparticles inside transparent porous silica monoliths using pulsed femtosecond laser irradiation" doc
... diameter estimated to 2
μm, was locat ed inside the volume of the silica matrix
and scanned laterally at a rate of 1 mm s
-1
. A tight net-
work of irradiated lines w ith a st ep size of 20 μmhas
been ... fem-
tosecond laser irradiation (800 nm, 1 kHz, and 184 f s)
followed by a heat treatment at a temperature of 450°C
to prec ipitate P bS nanoparticles inside irradiated areas...
Báo cáo hóa học: " Controllable synthesis of flake-like Al-doped ZnO nanostructures and its application in inverted organic solar cells" doc
... The schematic structure of
the IOSCs based on AZO nanostructures. (b) The cross-sectional FE-SEM images of AZO nanostructure arrays fabricated on FTO substrates in an
Al concentration of 4 mM ... approximately 58.7% compared
with that of un-doped ZnO-based IOSCs. This is attributed to that the flake-like AZO nanostructures of high s and
tunable morphology not only provide a high-con...
Báo cáo hóa học: " Facile synthesis of nano-Li4Ti5O12 for high-rate Li ion battery anodes" doc
... water
at room temperature. The solution was heated at 90°C to 100°C for 4 h with magnetic
stirring. Precipitates were obtained by centrifugation and repeated washing (five times
with DI water ... foil as the negative electrode, operating at 0.3
mV/s. Clear cathodic and anodic peaks appeared at approximately 1.46 and 1.7 V,
respectively, for the Li intercalation/deintercalation,...
Báo cáo hóa học: " Hydrothermal synthesis of MnO2/CNT nanocomposite with a CNT core/porous MnO2 sheath hierarchy architecture for supercapacitors" potx
... that the highly porous MnO
2
layer decorated on the surface of CNT is able to
facilitate the penetration of the electrolyte, leading to fast diffusion of the electrolyte
into the pores of ... F/g at a scan rate of 10 mV/s,
while it decreases to 68 F/g at a scan rate of 100 mV/s. Figure 6c shows the CV
curves of the MnO
2
/CNT nanocomposite electrode at different scan...
Báo cáo hóa học: " Solvothermal synthesis of uniform bismuth nanospheres using poly(N-vinyl-2-pyrrolidone) as a reducing agent" pptx
... Analysis (a) TG/DTA curves of thermal decomposition
of the white precipitation at a heating rate of 10°C/min in the N
2
atmosphere; (b) EDX pattern of the white precipitation.
Wu et al. Nanoscale ... Shape-controlled synthesis of platinum
nanocrystals for catalytic and electrocatalytic applications. Nano Today
2009, 4:81.
42. Kaczmarek H, Kamińska A, Światek M, Rabek JF: Photo-o...
Báo cáo hóa học: " Scalable synthesis of aligned carbon nanotubes bundles using green natural precursor: neem oil" doc
... Another
peak at 1640 cm
-1
[31] is associated with the vibration
of carbon (C = C) skeleton of the CNTs. It has been
suggested that no other attachments are present in
place of a carbon atom.
Conclusions
In ... using Ar gas. The flow rate of Ar
was 80 sccm. The experiments were conducted at differ-
ent temperature (750-850°C) at atmospheric pressure,
with a typical reaction time...
báo cáo hóa học:" Facile synthesis of uniform large-sized InP nanocrystal quantum dots using tris(tert-butyldimethylsilyl)phosphine" pdf
... diethyldithiocarbamate,
for shell formation (Figure 3a). Slow addition of the air-stable ZnS precursor
(diethyldithiocarbamate) at elevated temperature allowed shell formation on the surface of
each ... situ fabrication of InP/ZnS core-shell NQDs, the temperature of the growth solution of
InP was lowered after a 10-min growth to 200°C. Thirty milligrams of ZDC, 1 ml of TOP...