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liushanhu

铁杆木虫 (著名写手)

[资源] 新文献-关于二氧化钛的，一个JACS，一个CC，

刚看到的，jacs上的是说控制二氧化钛形貌，CC上是单分散纳米颗粒
JACS
Controlling the morphology and size of
titanium dioxide (TiO2) nanostructures is crucial to
obtain superior photocatalytic, photovoltaic, and electrochemical
properties. However, the synthetic techniques
for preparing such structures, especially those with complex
configurations, still remain a challenge because of the
rapid hydrolysis of Ti-containing polymer precursors in
aqueous solution. Herein, we report a completely novel
approach—three-dimensional (3D) TiO2 nanostructures
with favorable dendritic architectures—through a simple
hydrothermal synthesis. The size of the 3D TiO2 dendrites
and the morphology of the constituent nano-units,
in the form of nanorods, nanoribbons, and nanowires, are
controlled by adjusting the precursor hydrolysis rate and
the surfactant aggregation. These novel configurations of
TiO2 nanostructures possess higher surface area and
superior electrochemical properties compared to nanoparticles
with smooth surfaces. Our findings provide an
effective solution for the synthesis of complex TiO2 nanoarchitectures,
which can pave the way to further improve
the energy storage and energy conversion efficiency of
TiO2-based devices.

CC
Monodisperse anatase titania nanoparticles with controllable
sizes (typically 10–300 nm) can be synthesized using an efficient
and straightforward protocol via fine tuning of the ionic strength
in the devised sol–gel methodology.[ Last edited by liushanhu on 2011-11-12 at 16:39 ]

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