With the rapid evolution of power and packing densities of microelectronic and energy storage devices, timely heat dissipation towards instantaneous high intensity heat flow is becoming increasingly significant to maintain...
Hierarchical macroporous TiO2/graphite-like
carbon hybrid
photocatalyts were successfully prepared by a facile method employing
a particle-stabilized high internal phase emulsion (Pickering emulsion)
as the template and sucrose as the carbon source. The results of this
study showed that mesopores, with diameters ranging from 10 to 50
nm, were homogeneously distributed on the cell-window structured macropore
walls that were armored by nano-sized TiO2 particles. Moreover,
a microporous graphitic layer of thickness ∼2 nm surrounded
the surface of the TiO2 particles. This type of hierarchical
macro-meso-microporous structure with high-efficiency diffusion and
mass transfer properties, along with the porous graphitic layers with
a high BET surface area, resulted in a hybrid catalyst possessing
high adsorption rate and capacity. In addition, the carbon layers
suppressed the transition temperature of titania (anatase to rutile)
by more than 200 °C. The green method presented here can potentially
be employed for the preparation of cost-effective environmental materials
toward the degradation of dyes and other pollutants.
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