Controlled Synthesis of
Mesoporous Carbon Nanostructures
via a “Silica-Assisted” Strategy
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Abstract
We have established a facile and generalizable “silica-assisted”
synthesis for diverse carbon spheresa category that covers
mesoporous carbon nanospheres, hollow mesoporous carbon nanospheres,
and yolk-shell mesoporous carbon nanospheresby using phenolic
resols as a polymer precursor, silicate oligomers as an inorganic
precursor, and hexadecyl trimethylammoniumchloride as a template.
The particle sizes of the carbon nanospheres are uniform and easily
controlled in a wide range of 180–850 nm by simply varying
the ethanol concentrations. All three types of mesoporous carbon nanospheres
have high surface areas and large pore volumes and exhibit promising
properties for supercapacitors with high capacitance and favorable
capacitance retention