1 research outputs found
Hollow Carbon Spheres with Abundant Micropores for Enhanced CO<sub>2</sub> Adsorption
The interest in the
design and controllable fabrication of hollow
carbon spheres (HCSs) emanates from their tremendous potential applications
in adsorption, energy conversion and storage, and catalysis. However,
the effective synthesis of uniform HCSs with high surface area and
abundant micropores remains a challenge. In this work, HCSs with tunable
microporous shells were rationally synthesized via the hard-template
method using resorcinol (R) and formaldehyde (F) as a carbon precursor.
HCSs with a very high surface area (1369 m<sup>2</sup>/g) and abundant
micropores (0.53 cm<sup>3</sup>/g) can be obtained with the assistance
of additional inorganic silanes (TEOS) simultaneously with the carbon
source (RF). Interestingly, the extra-abundant micropores showed favorable
adsorption for CO<sub>2</sub>, resulting in a 1.5 times increase in
the CO<sub>2</sub> adsorption capacity compared to that of normal
HCSs under the same conditions. Meanwhile, these HCSs hold potential
for use in the separation of gases such as CO<sub>2</sub> and N<sub>2</sub>