Synthesis
of a new HKUST-1 composite based on single-walled carbon
nanotubes (SWCNTs) was successfully achieved (SWCNT@HKUST-1). SWCNTs
were used as templates to grow rod-like HKUST-1 crystals over the
surface of the nanotubes. N
2
adsorption properties showed
an increment on the surface area and pore volume for the SWCNT@HKUST-1
composite. Furthermore, the CO
2
capture increased, from
7.92 to 8.75 mmol g
–1
at 196 K up to 100 kPa, for
the SWCNT@HKUST-1 composite. This enhancement was directly associated
with the increase of the surface area of the composite. Additionally,
an increase in the CO
2
heat of adsorption was estimated,
from 30 to 39.1 kJ mol
–1
for the SWCNT@HKUST-1 composite.
In situ Raman experiments corroborated the favored CO
2
adsorption
for the composite and provided an insight into the augmented hydrophobicity
of the SWCNT@HKUST-1. Ethanol adsorption isotherms corroborated an
increase in the hydrophobicity of the material upon the incorporation
of carbon nanotubes.