Enviro-friendly magnesium silicate/activated carbon nanocomposites for efficient CO₂ capture

Activated carbon (AC) was composited with magnesium silicate (MgSil) nanotubes to improve its CO₂ adsorption capability. The MgSil-AC nanocomposites were studied for their structural, morphological, and textural features and the findings indicated that the addition of magnesium silicate enhanced the thermal stability and textural properties of AC. A surface area of 768 m² g^-1 was obtained for the composite comprising of 20 wt% magnesium silicate, which also exhibited the highest adsorption efficacy, 40.3 cm³ g^-1 at ambient conditions, due to synergistic impact of magnesium silicate's intrinsic CO₂ affinity and the elevated surface area and porosity of AC.