Improved CO2 adsorption capacity and CO2/CH4 and CO2/N2 selectivity in novel hollow silica particles by modification with multi-walled carbon nanotubes containing amine groups

Accumulation of greenhouse gases (GHGs) in the atmosphere is responsible for enhanced global warming of our planet. In the present study, hollow silica spherical particles (HSSP) and multi-walled carbon nanotubes containing amine groups composite (denoted NH2[email protected]) were synthesized as adsorbents in a single-step and used to investigate the adsorption capacity and selectivity of CO2, CH4 and N2. The crystal structures and morphology...