Amine-functionalized solid adsorbents are promising materials for efficient CO2 capture, but their practical deployment is constrained by challenges in balancing CO2 adsorption capacity, adsorption kinetics and regeneration energy efficiency. Here, the authors show that incorporating sodium dihydrogen phosphate into tetraethylenepentamine-functionalized mesoporous silica gel (HP-TEPA/MSG) results in atomic-scale proton transfer networks that accelerate proton shuttling during adsorption-desorption cycles, resulting in a higher CO2 capacity, faster adsorption kinetics and a lower regeneration energy.
- Shichao Zhang
- Yang Liu
- Chuncheng Chen
