title: Hierarchically porous aminosilica monolith as a CO2 adsorbent.
abstract: A facile strategy is successfully developed for the centimeter-scale preparation of hierarchically porous aminosilica monolith as a CO2 adsorbent just by simple processes of solvent-evaporation-induced coating, self-assembly, and concentration of tetraethyl orthosilicate sol on the surface of a polymer foam template without any adhesive composite material or hydrothermal treatment. (3-Aminopropyl) trimethoxysilane is immobilized on the surface of silica monolith via a gas-phase procedure. The silica frameworks of the monolith mimic those of the polymer foam template at the macroscale, and the frameworks are composed of the SBA-15 structure at the nanoscale. The hierarchically porous structure demonstrates improved properties over the single-mode porous component, with the macroporous framework ensuring mechanical stability and good mass transport properties, while the smaller pores provide the functionality for CO2 adsorption.
authors.affiliation: Environmental Radioactivity Assessment Team, Korea Atomic Energy Research Institute , 989-111 Daedeok-daero, Yuseong-gu, Daejeon 305-353, Korea.
authors.forename: Young Gun
authors.initials: YG
authors.lastname: Ko
authors.forename: Hyun Jeong
authors.initials: HJ
authors.lastname: Lee
authors.forename: Jae Yong
authors.initials: JY
authors.lastname: Kim
authors.forename: Ung Su
authors.initials: US
authors.lastname: Choi