A geopolymer route to micro- and meso-porous carbon.

ABSTRACT: Hexagonal and wormhole-type mesoporous geopolymers were developed by controlling the concentration of a structure directing agent (cetrimonium bromide, CTAB) with fixed ratios of Si/Al, KOH/(Si + Al), and H₂O/(Si + Al), and their detailed porous structures were confirmed by TEM, N₂ adsorption-desorption and X-ray diffraction measurements. The as-prepared geopolymers were then used as templates to replicate porous carbons with various structures and porosities for CO₂ adsorption. To understand the correlation between the CO₂ adsorptivity and porous structures, we tuned the porosity of the geopolymer-templated carbons by modifying the structures of the geopolymers. The porous carbons obtained from the hexagonal-type porous geopolymers were found to

SUBMITTER: Pei YR 

PROVIDER: S-EPMC9049742 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature