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- Title
Interconnected Porous Monolith Prepared via UiO‐66 Stabilized Pickering High Internal Phase Emulsion Template.
- Authors
Wang, Jierui; Zhu, He; Li, Bo‐geng; Zhu, Shiping
- Abstract
High internal phase emulsion (HIPE) templating offers an efficient approach to prepare 3D hierarchical porous metal–organic framework (MOF)‐based monoliths. However, conventional poly‐Pickering HIPEs synthesized from MOF‐stabilized HIPEs have low permeability due to closed‐cell structures, thus limiting their applications. Herein, interconnected porous MOF monoliths, prepared by adding a small amount of polyvinyl alcohol (PVA) as co‐stabilizer into UiO‐66 stabilized Pickering HIPE templates are reported. The morphology of the porous monoliths was studied by scanning electron microscopy (SEM). The pore size could be well controlled by varying the PVA concentration. A unique morphology, formed by an ice template, was clearly seen on the cell wall. The pores were thus interconnected. The mass transfer performance of the monoliths having different cell structures was investigated by CO2 adsorption. The interconnected porous structure significantly accelerated the CO2 adsorption process, as well as enhancing the saturated adsorption capacity. Set in stone: Interconnected porous MOF monoliths prepared by adding a small amount of polyvinyl alcohol as co‐stabilizer into UiO‐66 stabilized Pickering HIPE templates are reported in this work. The pore size could be well controlled by varying the PVA concentration. Compared to the closed porous monoliths, the open porous structure showed an improved mass transfer performance in the CO2 adsorption process, having higher adsorption capacities and faster adsorption rates.
- Subjects
MACROPOROUS polymers; METAL-organic frameworks; EMULSION testing; PERMEABILITY; POLYVINYL alcohol; SCANNING electron microscopy; SODIUM dodecyl sulfate
- Publication
Chemistry - A European Journal, 2018, Vol 24, Issue 61, p16426
- ISSN
0947-6539
- Publication type
Article
- DOI
10.1002/chem.201803628