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Article Dans Une Revue Microporous and Mesoporous Materials Année : 2020

Sandwich-type H2/CO2 membranes comprising of graphene oxide and sodalite crystals with adjustable morphology and size

Résumé

Sandwich-type membranes comprising of graphene oxide (GO) as a "bun" and sodalite (SOD) nanocrystals with different morphology and size as an inner layer were prepared. First, the SOD nanocrystals with spheroidal (size of 30 nm) and flake-like (size of 150 nm) morphology were synthesized from precursor suspensions containing the same amount of GO as a modifier but different amount of water. Second, the SOD nanocrystals with different morphology and size were deposited between two GO layers to form the sandwich-type membrane. The performance of the sandwich-type membranes in H2/CO2 gas separation was optimized by tuning the properties of the SOD inner layer. The membrane containing spheroidal SOD nanocrystals showed higher H2 permeance of 4003±1965 GPU and H2/CO2 selectivity of 45.5±1.7 at 25 ºC in comparison to the pristine GO membrane (1642±145 GPU and H2/CO2 selectivity of 11.2±2.1).

Domaines

Matériaux
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Dates et versions

hal-02893836 , version 1 (27-11-2020)

Identifiants

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Ge Yang, Hailing Guo, Zixi Kang, Shou Feng, Lei Zhao, et al.. Sandwich-type H2/CO2 membranes comprising of graphene oxide and sodalite crystals with adjustable morphology and size. Microporous and Mesoporous Materials, 2020, 300, pp.110120. ⟨10.1016/j.micromeso.2020.110120⟩. ⟨hal-02893836⟩
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