We describe the sol-gel synthesis of the two new chalcogels KFeSbS3 and NaFeAsS3, which demonstrate excellent adsorption selectivity for volatile hydrocarbons and gases. These predominantly mesoporous materials have been synthesized by reacting Fe(OAc)2 with K3SbS3 or Na3AsS3 in a formamide/water mixture at room temperature. Aerogels obtained after supercritical drying have BET surface areas of 636 m2/g and 505 m2/g for KFeSbS3 and NaFeAsS3, respectively, with pore sizes in the micro- (below 2 nm), meso- (2-50 nm), and macro- (above 50 nm) regions.
Bibliographical noteKAUST Repository Item: Exported on 2020-10-01
Acknowledgements: Electron microscope imaging work (TEM, SEM) was performed in the Advanced Nanofabrication, Imaging and Characterization Core Lab at KAUST. This research was supported by King Abdullah University of Science and Technology (KAUST) baseline funding.
ASJC Scopus subject areas
- Materials Chemistry
- Chemical Engineering(all)