Facile Synthesis of Hierarchical Micro‐mesoporous HKUST‐1 Using Organic Silane Surfactant as a Novel Template. Issue 7 (15th February 2019)

• Record Type: Journal Article
• Authors: Li, Feier; Zheng, Ke; Zheng, Xiang; Zheng, Liming; Duan, Chongxiong; Xi, Hongxia
• Is Part Of: ChemistrySelect. Volume 4:Issue 7(2019)
• Page Start: 2079
• Page End: 2083
• Publication Date: 2019-02-15
• Subjects: Mesoporous metal−organic frameworks -- Template strategy -- Tunable porosity; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.201803971
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: Hierarchically porous HKUST‐1 has been successfully fabricated by using organic silane (3‐Aminopropyltrimethoxysilane, γ‐APS) as template under hydrothermal conditions. The amount of template affected on the porosity and morphology of the as‐synthesized samples, indicating the adjustable pore structure. The density functional theory (DFT) calculation was employed to investigate the synthetic mechanism, demonstrating that the amino group in γ‐APS may play an electrophilic role thus the MOFs could construct under the direction of template γ‐APS. The hierarchically porous structure of the as‐synthesized MOFs will improve the mass transfer efficiency compared to the conventional MOFs, demonstrating great significance for the development of MOFs. Abstract : The γ‐APS molecules first tend to and dehydration condensation, and then self‐assemble into molecular clusters. Thus the hydrophilic ‐NH2 groups were exposed on the surface of the clusters and coordinated with Cu 2+ . Then the H3 BTC molecule reacted with the Cu 2+ on the clusters surface to form the microporous HKUST‐1 crystal. The mesopores were obtained after removing the template agents by solvent method and the hierarchically porous MOFs were finally constructed.