Microwave‐Assisted Hydrothermal Synthesis of [Al(OH)(1,4‐NDC)] Membranes with Superior Separation Performances

• Published in: Chemistry, an Asian journal Vol. 14; no. 12; pp. 2072 - 2076
• Main Authors: Liu, Yi, Hori, Akihiro, Kusaka, Shinpei, Hosono, Nobuhiko, Li, Mingrun, Guo, Ang, Du, Dongying, Li, Yanshuo, Yang, Weishen, Ma, Yunsheng, Matsuda, Ryotaro
• Format: Journal Article
• Language: English
• Published: Germany Wiley Subscription Services, Inc 14.06.2019
• Subjects: Aluminum oxide; Chemistry; gas separation; Heating; hydrothermal growth; membrane; Membranes; Metal-organic frameworks; microwave heating; Nanorods; Selectivity; Separation; Substrates; microwave heating; membrane; gas separation; hydrothermal growth; metal-organic frameworks
• ISSN: 1861-4728; 1861-471X
• DOI: 10.1002/asia.201900152

In this study, we report a facile ligand‐assisted in situ hydrothermal approach for preparation of compact [Al(OH)(1,4‐NDC)] (1,4‐NDC=1,4‐naphthalenedicarboxylate) MOF membranes on porous γ‐Al2O3 substrates, which also served as the Al3+ source of MOF membranes. Simultaneously, it was observed that the heating mode exerted significant influence on the final microstructure and separation performance of [Al(OH)(1,4‐NDC)] membranes. Compared with the conventional hydrothermal method, the employment of microwave heating led to the formation of [Al(OH)(1,4‐NDC)] membranes composed of closely packed nanorods with superior H2/CH4 selectivity. The power of microwave irradiation: [Al(OH)(1,4‐napthalenedicarboxylate)] ([Al(OH)(1,4‐NDC)]) MOF membranes were in situ hydrothermally grown on porous γ‐Al2O3 substrates, which also served as the Al3+ source. Microwave irradiation was found to exert significant influence on both microstructures and separation performances of prepared [Al(OH)(1,4‐NDC)] membranes.