LAUSR

Metal-organic framework (MOF) represents a new class of organic-inorganic hybrid microporous crystalline material. Owing to their high surface areas, tunable pore aperture, and rich functional groups, MOF materials have shown great promise in gas storage, adsorption, and separation. High-valence MOF materials constructed by highly connected metal-oxo cluster nodes and organic linkers possess rigid and stable framework structures that lead to superior chemical, thermal, and mechanical stability. Recent studies indicated that compared with common metal sources, the use of metal-oxo cluster source was beneficial for the formation of high-valence MOF membranes with superior separation performance under milder reaction conditions. In this review article, we summarized major progress made in synthesizing high-valence MOF powders and membranes with metal-oxo clusters as metal sources. Of particular note, recent breakthrough on the preparation of Zr-/Ti-based MOF membranes with metal-oxo cluster sources was highlighted.