Hybrid organic-inorganic membranes have attracted much attention recently because they possess both advantages of the organic and inorganic membranes. Hybrid organic-inorganic membranes are being classified into two categories according to the links between the organic and inorganic components. This article especially concentrates on the hybrid organic-inorganic separation membranes with chemical bonds between components. The main properties of this kind of hybrid membranes are briefly discussed

and the important influence factors on the morphology and characteristics are illustrated

as well as the application in the separation process is introduced. Finally

a brief comment on their development was given.