In the present study, a simple method for the synthesis of the ZIF-8 membrane has been proposed. This method involves growing the ZIF-8 layer onto the external surface of the ZnO porous hollow support, with inner and outer diameters of 1.55 mm and 2.06 mm, respectively. The ZnO hollow fibers with a thin spongy layer and large numbers of finger-like pores were prepared by a phase inversion/sintering technique. These ZnO hollow fibers have proved to be effective supports for the preparation of highly stable and reproducible ZIF-8 membranes. The ZnO support helps in seeding the ZIF-8 membrane formation and then serves as a connecting bridge to link the support with the membrane. The excellent binding strength between ZIF-8 and the support is responsible for the superior mechanical and thermal stabilities of the ZIF-8 membranes. These membranes exhibited great hydrogen permeation (1.2 x 10(-6) mol.m(-2).s(-1).Pa-1) and attained the ideal separation factors for H-2/CO2, H-2/N-2, and H-2/CH4 at 7.0, 4.3, and 3.7, respectively, demonstrating good molecular sieve performance. These ZIF-8 membranes displayed preferential adsorption of CO2 and can be potentially applied in CO2 capture from industrial mixed gases. This method requires neither high smoothness of the support surface nor modification of the support, thus providing a simple and comparable technique for the preparation of tubular ZIF and additional MOF membranes.