Highly selective micro-porous ZIF-8 membranes prepared by rapid electrospray deposition

Highly selective ZIF-8 membranes were successfully prepared by electrospray deposition for H2/CO2 separation. This novel method produced ZIF-8 membranes in a facile and time-efficient manner using an electrostatic force-assisted coating approach. In addition, the membrane thickness could be controlled easily by simply varying the deposition time. Results from the experiment indicate that the membrane performed preeminently in comparison with previously reported glassy and polymeric membranes for H2/CO2 separation. The H2 permeance of the ZIF-8 membrane prepared at 70 °C for 55.71 min was 4.23 × 10−7 mol m−2 s−1 Pa−1 with H2/CO2 selectivity of 20.3.