ZIF-8 coated polyvinylidenefluoride (PVDF) hollow fiber for highly efficient separation of small dye molecules

•Dense ZIF-8 membranes on PVDF hollow fiber were prepared at room temperature.•A gelatin layer provide a good substrate for seeds growth on PVDF.•The prepared ZIF-8 hollow fiber membrane exhibits excellent small molecular separation.•This MOFs/hollow fiber membrane module holds potential for dye-wasted water treatment.