Abstract
Contra-diffusion synthesis method was used to create a uniform layer of zeolitic imidazolate framework-8 (ZIF-8) on the porous polyvinylidene fluoride (PVDF) ultrafiltration membranes. SEM, FTIR, EDX, AFM and water contact angle analyses were used to characterize the prepared membranes. The modified membrane with 5h contra-diffusion synthesis time showed maximum pure water flux of 134L/m2h nearly twice of that of the bare PVDF membrane (65.8L/m2h). The water purification performance of the prepared membranes was evaluated using dye removal efficiency and the ZIF-8 modified membranes exhibited better performance for dye removal due of the negatively charged surface.
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