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- 저자 : Shakiba Ghohyei (검색결과 1 건)
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Abdolreza Moghadassi,Shakiba Ghohyei,Samaneh Bandehali,Morteza Habibi,Maryam Eskandari 한국화학공학회 2023 Korean Journal of Chemical Engineering Vol.40 No.3
Cuprous oxide nanoparticles (Cu2O) were synthesized by electrochemical method and as an add-on toconstruct polyethersulfone (PES) nanofiltration (NF) membranes. Field emission scanning electron microscopy (FESEM),3D surface images, X-ray diffraction (XRD) analysis, and Fourier transform infrared (FTIR) spectroscopy were utilizedto indicate membranes and nanoparticles. Membranes were evaluated by tests of water content, porosity, contact angle,salt rejection, water flux and average pore size measurements. The results show the enhancement of surface hydrophilicityby the addition of Cu2O nanoparticles. The highest unalloyed water flux was obtained by membrane, including0.05 wt% Cu2O nanoparticles, and the highest rejection was revealed by a membrane containing 2 wt% Cu2Onanoparticles. The Na2SO4 rejection reached 66.94%, which was significantly higher than the bare PES membrane. Thisperformance may be owing to increased Na2SO4 adsorption sites. The heavy metals rejection of CrSO4, Pb(NO3)2, andCu (NO3)2 increased 79.38%, 85.08%, and 81% for the M5 membrane, respectively, while it was 45%, 46%, and 49% forbare membrane, respectively. Furthermore, the flux of unalloyed water increased from 9.78 L/m2·h on the pure PESmembrane to 36.78 L/m2·h on the M1 membrane. The decrease of surface roughness and also the increase of hydrophilicgroups improved the antifouling properties of the membranes.
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