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首页> 外文期刊>Separation and Purification Technology >New mixed matrix PEI nanofiltration membrane decorated by glycidyl-POSS functionalized graphene oxide nanoplates with enhanced separation and antifouling behaviour: Heavy metal ions removal
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New mixed matrix PEI nanofiltration membrane decorated by glycidyl-POSS functionalized graphene oxide nanoplates with enhanced separation and antifouling behaviour: Heavy metal ions removal

机译：新的混合基质PEI纳滤膜通过缩水甘油基 - 足官能化的石墨烯氧化物纳米层，具有增强的分离和防污性能：重金属离子去除

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Surface functionalization of graphene oxide (GO) nanoplates was performed by glycidyl polyhedral oligosilsesquioxane (POSS), and was used to fabrication of polyetherimide (PEI) based nanofiltration membranes by phase inversion method. The prepared membranes characterized by Field emission scanning electron microscopy (FESEM), Fourier transform infrared spectroscopy (FTIR), X-ray spectrometry (EDX) and atomic force microscopy (AFM) analysis. The effect of different concentrations of glycidyl POSS-GO (PG) in membrane matrix on separation performance and antifouling property of blended membranes was investigated by contact angle measurement, pure water flux, Na2SO4, Pb(NO3)(2), CrSO4 and Cu(NO3)(2) rejection and flux recovery ratio. The blended PEI/PG membranes showed significant separation performance and antifouling properties compared with neat PEI and PEI/GO membranes. The highest pure water flux measured 74.77 (L/m(2).h) for the blended membrane with 0.001 wt% of PG whereas it was 51.06 (L/m(2).h) for the PEI/GO membrane and 17.63 (L/m(2).h) for pristine membrane at 4.5 bar pressure. The blended PEI/PG membranes showed outstanding Na2SO4 and Pb (NO3)(2), CrSO4, and Cu(NO3)(2) rejection compared to blended PEI/GO membranes and neat PEI ones. Furthermore, the highest flux recover ratio (FRR) value was obtained (96%) for the blended [PEI/0.1 %wt PG] membrane whereas FRR was (40%) for PEI/GO and (33%) for the neat PEI membranes.
机译：石墨烯氧化物（GO）纳米板的表面官能化通过缩水甘油泛多骨寡核苷酸（POSS）进行，并用相转化法制造基于聚醚酰亚胺（PEI）的纳米滤膜。所制备的膜以现场发射扫描电子显微镜（FESEM），傅里叶变换红外光谱（FTIR），X射线光谱法（EDX）和原子力显微镜（AFM）分析。通过接触角测量，纯净水通量，Na2SO4，Pb（NO 3），CRSO4和Cr（NO 3），CRSO4和Cr（ NO3）（2）抑制和助焊剂回收率。与整齐的PEI和PEI / GO膜相比，混合的PEI / PG膜显示出显着的分离性能和防污性能。对于PEI / GO膜的0.001wt％的混合膜，测量混合膜的最高纯水通量为74.77（L / m（2）.h），而PEI / GO膜为51.06（L / M（2）.h）和17.63（ L / m（2）.h）在4.5巴压下原始膜。与混合的PEI / GO膜和整齐的PEI膜相比，混合的PEI / PG膜显示出优异的Na2SO4和Pb（NO 3），CRSO4和Cu（2）（2）抑制剂。此外，对于混合的[PEI / 0.1％wt pg]膜获得（96％）的最高助焊量（FRR）值，而PEI / GO和（33％）用于整齐PEI膜的FRR（40％） 。

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