Cross-linking modification with diamine monomers to enhance desalination performance of graphene oxide membranes

Qian, Yunlong; Zhou, Chen; Huang, Aisheng

doi:10.1016/j.carbon.2018.04.062

Cited by 102 publications

(43 citation statements)

References 60 publications

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“…For the spectrum of c-GO-PEI, characteristic peaks of N − H can be seen at 1586 cm −1 , and C − H can be seen at 2842 and 2963 cm −1 , confirming the existence of PEI and the formation of cross-linking structure in the membrane. (Guo et al 2021;Halakoo and Feng 2020;Qian et al 2018) In XPS N1s spectrum (Fig. 3b), the fitted peaks represent C − N at 399.0 eV, N − C = O at 400.1 eV and tertiary N at 401.3 eV, which confirms the successful intercalation of PEI in the GO membrane.…”

Section: Characterizationmentioning

confidence: 70%

“…However, pure GO membranes are prone to swell and collapse in water condition. To strengthen the structural stability of GO membranes, a large amount of cross-linking agents were applied, including polymers (Chen et al 2014;Cheng et al 2017;Pan, 2020;Park et al 2009;Suri et al 2019;Tian et al 2013), small molecules (An et al 2011;Feng et al 2016;Hung, 2014;Jia et al 2016;Liu et al 2020;Qian et al 2018;Wang, 2016b;Zhang et al 2020Zhang et al , 2015, ions (Chen, 2017;Gao et al 2019;Lin and Chen 2021;Park et al 2008;Yu et al 2017) and nano materials (Cho, 2019;Dong et al 2020;Shi, 2019;Xi et al 2016). Polyethylenimine (PEI) is a kind of hydrophilic and flexible polymer, and abundant amino group endows PEI molecules with positive charge.…”

Section: Introductionmentioning

confidence: 99%

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Laminated graphene oxide membrane for recovery of mercury-containing wastewater by pervaporation

Wang

Qin

et al. 2021

Appl Water Sci

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Mercury (Hg) is a toxic heavy metal contaminant and has very harmful effects for human health. In this work, Hg-containing wastewater with Hg concentration of 6.36 ppb and 9.4 ppb were recovered with polyethylenimine (PEI) cross-linked graphene oxide (GO) layered membrane (c-GO-PEI) by pervaporation. The influence of ionic type, the concentration of Hg and the feed temperature were investigated. The c-GO-PEI exhibited not only high rejection for salts (> 99.97%), Hg (77.5–100%) and non-purgeable organic carbon (NPOC) (67.3–90.8%) but also high flux (30.30 kg·m−2·h−1) to treat with the wastewater. In addition, the flux could be largely recovered after simple washing, indicating the excellent antifouling property of the membrane.

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Section: Characterizationmentioning

confidence: 70%

Section: Introductionmentioning

confidence: 99%

Laminated graphene oxide membrane for recovery of mercury-containing wastewater by pervaporation

Wang

Qin

et al. 2021

Appl Water Sci

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“…Attributing to multi-functional surface chemistry and high stability as well as simple preparation processes, graphene oxide (GO) membranes have attracted intense interest for gas separation, seawater desalination and water treatment [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30]. Further, since there are a lot of functional groups in GO framework, such as hydroxyl, carboxyl, carbonyl and epoxide groups [15], GO is easy to be modified and intercalated by aliphatic amines [16,17], amino acids [18], and isocyanates [19], resulting in the formation of a controllable spacing size between GO nanosheets [27,28].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Graphene Oxide Membrane for Separation of p‐Xylene and o‐Xylene by Pervaporation

Guo

Zheng

et al. 2021

Chemie Ingenieur Technik

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Dedicated to Prof. Dr. rer. nat. Ju ¨rgen Caro on the occasion of his 70th birthdayIn this study, a graphene oxide (GO) membrane is developed for the separation of p-xylene (PX, 0.58 nm) from o-xylene (OX, 0.68 nm). Attributing to the suitable d-spacing size (0.58 nm), the GO membrane allows more PX to pass through than OX, leading to a high PX/OX selectivity. At 110 °C for the separation of equimolar PX/OX mixture, the PX/OX separation factor is 9.4 and PX flux is 145.3 g m -2 h -1 , respectively, which is promising for the separation of xylene isomers by pervaporation. The separation performance of the GO membrane is further confirmed by simulation studies.

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“…The graphene oxide framework that built by use of 1,4cyclohyxanediamine (CDA) and p-phenylenediamine (pPDA), was introduced by Qian and et al in 2018 and exposed in the field of modified graphene oxide. The synthesized composition was used in the alumina membrane, which showed great results, that can be mention to high flux (20.1 kg/m 2 .h) and high ionic rejection (99.9%) (Qian et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Color Removal from Wastewater using a Synthetic High Performance Antifouling GO-CPTMS@Pd-TKHPP/Polyether Sulfone Nanofiltration Membrane

Gholami

Zinadini

Kamrani

et al. 2021

Preprint

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Modified graphene oxide with 5,10,15,20-tetrakis‐(4‐hexyloxyphenyl) ‐porphyrin and palladium (II) (signified by GO-CPTMS@Pd-TKHPP) prepared as a novel antifouling polyether sulfone (PES) blended nanofiller membrane. The membrane efficiency has been analyzed such as pure water flux (PWF), hydrophilicity and antifouling features. By increasing of modified graphene oxide percentage from 0 to 0.1 wt.% in polymer matrix the PWF was incremented from 14.35 to 37.33 kg/m2.h at 4bar. The membrane flux recovery ratio (FRR) has been investigated by applying powdered milk solution, the FRR results indicated that the 0.1 wt.% modified graphene oxide membrane showed the positive effect on fouling behavior with Rir and FRR value 8.24 and 91.73% respectively. The nanofiltration membrane performance was assessed applying the Direct Red 16 dye rejection. It was demonstrated that the optimal membranes (0.1 wt.% modified graphene oxide) had notable dye removal (99.58 % rejection). The results are also verified by measuring the scanning electron microscopy (SEM), water contact angle (WCA) and atomic microscopy analysis (AFM).

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Cross-linking modification with diamine monomers to enhance desalination performance of graphene oxide membranes

Cited by 102 publications

References 60 publications

Laminated graphene oxide membrane for recovery of mercury-containing wastewater by pervaporation

Laminated graphene oxide membrane for recovery of mercury-containing wastewater by pervaporation

Synthesis of Graphene Oxide Membrane for Separation of p‐Xylene and o‐Xylene by Pervaporation

Color Removal from Wastewater using a Synthetic High Performance Antifouling GO-CPTMS@Pd-TKHPP/Polyether Sulfone Nanofiltration Membrane

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