Surface zwitterionic functionalized graphene oxide for a novel loose nanofiltration membrane

Zhu, Junyong; Tian, Miaomiao; Hou, Jingwei; Wang, Jing; Lin, Jiuyang; Zhang, Yatao; Liu, Jindun; Bruggen, Bart Van der

doi:10.1039/c5ta08024j

Cited by 335 publications

(126 citation statements)

References 57 publications

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“…Mixed matrix membranes (MMMs), also called as organic‐inorganic hybrid membranes which combine the good film‐forming property of polymers with the superior gas separation performance of inorganic materials, have been widely studied as an alternative approach to break through the trade‐off phenomena of polymeric membranes in water treatment as well as gas separation . At present, zeolites, carbon nanotubes, metal oxide nanotubes, and graphene oxide (GO) are emerging as attractive candidates for the preparation and application of MMMs . The results have demonstrated that the incorporation of these nanocarbon materials could improve the gas transport properties compared with the pure polymer.…”

Section: Introductionmentioning

confidence: 99%

Preparation of mixed matrix membranes based on polyimide and aminated graphene oxide for CO₂ separation

Wang

Sun

et al. 2018

Polymers for Advanced Techs

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The aminated graphene oxide (GO) was prepared by the functionalization of pristine GO with ethylenediamine and then dispersed into the poly(amic acid) (the precursor of polyimide [PI]) solution followed by the chemical imidization to successfully fabricate the PI/amine‐functionalized GO mixed matrix membranes (MMMs) using in‐situ polymerization method. Chemical structure and morphology of the GO before and after amine modification were characterized by scanning electron microscopy, Raman spectrum, Fourier transform infrared, and X‐ray photoelectron spectroscopy. Scanning electron microscopy indicated that fine dispersion of GO throughout PI matrix was achieved, which indicates that the in‐situ polymerization approach can enhance the interfacial interaction between the GO and the PI matrix, and then improve the dispersion of carbon material in the polymer matrix. Compared with the conventional solution mixture method, the MMMs prepared with in‐situ polymerization method showed excellent CO2 permeability and CO2/N2 selectivity. The MMMs doped with 3 wt.% aminated GO exhibited maximum gas separation performance with a CO2 permeability of 12.34 Barrer and a CO2/N2 selectivity of 38.56. These results suggest that the amino groups on GO have strong interaction with the CO2 molecules, which can significantly increase the solubility of polar gas. Our results provide an easy and efficient way to prepare MMMs with good mechanical behavior and excellent gas separation performance.

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Section: Introductionmentioning

confidence: 99%

Preparation of mixed matrix membranes based on polyimide and aminated graphene oxide for CO₂ separation

Wang

Sun

et al. 2018

Polymers for Advanced Techs

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“…1 In this direction, the membrane-based separation technology like reverse osmosis (RO) has been recognized as a promising alternative for seawater desalination due to their lower energy consumption. [2][3][4] However, the present membranes used for seawater desalination are mainly polymeric membranes, which usually suffer from biofouling, metal oxide fouling, abrasion and mineral scaling, thus resulting in low stability and low rejection. 5,6 In comparison with organic polymer membranes, the inorganic membranes are more stable under harsh separation condition.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of graphene oxide/polyimide mixed matrix membranes for desalination

Feng

Huang

2017

RSC Adv.

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Nanohybrid graphene oxide (GO)/polyimide (PI) mixed matrix membranes (MMMs) were prepared by dispersing GO into PI through wet phase inversion method. The structure of GO/PI MMMs was characterized by using XRD, FT-IR and XPS. FESEM was used to analyze the morphology of the GO/PI MMMs. The hydrophilicity of the GO/PI MMMs was determined by static water contact angles. The performances of the GO/PI MMMs were evaluated for desalination of seawater through pervaporation.The GO/PI MMMs display excellent water permeability and salt rejection for desalination of different concentrations of seawater. At 90 C, the GO/PI MMMs exhibit a high water flux (36.1 kg m À2 h À1) and a high salt rejection (99.9%). Further, the GO/PI MMM displays a high stability for seawater desalination.This high separation performance combined with high stability and facile fabrication route recommend the developed GO/PI MMMs as a promising candidate for desalination of seawater.

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“…The GO nanosheets were immobilized on the surface, and again increase in negative charge was seen with rejections of >97% for Na 2 SO 4 and >60% for NaCl, with fluxes of >20 LMH [48]. Loose NF membranes with zwitterionic GO grafted with poly(sulfobetaine methacrylate) brushes (GO-PSBMA) were prepared by phase inversion of mixtures of GO-PSBMA and PES [49]. The zwitterionic nature of the membranes allowed for reduction in fouling potential, and the loose nature of the membranes allowed retention of dyes but permeation of salts [50].…”

Section: Carbon Nanosheet Membranes For Desalinationmentioning

confidence: 99%

Incorporation of Graphene-Related Carbon Nanosheets in Membrane Fabrication for Water Treatment: A Review

Lawler

2016

Membranes

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The minimization of the trade-off between the flux and the selectivity of membranes is a key area that researchers are continually working to optimise, particularly in the area of fabrication of novel membranes. Flux versus selectivity issues apply in many industrial applications of membranes, for example the unwanted diffusion of methanol in fuel cells, retention of valuable proteins in downstream processing of biopharmaceuticals, rejection of organic matter and micro-organisms in water treatment, or salt permeation in desalination. The incorporation of nanosheets within membrane structures can potentially lead to enhancements in such properties as the antifouling ability, hydrophilicy and permeability of membranes, with concomitant improvements in the flux/selectivity balance. Graphene nanosheets and derivatives such as graphene oxide and reduced graphene oxide have been investigated for this purpose, for example inclusion of nanosheets within the active layer of Reverse Osmosis or Nanofiltration membranes or the blending of nanosheets as fillers within Ultrafiltration membranes. This review summarizes the incorporation of graphene derivatives into polymeric membranes for water treatment with a focus on a number of industrial applications, including desalination and pharmaceutical removal, where enhancement of productivity and reduction in fouling characteristics have been afforded by appropriate incorporation of graphene derived nanosheets during membrane fabrication.

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Surface zwitterionic functionalized graphene oxide for a novel loose nanofiltration membrane

Abstract: Surface zwitterionization of graphene oxide (GO) was firstly conducted by grafting poly(sulfobetaine methacrylate) (PSBMA) onto the GO surface via reverse atom transfer radical polymerization (RATRP).

Cited by 335 publications

References 57 publications

Preparation of mixed matrix membranes based on polyimide and aminated graphene oxide for CO₂ separation

Preparation of mixed matrix membranes based on polyimide and aminated graphene oxide for CO₂ separation

Synthesis of graphene oxide/polyimide mixed matrix membranes for desalination

Incorporation of Graphene-Related Carbon Nanosheets in Membrane Fabrication for Water Treatment: A Review

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Surface zwitterionic functionalized graphene oxide for a novel loose nanofiltration membrane

Abstract: Surface zwitterionization of graphene oxide (GO) was firstly conducted by grafting poly(sulfobetaine methacrylate) (PSBMA) onto the GO surface via reverse atom transfer radical polymerization (RATRP).

Cited by 335 publications

References 57 publications

Preparation of mixed matrix membranes based on polyimide and aminated graphene oxide for CO2 separation

Preparation of mixed matrix membranes based on polyimide and aminated graphene oxide for CO2 separation

Synthesis of graphene oxide/polyimide mixed matrix membranes for desalination

Incorporation of Graphene-Related Carbon Nanosheets in Membrane Fabrication for Water Treatment: A Review

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Preparation of mixed matrix membranes based on polyimide and aminated graphene oxide for CO₂ separation

Preparation of mixed matrix membranes based on polyimide and aminated graphene oxide for CO₂ separation