Application of graphene oxide membranes for removal of natural organic matter from water

You, Yi; Jin, Xingzhong; Wen, Xinyue; Sahajwalla, Veena; Chen, V.; Bustamante, Heriberto; Joshi, Rakesh

doi:10.1016/j.carbon.2017.12.032

Cited by 90 publications

(30 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, such impermeable coatings on 3D metal parts are expected to have the ultimate These closed ultrathin membranes (or coating) can be used for high performance molecular sieving purposes, in which the membrane allows small molecules such as H 2 and H 2 O to pass [40,41], while remaining impermeable to larger molecules such as CH 4 , ethanol [42] and ions (Na + , Cl − , Mg 2+ , Ca 2+ , etc.) [43].…”

Section: Discussionmentioning

confidence: 99%

Large Area Graphene Deposition on Hydrophobic Surfaces, Flexible Textiles, Glass Fibers and 3D Structures

et al. 2019

View full text Add to dashboard Cite

Graphene and its derivatives have many superior electrical, thermal, mechanical, chemical, and structural properties, and promise for many applications. One of the issues for scalable applications is the lack of a simple, reliable method that allows the deposit of a well-ordered monolayer using low-cost graphene flakes onto target substrates with different surface properties. Another issue is the adhesion of the deposited graphene thin film, which has not been well investigated yet. Following our former finding of a double self-assembly (DSA) process for efficient deposition of a monolayer of graphene flakes (MGFs), in this work we demonstrate that the DSA process can be applied even on very challenging samples including highly hydrophobic polytetrafluoroethylene (PTFE), flexible textiles, complex 3D objects, and thin glass fibers. Additionally, we tested adhesion of the graphene flakes on the flat glass substrate by scotch tape peel test of the MGFs. The results show that the graphene flakes adhere quite well on the flat glass substrate and most of the graphene flakes stay on the glass. These findings may trigger many large-scale applications of low-cost graphene feedstocks and other 2D materials.

show abstract

Section: Discussionmentioning

confidence: 99%

Large Area Graphene Deposition on Hydrophobic Surfaces, Flexible Textiles, Glass Fibers and 3D Structures

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Recently, graphene oxide (GO) has become a promising membrane material owing to its impressive separation performance [22][23][24][25]. GO membranes possess ultrafast water transport properties and extraordinary water adsorption characteristics [26,27].…”

Section: Introductionmentioning

confidence: 99%

Graphene oxide quantum dots embedded polysulfone membranes with enhanced hydrophilicity, permeability and antifouling performance

Zhao

et al. 2019

Sci. China Mater.

View full text Add to dashboard Cite

Graphene oxide (GO) has been demonstrated to be an effective hydrophilic nanofiller to modify the polymeric membranes when forming a mixed matrix structure. GO quantum dots (QDs) are promising candidates to fully exert the rich oxygen containing functional groups due to their unique size induced edge effects. In this work, GO QDs modified polysulfone (PSF) ultrafiltration (UF) membranes were prepared by phase inversion method with various GO QDs loadings (0.1-0.5 wt.%). A proper amount of GO QDs addition led to a more porous and hydrophilic membrane structure. With 0.3 wt.% GO QDs, the membranes showed a 60% increase in permeability (130.54 vs. 82.52 LMH bar -1 ).The pristine PSF membranes had a complete cutoff of bovine serum albumin molecules and it was well maintained with GO QDs incorporated. The membranes with 0.5 wt.% GO QDs exhibited the highest flux recovery ratio of 89.7% and the lowest irreversible fouling of 10.3% (54.5% and 33.3% for the pristine PSF membranes). Our results proved that GO QDs can function as effective nanofillers to enhance the hydrophilicity, permeability and antifouling performance of PSF UF membranes.

show abstract

“…Moreover, they explained that GO membranes would absorb CO 2 because of the attraction force between CO 2 and carboxyl or hydroxyl on r-GO akes, which has also been reported by other research. 52,54,119,157 The results from Kim are demonstrated in Fig. 9(a).…”

mentioning

confidence: 99%

Separation and purification using GO and r-GO membranes

et al. 2018

Self Cite

View full text Add to dashboard Cite

Many materials with varied characteristics have been used for water purification and separation applications. Recently discovered graphene oxide (GO), a two-dimensional derivative of graphene has been considered as a promising membrane material for water purification due to its excellent hydrophilicity, high water permeability, and excellent ionic/molecular separation properties. This review is focussed on the possible versatile applicability of GO membranes. It is also known that selective reduction of GO results in membranes with a pore size of $0.35 nm, ideally suited for desalination applications. This article presents the applicability of graphene-based membranes for multiple separation applications. This is indeed the first review article outlining a comparison of GO and r-GO membranes and discussing the suitability for applications based on the porosity of the membranes.

show abstract

Application of graphene oxide membranes for removal of natural organic matter from water

Cited by 90 publications

References 28 publications

Large Area Graphene Deposition on Hydrophobic Surfaces, Flexible Textiles, Glass Fibers and 3D Structures

Large Area Graphene Deposition on Hydrophobic Surfaces, Flexible Textiles, Glass Fibers and 3D Structures

Graphene oxide quantum dots embedded polysulfone membranes with enhanced hydrophilicity, permeability and antifouling performance

Separation and purification using GO and r-GO membranes

Contact Info

Product

Resources

About