Synthesis of graphene oxide/polyethyleneimine sponge and its performance in the sustainable removal of Cu(II) from water

Kuang, Yue; Zhang, Zhiyong; Wu, Deyi

doi:10.1016/j.scitotenv.2021.151258

Cited by 32 publications

(20 citation statements)

References 45 publications

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“…These activated function groups consider as available negative active site that can form a complex with the cationic pollutants. In order to improve the adsorption efficiency of GO, numerous studies were investigated to liable GO in another constructures such as; graphene oxide (GO), sodium alginate (SA) and hydroxyethyl cellulose (HEC) (SA-HEC/GO bio-adsorbent hydrogel beads 8 , graphene oxide/hollow mesoporous silica (GO–HMS) composite 9 , sodium alginate/gelatin/graphene oxide (SGGO) nanocomposite 10 , polyaniline/graphene oxide (PANI/GO) nanocomposite 11 , graphene oxide-chitosan-EDTA (GO–EDTA–CS) nanocomposite 12 , polyethyleneimine (PEI) modified (GO) to form (GO/PEI) sponge 13 , decoration of GO with zinc oxide nanoparticles (ZnO) (GO/ZnO) 14 , graphene oxide (GO) modified with isocyanate (MDI), subsequently, (EDTA) (EDTA/MDI/GO) composite 15 , modification of graphene oxide (GO) nanosheets with magnetic particles of nickel ferrite (NiFe 2 O 4 ) and followed by immobilizing glutathione (GSH) to fabrication of GSH-NiFe 2 O 4 /GO nanocomposite 16 and Amino-modified graphene oxide (GONH 2 ) 17 . Most of previous studies required expensive chemical, multi-preparation steps, low adsorption capacities, delayed equilibrium period, see Table 1 .…”

Section: Introductionmentioning

confidence: 99%

Superior adsorption performance of citrate modified graphene oxide as nano material for removal organic and inorganic pollutants from aqueous solution

Abd-Elhamid

Elgoud

Emam

et al. 2022

Sci Rep

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This work addressed one step preparation method to form a novel nano material composite of graphene oxide nanosheet (GO) functionalized with low-cost tri-sodium citrate (C), using, teteraethylorthosilicate (TEOS) as a cross-linker. The prepared composite (GO–C) was characterized using various advanced techniques. Among these techniques, the TGA provided interesting information concerning the functionalization process. Within this process, the (–OH) groups that located at the GO-surface were consumed in the modification process which leads to increase the thermal stability of the resulted composite. Cationic organic methylene blue (MB) and crystal violet (CV), and inorganic copper (Cu2+) and cobalt (Co2+) pollutants were displayed as a model to assess their removal performance by the developed composite (GO–C) from aqueous solution, through batch technique. According to Langmuir isotherm the GO–C present an excellent adsorption capacity for MB (222.22 mg g−1), CV (270.27 mg g−1), Cu2+ (163.4 mg g−1) and Co2+ (145.35 mg g−1) which were more than the adsorption capacities found in literature. Additionally, the regenerated composite presents higher removal ability than the original composite.

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Section: Introductionmentioning

confidence: 99%

Superior adsorption performance of citrate modified graphene oxide as nano material for removal organic and inorganic pollutants from aqueous solution

Abd-Elhamid

Elgoud

Emam

et al. 2022

Sci Rep

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“…To obtain a 3D porous structure and to improve the biological activity of GO, the scaffolds have been prepared by step-wise covalent growth of multilayer architectures of GO sheets alternated by linear polyethylenimine (PEI) macromolecules, the latter acting as linkers and spacers. Cross-linking between GO and PEI has been previously reported to form structurally defined foams with controlled porosity, , adsorbing sponge materials, and GO framework membranes for ion-selective separations . Here, we used for the first time such a cross-link synthetic procedure at interfaces by means of the covalent layer-by-layer (LbL) technique to generate controlled 3D architectures.…”

Section: Introductionmentioning

confidence: 99%

3D Graphene Oxide-Polyethylenimine Scaffolds for Cardiac Tissue Engineering

Pilato

Moffa

Siani

et al. 2023

ACS Appl. Mater. Interfaces

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The development of novel three-dimensional (3D) nanomaterials combining high biocompatibility, precise mechanical characteristics, electrical conductivity, and controlled pore size to enable cell and nutrient permeation is highly sought after for cardiac tissue engineering applications including repair of damaged heart tissues following myocardial infarction and heart failure. Such unique characteristics can collectively be found in hybrid, highly porous tridimensional scaffolds based on chemically functionalized graphene oxide (GO). By exploiting the rich reactivity of the GO's basal epoxydic and edge carboxylate moieties when interacting, respectively, with NH 2 and NH 3 + groups of linear polyethylenimines (PEIs), 3D architectures with variable thickness and porosity can be manufactured, making use of the layer-by-layer technique through the subsequent dipping in GO and PEI aqueous solutions, thereby attaining enhanced compositional and structural control. The elasticity modulus of the hybrid material is found to depend on scaffold's thickness, with the lowest value of 13 GPa obtained in samples containing the highest number of alternating layers. Thanks to the amino-rich composition of the hybrid and the established biocompatibility of GO, the scaffolds do not exhibit cytotoxicity; they promote cardiac muscle HL-1 cell adhesion and growth without interfering with the cell morphology and increasing cardiac markers such as Connexin-43 and Nkx 2.5. Our novel strategy for scaffold preparation thus overcomes the drawbacks associated with the limited processability of pristine graphene and low GO conductivity, and it enables the production of biocompatible 3D GO scaffolds covalently functionalized with amino-based spacers, which is advantageous for cardiac tissue engineering applications. In particular, they displayed a significant increase in the number of gap junctions compared to HL-1 cultured on CTRL substrates, which render them key components for repairing damaged heart tissues as well as being used for 3D in vitro cardiac modeling investigations.

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“…While any amine-rich polymer, such as chitosan − and polyallylamine, can be considered as an effective component for copper-binding materials, branched polyethylenimine (PEI) possesses an exceptional copper-binding selectivity and capacity. , Although, as in all amines, the copper-binding capacity of PEI decreases with decreasing pH, it still remains significant down to pH ∼3 with exceptional selectivity for copper, in contrast to simple aliphatic amines, such as ethylenediamine, which hardly interacts with copper at pH ≤ 3. , The polymer itself remains stable even under very acidic conditions, allowing simple recovery of bound copper without use of any competing chelators. ,,, A number of highly efficient PEI-based composites have been developed for copper extraction from acidic solutions, including mining wastewaters. Just to name a few, PEI-modified montmorillonite, cross-linked PEI-diatomaceous earth particles, glutaraldehyde-PEI particulate resin, PEI-modified magnetic graphene oxide nanocomposites and graphene oxide/PEI sponges were all shown to repeatedly bind copper from acidic aqueous solutions, followed by full copper recovery via washing the copper-loaded materials at pH ∼1. However, the majority of PEI-based composites were designed and tested for application in aqueous solutions only, which restricts their use in harsh mixed media, such as aqueous slurries of comminuted ore or soils.…”

Section: Introductionmentioning

confidence: 99%

“…19,20,23,24 A number of highly efficient PEIbased composites have been developed for copper extraction from acidic solutions, including mining wastewaters. Just to name a few, PEI-modified montmorillonite, 25 cross-linked PEIdiatomaceous earth particles, 26 glutaraldehyde-PEI particulate resin, 27 PEI-modified magnetic graphene oxide nanocomposites 28 and graphene oxide/PEI sponges 29 were all shown to repeatedly bind copper from acidic aqueous solutions, followed by full copper recovery via washing the copper-loaded materials at pH ∼1. However, the majority of PEI-based composites were designed and tested for application in aqueous solutions only, which restricts their use in harsh mixed media, such as aqueous slurries of comminuted ore or soils.…”

Section: Introductionmentioning

confidence: 99%

Polyethylenimine–Silica–Magnetic Nanoparticle Composites for Efficient Extraction of Dissolved Copper from Aqueous Solutions and Multiphase Mixtures

Semenova

Vidallon

Suzuki

et al. 2023

ACS Appl. Nano Mater.

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Design of micro/nanoadsorbents developed for effective copper extraction should consider methods of their retrieval from relevant copper-rich environments, which are commonly complex multiphase mixtures, such as slurries of polluted soils and sediments, copper minerals including lowgrade ores, and industrial and mining wastes. This work reports integration of copper-chelating polyethylenimine (PEI) with a robust silica network and highly magnetic magnetite nanoparticles, resulting in magnetic PEI−silica nanocomposite microparticles that enable efficient binding of copper ions in both aqueous solutions and complex, multiphase mixtures with subsequent retrieval using magnetic force. Produced via simple emulsion templating, these nanocomposite particles can withstand highly acidic conditions and multiple copper extraction cycles, without loss of efficiency after five consecutive cycles of copper extraction. PEI−silica−magnetic nanoparticles composites effectively bind all copper ions leached into an aqueous phase and allow their rapid magnetically induced separation from aqueous solutions and mixtures of both coarse and fine solid particles, demonstrating promising results for progress toward more sustainable copper extraction techniques.

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Synthesis of graphene oxide/polyethyleneimine sponge and its performance in the sustainable removal of Cu(II) from water

Cited by 32 publications

References 45 publications

Superior adsorption performance of citrate modified graphene oxide as nano material for removal organic and inorganic pollutants from aqueous solution

Superior adsorption performance of citrate modified graphene oxide as nano material for removal organic and inorganic pollutants from aqueous solution

3D Graphene Oxide-Polyethylenimine Scaffolds for Cardiac Tissue Engineering

Polyethylenimine–Silica–Magnetic Nanoparticle Composites for Efficient Extraction of Dissolved Copper from Aqueous Solutions and Multiphase Mixtures

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