The fabrication of pentaerythritol pillared graphene oxide composite and its adsorption performance towards metal ions from aqueous

Yue, Bao-Yu; Yu, Lin-Yan; Jiao, Feipeng; Jiang, Xinyu; Yu, Jingang

doi:10.5004/dwt.2018.21805

Cited by 24 publications

(3 citation statements)

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“…Because lead ions are more harmful to the human body and tend to accumulate in the body, their removal from wastewater is necessary [2]. Adsorption method was extensively used to remove/recover toxic metal ions, owing to its low cost, convenient operation, no secondary pollution and diversified nature [3][4][5]. Most conventional adsorbents are in powder form, which makes it difficult to collect after adsorption.…”

Section: Introductionmentioning

confidence: 99%

Facile fabrication of sodium carboxymethyl cellulose/reduced graphene oxide composite hydrogel and its application for Pb(II) removal

Zhang

Huang

et al. 2020

Micro & Nano Letters

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Heavy metals ions in water have attracted close attention due to their toxicity, non-biodegradability and carcinogenicity [1]. Because lead ions are more harmful to the human body and tend to accumulate in the body, their removal from wastewater is necessary [2]. Adsorption method was extensively used to remove/recover toxic metal ions, owing to its low cost, convenient operation, no secondary pollution and diversified nature [3-5]. Most conventional adsorbents are in powder form, which makes it difficult to collect after adsorption. Graphene and its derivative have become widely used for functional materials [6, 7]. Graphene oxide (GO) with plenty of reactive functional groups including hydroxyl, carboxyl and epoxy groups is obtained by strong oxidation and stripping of graphite. Abundant oxygen-containing functional groups can be used as active sites to adsorb heavy metals. Therefore, GO can be widely used in the field of heavy metal adsorption [8, 9]. However, due to the presence of a large number of hydrophilic groups, GO has good hydrophilicity, which makes it difficult to be separated and recycled after adsorption [10, 11]. Therefore, it is necessary to further modify the GO. It is expected to assemble three-dimensional (3D) aerogels by combining GO with chain-like biomass molecules or polymers. Sodium carboxymethyl cellulose (CMC), a hydrosoluble anion linear biopolymer and semi-synthetic derivative of cellulose, is obtained by substituting the 2,3,6-hydroxyl groups of cellulose with a carboxymethyl moiety [12]. Because of its low cost, nontoxic, renewable, biodegradable and modifiable characteristics, CMC is considered a biocompatible material and can be used for drug delivery and tissue engineering. And the CMC aqueous solution still has high viscosity at low concentration, it is widely used as an adhesive in industry. It is also an effective adsorbent for removing metal ions because it contains many active functional groups, including hydroxyl and carboxyl groups that can chelate metal ions and interact with organic compounds. However, it has weak mechanical properties. Therefore, it is difficult to directly assemble GO and CMC to form aerogels with strong mechanical properties. Recent work has demonstrated that during AA reduction of graphene oxide, some oxygen-containing This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Section: Introductionmentioning

confidence: 99%

Facile fabrication of sodium carboxymethyl cellulose/reduced graphene oxide composite hydrogel and its application for Pb(II) removal

Zhang

Huang

et al. 2020

Micro & Nano Letters

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“…Graphene oxide (GO) possesses numerous oxygen atoms on the surface in the form of epoxy, hydroxyl, and carboxyl groups [7]. Because of its large specific surface area and abundant oxygen-containing functional groups, GO has been suggested as an effective adsorbent to remove organic and inorganic pollutants [8][9][10][11]. With increasing application of GO in wastewater treatment, some disadvantages restrict its practical application for dye removal.…”

Section: Introductionmentioning

confidence: 99%

Preparation of mesoporous graphene oxide/SBA-15 hybrid nanoparticles as a potential adsorbent for removal of cationic dyes

Liou¹,

Lin²

2019

Desalination and Water Treatment

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In this paper, mesoporous graphene oxide/SBA-15 nanocomposite was used as an adsorbent for removing cationic dyes from wastewater. Adsorption experiments tested the initial concentration of dye, calcination temperature, and pH of dye solution. The features of the composite were examined through X-ray diffractometry, field-emission scanning electron microscopy, transmission electron microscopy, Raman spectrometry, Fourier transform infrared spectrometer, and surface area analysis. The graphene oxide/SBA-15 samples possessed a high degree of oxidation that gave the composite an excellent adsorptive property toward dye. Higher solution pH and initial concentration of dye favored methylene blue adsorption. Adsorption capacity was highest at a calcination temperature of 550°C. Adsorption kinetics and isotherms were analyzed. The adsorption process was well fitted by the pseudo-second order kinetic model and Langmuir isotherm model. The mesoporous graphene oxide/SBA-15 composite is a promising material for removing aqueous organic pollutants.

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“…Among these methods, adsorption is considered to be a promising and widely used method. It has great advantages such as simple to operate, cost‐effective, good pH tolerance and high efficiency [1, 7, 8]. Thus, it is significative to explore novel adsorbents which can effectively remove heavy metal ions.…”

Section: Introductionmentioning

confidence: 99%

Green fabrication of SH‐modified GO composite for heavy metal ions removal in aqueous solution

Zhang

Luo

et al. 2019

Micro & Nano Letters

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Humic acid (HA) sodium salt (SH)-modified graphene oxide (GO) composite, which could snatch Pb (II), Cd (II) and Cu (II) effectively from aqueous solution, was fabricated by a green hydrothermal method. Here, the morphology and structure of as-synthesised SH-GO composite was presented through scanning electron microscopy, Roman spectra, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy and thermal gravimetric analysis. Owing to the introduction of cheap and readily available HA sodium salt, the adsorption capacity of SH-GO toward heavy metals was improved obviously, and the corresponding removal behaviours were further investigated in detail. Besides, the adsorption results were in good agreement with Langmuir isotherm and the pseudo-second kinetic model, where the thermodynamic parameters revealed the adsorption process was spontaneous and endothermic in essence. Adsorption-desorption result showing its stable adsorption capacity confirmed its great potential as adsorbent for removal of heavy metal ions from aqueous solution.

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The fabrication of pentaerythritol pillared graphene oxide composite and its adsorption performance towards metal ions from aqueous

Cited by 24 publications

References 0 publications

Facile fabrication of sodium carboxymethyl cellulose/reduced graphene oxide composite hydrogel and its application for Pb(II) removal

Facile fabrication of sodium carboxymethyl cellulose/reduced graphene oxide composite hydrogel and its application for Pb(II) removal

Preparation of mesoporous graphene oxide/SBA-15 hybrid nanoparticles as a potential adsorbent for removal of cationic dyes

Green fabrication of SH‐modified GO composite for heavy metal ions removal in aqueous solution

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