Graphene/waste-newspaper cellulose composite aerogels with selective adsorption of organic dyes: preparation, characterization, and adsorption mechanism

Feng, Chuting; Ren, Penggang; Li, Zhen; Tan, Wenzhen; Zhang, Hua; Jin, Yanling; Ren, Fangfang

doi:10.1039/c9nj05346h

Cited by 64 publications

(26 citation statements)

References 53 publications

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“… Adsorbate Adsorbent q° (mg/g) Refs. MB Activated charcoal 76.92 34 Graphene oxide-activated carbon 147 35 Activated serpentinemineral decorated with magnetic nanoparticles 162 36 AFe 53.79 37 Modified clinoptilolite 52 38 GO/WCE 57.60 39 CMC-Alg/GO hydrogel beads 78.5 40 GO–C 222.22 This work CV Polyacrylonitrile/β-cyclodextrin/graphene oxide nanofibers composite 15.84 41 Activated charcoal 33.33 34 Graphene oxide-activated carbon 70 35 Palm kernel shell-derived biochar 24.45 42 Natural Fly ash modified with calcium oxide 38.75 43 Mesocellular foam (MCF) silica molecular sieve 6.646 44 ...…”

Section: Resultsmentioning

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: Resultsmentioning

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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“…In sub-summary, recently, the improvements in dyes adsorbents by cellulose aerogel have been widely published, but it is mainly functionalized with high-purity sources in terms of nanofibrils [60,67], carboxylated cellulose nanofibers [70], and microcrystalline cellulose [72], or industrial waste as cotton [68,69], new-paper [73]. The potentialities of modified-cellulose aerogel by agricultural byproducts such as coir, pineapple leaves, rice straw/husk, and bamboo would be extensively researched.…”

Section: 2mentioning

confidence: 99%

Recent Developments in Water Treatment by Cellulose Aerogels from Agricultural Waste

Nguyen

et al. 2021

IOP Conf. Ser.: Earth Environ. Sci.

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Water pollution caused by inorganic and organic compounds affects seriously health risks and the destruction of the water balance of the ecosystem. Water remediation is one of the greatest challenges of the modern age, which is faced by several countries in over the world. Many advanced technologies have been developed in recent years to manage this alarming problem. One of the recent research directions is to utilize agricultural waste, which is an abundant, low-cost, eco-friendly source, to manufacture cellulose aerogels for the removal of heavy metals, dyes, and oils from contaminated water. This review paper focuses on the latest green fabrication of bio-aerogels from various cellulose-based plant waste and studies on the kinetics and influence of factors such as contact time, pH solution, initial concentration, and temperature on the adsorption process to better understand the mechanisms of water treatment by the cellulose aerogels. Based on the discussion and summary, the potential of agro-waste sources in their value-added chain by developing efficient water treatment cellulose aerogels is comprehensively overviewed.

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“…Structural analysis and characterization of aerogel developed from graphene oxide/cellulose show that it has a foam-like structure with adequate adsorption capacity. Various interactions were reported between aerogel and dyes, like electrostatic interaction, charge repulsion, and pi-pi interaction [158]. Graphene oxide is also reported to be modified with silk fibroin.…”

Section: Aerogels In Dye Removalmentioning

confidence: 99%

Multifunctional Composite Aerogels—As Micropollutant Scavengers

Mertah

James

Zargar

et al. 2021

Inorganic-Organic Composites for Water and Wastewater Treatment

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Composite aerogels are low-density porous material with a high surface area, facilitating their application in wastewater treatment. The surface of these aerogels can be modified based on the ionic charge of the target pollutants. Improved properties like high gas holdup, a low mean free path of diffusion, high mechanical strength, and integrated 3D gel architecture make them an ideal matrix for several environmental applications. This review focuses on carbon, silica, metal-based, and biopolymer composite aerogels toward effluent treatment. The challenges in the synthesis of aerogels using various reduction methods and strategies for surface modification of aerogels having improved water treatment properties are compared. Composite aerogels' application for removing textile dyes, heavy metals, and pesticides, and the oil separation is discussed along with relevant reaction kinetics. The adsorptive and photocatalytic removal of micropollutants by aerogels are also compared. Though several novel composite aerogels have been experimented with in wastewater treatment, the toxicity implications limit their extensive scale application. The toxicity of precursor compounds such as polyacrylonitrile, resorcinol-formaldehyde, phenol, Tetramethyl orthosilicate (TMOS), and leaching of nanoparticles from aerogels are discussed. As a solution to these impediments, bio-aerogels' use and O. Mertah et al.-All authors contributed equally.

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Graphene/waste-newspaper cellulose composite aerogels with selective adsorption of organic dyes: preparation, characterization, and adsorption mechanism

Abstract: Waste-newspaper cellulose/graphene composite aerogels were facilely synthesized via the sol–gel and freeze-drying processes for dye wastewater treatment.

Cited by 64 publications

References 53 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

Recent Developments in Water Treatment by Cellulose Aerogels from Agricultural Waste

Multifunctional Composite Aerogels—As Micropollutant Scavengers

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