Graphene-based materials: Fabrication, characterization and application for the decontamination of wastewater and wastegas and hydrogen storage/generation

Wang, Hou; Yuan, Xingzhong; Wu, Yan; Huang, Huajun; Peng, Xin; Zeng, Guangming; Zhong, Hua; Liang, Jie; Miaomiao, Ren

doi:10.1016/j.cis.2013.03.009

Cited by 334 publications

(142 citation statements)

References 388 publications

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“…[31][32][33][34][35][36][37][38][39] In addition, in comparison with other carbonaceous nanomaterials, GO may be more environmental friendly and have better biocompatibility. 40 However, it is difficult to separate it from aqueous solution because of its small particle size, causing serious health and environmental problems once it is discharged into the environment.…”

Section: Introductionmentioning

confidence: 99%

Magnetically Recyclable Fe3O4/GO-NH2/H3PMo12O40 Nanocomposite: Synthesis, Characterization, and Application in Selective Adsorption of Cationic Dyes from Water

Farhadi¹,

Hakimi²,

Maleki³

2017

ACSi

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In this study, the PMo 12 O 40 3− polyanion was immobilized chemically on amino functionalized magnetic graphene oxide nanosheets. The as-prepared ternary magnetic nanocomposite (Fe 3 O 4 /GO-NH 2 /H 3 PMo 12 O 40 ) was characterized by powder X-ray powder diffraction (XRD), fourier transformation infrared spectroscopy (FTIR), Raman spectroscopy, energy dispersive spectroscopy (EDX), field emission scanning electron microscopy (FESEM), BET surface area measurements, magnetic measurements (VSM) and atomic force microscopy (AFM). The results demonstrated the successful loading of H 3 PMo 12 O 40 (~36.5 wt.%) on the surface of magnetic graphene oxide. The nanocomposite showed a higher specific surface area (77.07 m 2 /g) than pure H 3 PMo 12 O 40 (≤10 m 2 /g). The adsorption efficiency of this nanocomposite for removing methylene blue (MB), rhodamine B (RhB) and methyl orange (MO) from aqueous solutions was evaluated. The nanocomposite showed rapid and selective adsorption for cationic dyes from mixed dye solutions. The adsorption rate and capacity of Fe 3 O 4 /GO-NH 2 /H 3 PMo 12 O 40 were enhanced as compared with GO, GO-NH 2 , Fe 3 O 4 /GO-NH 2 , and H 3 PMo 12 O 40 samples due to enhanced electrostatic attraction and hydrogen-bonding interactions. The nanocomposite is magnetically separated and reused without any change in structure. Thus, it could be a promising green adsorbent for removing organic pollutants in water.

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Section: Introductionmentioning

confidence: 99%

Magnetically Recyclable Fe3O4/GO-NH2/H3PMo12O40 Nanocomposite: Synthesis, Characterization, and Application in Selective Adsorption of Cationic Dyes from Water

Farhadi¹,

Hakimi²,

Maleki³

2017

ACSi

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“…Conjugated carbon materials, such as fullerenes, graphene, carbon nanotubes, and graphite are excellent candidates for refining the transport of photocarriers during photocatalysis through the formation of electronic interactions with photocatalyst nanoparticles. Among carbon-based materials, graphene has been reported as an efficient co-catalyst for photocatalytic H 2 production because of its high specific surface area (theoretical value 2600 m 2 g -1 ), excellent electron mobility (15000 m 2 V -1 s -1 at room temperature), thermal conductivity, and high mechanical strength [20][21][22] . In recent years, reduced graphene oxide (rGO) has been modified with different nanoparticles, such as ZnO 23 , TiO 2 24 and CdS 25 .…”

Section: Introductionmentioning

confidence: 99%

Efficient Photocatalytic Hydrogen Evolution by Iron Platinum Loaded Reduced Graphene Oxide

Moradi¹

2016

Chem.Biochem.Eng.Q.

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In this work, graphene oxide (GO) was prepared by the Hummers method from natural graphite, and modified with iron and platinum nanoparticles by the solvothermal method. The structural order and textural properties of the grapheme-based materials were studied by BET, TEM, XRD, TG-DTA, and XPS techniques. UV−Vis diffuse reflectance spectra indicate the band gap for FePt and FePt-rGO composites to be 3.2 and 2.8 eV, respectively. FePt-rGO showed a hydrogen generation rate higher than that of the FePt nanoparticles. A detailed study of Pt effect on the photocatalytic H 2 production rates showed that Pt NPs could act as an effective co-catalyst, enhancing photocatalytic activity of FePt-rGO. The FePt-rGO gave a H 2 production rate of 125 µmol g -1 h -1. This is ascribed to the presence of Pt NPs (acting as electron sinks) and graphene oxide (as an electron collector and transporter) in FePt-rGO composites.

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“…Graphenebased materials have been used as adsorbents or heterogeneous (photo)catalysts for effective removal or degradation of a range of heavy metal/metalloid and organic contaminants, including As, Cr, U, dyes, bisphenol A, perchlorate, bulk oil and gasoline [17,19,[23][24][25].…”

Section: Introductionmentioning

confidence: 99%

“…The use of nanocarbon-based materials in adsorptive and catalytic applications for removal or destruction of emerging (or problem) contaminants has also been widely discussed [16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Graphene oxide-based degradation of metaldehyde: Effective oxidation through a modified Fenton’s process

Nguyen

Busquets

Ray

et al. 2017

Chemical Engineering Journal

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A modified graphene oxide-based Fenton's reaction has been investigated for the degradation of a challenging emerging contaminant which is not effectively removed in conventional water treatment. Metaldehyde, used as the challenge molecule in this study, is a common molluscicide that (like many highly soluble contaminants) has frequently breached European regulatory limits in surface waters. The new method involves graphene with higher hydrophilic characteristics (Single-Layer Graphene Oxide, SLGO) as a system that participates in a redox reaction with hydrogen peroxide and which can potentially stabilize the •OH generated, which subsequently breaks down organic contaminants. The modified Fenton's reaction has shown to be effective in degrading metaldehyde in natural waters (>92% removal), even at high contaminant concentrations (50 mg metaldehyde/L) and in the presence of high background organic matter and dissolved salts. The reaction is relatively pH insensitive. SLGO maintained its catalytic performance over 3 treatment cycles when immobilized. Its performance gradually decreased over time, reaching around 50% of starting performance on the 10 th treatment cycle. X-ray Photoelectron Spectroscopy (XPS) analysis of modifications caused in SLGO by the oxidizing treatment indicated that the oxidation of C-C sp 2 to carbonyl groups may be the cause of the decrease in performance. The proposed modified Fenton's process has the potential to substitute traditional Fenton's treatment although regeneration of the nanocarbon is required for its prolonged use. Highlights: SLGO and H 2 O 2 can degrade metaldehyde-contaminated water  pH and total organic carbon are not critical in the modified Fenton's process  SLGO has been immobilized and can be re-used  Regeneration of SLGO is needed to improve cost-effectiveness 4

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Graphene-based materials: Fabrication, characterization and application for the decontamination of wastewater and wastegas and hydrogen storage/generation

Cited by 334 publications

References 388 publications

Magnetically Recyclable Fe3O4/GO-NH2/H3PMo12O40 Nanocomposite: Synthesis, Characterization, and Application in Selective Adsorption of Cationic Dyes from Water

Magnetically Recyclable Fe3O4/GO-NH2/H3PMo12O40 Nanocomposite: Synthesis, Characterization, and Application in Selective Adsorption of Cationic Dyes from Water

Efficient Photocatalytic Hydrogen Evolution by Iron Platinum Loaded Reduced Graphene Oxide

Graphene oxide-based degradation of metaldehyde: Effective oxidation through a modified Fenton’s process

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