Chemical and microscopic analysis of graphene prepared by different reduction degrees of graphene oxide

Solís‐Fernández, Pablo; Rozada, R.; Paredes, J.I.; Villar–Rodil, S.; Fernández-Merino, M.J.; Guardia, L.; Martı́nez-Alonso, A.; Tascón, J.M.D.

doi:10.1016/j.jallcom.2012.01.102

Cited by 77 publications

(39 citation statements)

References 26 publications

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“…reduction of graphene oxide using NH 4 OH. 180 A DFT study by Liu et al has shown that graphite defect sites can react with CH 4 . 181 This study showed that a methane molecule is activated at certain monovacancy sites on the graphite surface.…”

Section: Reactive Gas Adsorptionmentioning

confidence: 99%

Environmental applications using graphene composites: water remediation and gas adsorption

et al. 2013

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This review deals with wide-ranging environmental studies of graphene-based materials on the adsorption of hazardous materials and photocatalytic degradation of pollutants for water remediation and the physisorption, chemisorption, reactive adsorption, and separation for gas storage. The environmental and biological toxicity of graphene, which is an important issue if graphene composites are to be applied in environmental remediation, is also addressed.

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Section: Reactive Gas Adsorptionmentioning

confidence: 99%

Environmental applications using graphene composites: water remediation and gas adsorption

et al. 2013

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“…The analysis of the bonded to oxygen at 287.6 eV (10.69%) [31]. In the O1s region ( Figure 4B), deconvolution exhibited three different components, corresponding to doubly bonded oxygen (in carboxylic groups) at 530.6 eV (4.10%), singly bonded oxygen (in hydroxyl, ether, epoxy and peroxy groups) at 532.4 eV (95.38%) and singly bonded oxygen in peroxy acid and peroxy ester groups at 534.6 eV (0.52%) [32].…”

Section: Fabrication and Characterisation Of Graphene Electrodesmentioning

confidence: 99%

Fabrication of high surface area graphene electrodes with high performance towards enzymatic oxygen reduction

Bari

Goñi-Urtiaga

Pita

et al. 2016

Electrochimica Acta

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These authors contributed equally to the workElectrochimica Acta 191 (2016) 500-509 ; http://dx.doi.org/10.1016/j.electacta.2016.01.101 ABSTRACT High surface area graphene electrodes were prepared by simultaneous electrodeposition and electroreduction of graphene oxide. The electrodeposition process was optimized in terms of pH and conductivity of the solution and the obtained graphene electrodes were characterized by Xray photoelectron spectroscopy, Fourier transform infrared spectroscopy, scanning electron microscopy and electrochemical methods (cyclic voltammetry and impedance spectroscopy).Electrodeposited electrodes were further functionalized to carry out covalent immobilization of two oxygen-reducing multicopper oxidases: laccase and bilirubin oxidase. The enzymatic electrodes were tested as direct electron transfer based biocathodes and catalytic currents as high as 1 mA/cm 2 were obtained. Finally, the mechanism of the enzymatic oxygen reduction reaction was studied for both enzymes calculating the Tafel slopes and transfer coefficients.2

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“…The total oxygen contents of the OAC and GO samples increased t o 1 8 . 45,46 However, it is difficult to determine the H 2 O content due to its weak heat stability of GO in the previous studies. 7 m m o l .…”

Section: Characterization Of the Ocfgs On Adsorbent Surfacementioning

confidence: 99%

Adsorption of quinoline from liquid hydrocarbons on graphite oxide and activated carbons

Feng

et al. 2015

RSC Adv.

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Four carbon-based adsorbents (activated carbon, oxidatively modified activated carbon, graphite, and graphite oxide) were investigated as adsorbents for selective removing quinoline from a model hydrocarbon fuel. The surface chemical properties of these carbon-based adsorbents were characterized by temperatureprogrammed desorption coupled with mass spectrometry (TPD-MS), X-ray photoelectron spectroscopy (XRD), elementary analysis (EA) and nitrogen adsorption-desorption analyzer in detail. The influences of the textural structures and the surface functional groups of these carbon adsorbents on their adsorption performance were examined. The activated carbon modified by ammonium persulfate oxidation (APS) can achieve an adsorption capacity as high as 35.7 mg-N/g. The results indicated that the oxygen-containing functional groups on the surface play a crucial role in determining their adsorptive performance for quinoline. In addition, enhancement of the interlayer distance in the graphite oxide results in an dramatic increase in the adsorption capacity of the graphite oxide. The accessibility of the oxygen functional groups on the surface for quinoline is important to the adsorption behavior. Considering its high adsorption capacity and good regenerability, the graphite oxide may also be a promising adsorbent for selectively adsorptive removing the nitrogen compounds from the liquid hydrocarbon streams.Among the adsorbents, activated carbon (AC) has been widely studied in ADN due to its significant advantages, such as lower price, wider range of sources, and easy modification of pore structure and surface functional groups. 6,15,16,18 More importantly, it has good capacity and reasonable selectivity for nitrogen compounds. However, the maximum ADN capacity of AC reported in the literature is only around 17.6 mg-N per gram of solid, 15, 19 and the adsorption selectivity of ACs for the nitrogen compounds, especially

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Chemical and microscopic analysis of graphene prepared by different reduction degrees of graphene oxide

Cited by 77 publications

References 26 publications

Environmental applications using graphene composites: water remediation and gas adsorption

Environmental applications using graphene composites: water remediation and gas adsorption

Fabrication of high surface area graphene electrodes with high performance towards enzymatic oxygen reduction

Adsorption of quinoline from liquid hydrocarbons on graphite oxide and activated carbons

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