Adsorption–photodegradation synergetic removal of methylene blue from aqueous solution by NiO/graphene oxide nanocomposite

Rong, Xinshan; Qiu, Fengxian; Zhang, Chen; Fu, Liang; Wang, Yuanyuan; Yang, Dongya

doi:10.1016/j.powtec.2015.01.079

Cited by 65 publications

(20 citation statements)

References 28 publications

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“…In addition to electromagnetic wave absorbers, NiO/graphene composites can absorb heavy metals and organic dyes due to their extremely large specific surface area. Zhang et al.…”

Section: Other Applicationsmentioning

confidence: 99%

“…proposed rGO/NiO nanocomposites with a maximum Cr VI adsorbing capacity of 198 mg g −1 . Rong and co‐workers fabricated a NiO/GO nanocomposite and a NiO/graphene nanocomposite for Methylene Blue and Congo Red azo‐dye absorption, respectively. Acting as the absorbers and photocatalysts, NiO/graphene could simultaneously adsorb and photodegrade the organic dyes and could be applied to remove dye in wastewater efficiently.…”

Section: Other Applicationsmentioning

confidence: 99%

“…In addition to electromagnetic wave absorbers, NiO/graphene composites can absorb heavy metals [150] ando rganic dyes [151,152] due to their extremelyl arge specific surfacea rea. Zhang et al proposed rGO/NiO nanocomposites with am aximum Cr VI adsorbing capacity of 198 mg g À1 .…”

Section: Other Absorbersmentioning

confidence: 99%

“…Zhang et al proposed rGO/NiO nanocomposites with am aximum Cr VI adsorbing capacity of 198 mg g À1 . [150] Rong and coworkers fabricated aN iO/GO nanocomposite and aN iO/graphene nanocomposite for Methylene Blue [151] and Congo Red azo-dye [152] absorption, respectively.A cting as the absorbers and photocatalysts, NiO/graphene could simultaneously adsorb and photodegrade the organic dyes and could be applied to remove dye in wastewater efficiently.H owever,t he large-scale industrial application of NiO/graphene composite absorbers is hampered by the complicated multiple-step preparation procedures, whichs hould be the focus of future investigations.…”

Section: Other Absorbersmentioning

confidence: 99%

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Nickel Oxide/Graphene Composites: Synthesis and Applications

Liu

Gao

et al. 2018

Chemistry A European J

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Nickel oxide (NiO) has emerged as one of the most promising transition-metal oxides (TMOs) for electrochemical capacitors, batteries, catalysis, and electrochromic films, owing to its cost-effectiveness, abundance, and well-defined electrochemical properties. Recent studies have identified that mixing NiO with graphene or graphene derivatives results in novel composites with synergistic effects and superior electrochemical performance. This review summarizes the latest advances in composites of NiO with graphene or graphene derivatives. The synthetic strategies, morphologies, and electrochemical performance of these composites are introduced, as well as their electrochemical applications in supercapacitors, batteries, sensors, catalysis, and so forth. Finally, tentative conclusions and assessments regarding the opportunities and challenges for the future development of these composites and other TMOs/graphene or graphene-derived composites are presented.

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“…In addition to electromagnetic wave absorbers, NiO/graphene composites can absorb heavy metals and organic dyes due to their extremely large specific surface area. Zhang et al.…”

Section: Other Applicationsmentioning

confidence: 99%

Section: Other Applicationsmentioning

confidence: 99%

Section: Other Absorbersmentioning

confidence: 99%

Section: Other Absorbersmentioning

confidence: 99%

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Nickel Oxide/Graphene Composites: Synthesis and Applications

Liu

Gao

et al. 2018

Chemistry A European J

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“…48 In general, the solution pH can affect the surface charge of the adsorbent, the degree of ionization/ dissociation of dye molecules as well as dissociation of functional groups on the active sites of the adsorbent.…”

Section: Effect Of Phmentioning

confidence: 99%

Graphene Oxide/Co3O4 Nanocomposite: Synthesis, Characterization, and Its Adsorption Capacity for the Removal of Organic Dye Pollutants from Water

Pourzare

Farhadi

Mansourpanah

2017

ACSi

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In this work, graphene oxide/Co 3 O 4 nanocomposite was synthesized via hydrothermal decomposition of [Co(en) 3 ] (NO 3 ) 3 complex onto graphene oxide nanosheets. The as-prepared nanocomposite (denoted as GO/Co 3 O 4 ) was structurally characterized by Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopies (TEM and SEM), energy dispersive X-ray (EDX) spectroscopy, magnetic measurements, and N 2 adsorption-desorption analysis. The results demonstrated successful immobilization of Co 3 O 4 nanoparticles with an average diameter size of around 12.5 nm on the surface of graphene oxide nanosheets. The adsorption performance of GO/Co 3 O 4 nanocomposite was investigated towards different organic dyes in aqueous solutions. The results displayed that the adsorption rate of the GO/Co 3 O 4 nanocomposite was 98% for methylene blue (MB) in 12 min, and 66% and 45% for Rhodamine B (RhB) and methyl orange (MO) in 40 min, respectively. The effects of various important parameters including adsorbent dosage, contact time, pH, and temperature on the adsorption process were investigated in detail. The equilibrium adsorption data were better fitted by Langmuir isotherm. Adsorption kinetics is well-modeled using pseudo-second-order model. Different thermodynamic parameters indicated that the adsorption process was physisorption and spontaneous. The findings of the present work highlighted facile fabrication of GO/Co 3 O 4 and its application for rapid and efficient removal of MB from wastewater.

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