Preparation of graphene oxide aerogel and its adsorption for Cu2+ ions

Mi, Xue; Huang, Gan-Yun; Xie, Weisong; Wang, Wei; Liu, Yu; Gao, Jianping

doi:10.1016/j.carbon.2012.06.013

Cited by 474 publications

(222 citation statements)

References 36 publications

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“…However, the carbon-based 3D porous networks have limited compatibility and most of them only show affinity to certain category of contaminants [7][8][9][10][11]. This limitation hinders the real industrial wastewater treatment since it normally contains diverse types of pollutants (e.g., heavy metal ions, dyes, oils, and other organic compounds) [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Preparation of graphene-MoS2 hybrid aerogels as multifunctional sorbents for water remediation

Chen

et al. 2017

Sci. China Mater.

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The increasing demand of clean water and effective way to recycle industrial wastewater has offered a new application for carbon-based three-dimensional (3D) porous networks as sorbents due to their superior sorption abilities. Through the surface modification and hybridization with functional materials, the physical and chemical properties of the 3D carbon-based materials can be engineered. In this work, graphene-MoS 2 aerogels (GMAs) with bulky shape are synthesized via a one-pot hydrothermal method. The obtained GMAs show quick sorption rate and high sorption capacity towards a wide variety of contaminants. The sorption covers not only organic solvents or organic dyes, but also toxic heavy metals ions such as Hg 2+ and Pb 2+ . More importantly, the sorption capacity towards metal ions can be optimized by simply changing the loading amount of MoS 2 .

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Section: Introductionmentioning

confidence: 99%

Preparation of graphene-MoS2 hybrid aerogels as multifunctional sorbents for water remediation

Chen

et al. 2017

Sci. China Mater.

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“…Depending on building material, strength of the bonds between forming particles/rods/sheets and presence of the dopants in the porous matrix, aerogels can be applied as adsorbents [2], filters [3], catalysts [4,5] or sensors [5,6]. Among the others, graphene oxide (GO) is one of the most interesting building materials for aerogel structures [7], which thanks to the high specific surface area and threedimensional structure can be applied as electrodes in supercapacitors [8,9].…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of partially reduced graphene oxide aerogels doped with transition metal ions

et al. 2018

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This work presents the preparation and characterization of pristine and transition metal doped partially reduced graphene oxide aerogels. The step-by-step preparation of aerogels from graphene oxide with an assistance of VCl 3 , CrCl 3 , FeCl 2 Á4H 2 O, CoCl 2 , NiCl 2 and CuCl 2 chlorides as reducing agents is shown and explained. The influence of reducing agents on the structural and magnetic properties of prepared aerogels is investigated. The use of electron paramagnetic resonance in purification during synthesis of GO and characterization afterwards is shown. It was found that VCl 3 was the strongest reducing agent leading to the formation of the most dense reduced graphene oxide aerogel, whereas vanadium is visible in EPR spectrum in form of V 4? complex as a VO 2?groups.

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“…Therefore, GO has an amphiphile surface with hydrophilic edges and hydrophobic plane [17]. In addition, GO has many applications such as catalytic supports for chemical reactions [18,19], adsorption [20,21], and separation of pollutants [22].…”

Section: Introductionmentioning

confidence: 99%

Preference of Nano porous graphene to Single-Walled Carbon Nanotube (SWCNT) for preparing Silica Nano hybrid Pickering Emulsion for potential Chemical Enhanced Oil Recovery (C-EOR)

AfzaliTabar

Alaei²,

Khojasteh

et al. 2017

Scientia Iranica

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Abstract. We prepared nanoporous graphene/silica nanohybrid and demonstrated its better Pickering emulsion properties for Chemical Enhanced Oil Recovery in comparison to the similar silica nanohybrid with a single-walled carbon nanotube. The samples were characterized with X-Ray Di raction (XRD), Field Emission Scanning Electron Microscopy (FE-SEM), and Thermal Gravimetry Analysis (TGA). Emulsion phase morphology was investigated with optical microscopic image. Evaluation results demonstrated that the best samples are 70% nanoporous graphene/SiO 2 (both methods) and 70% SWCNT/SiO 2 nanohybrid (Method 1). Contact angle measurement results showed that 70% nanoporous graphene/SiO 2 nanohybrid (Method 2) is more e ective in the improvement of the stone reservoir wettability alteration from oil-wet to water-wet. Interfacial tension results indicate that the maximum amount is related to the injection of water, and the minimum amount is related to the injection of nano uid of 70% nanoporous graphene/SiO 2 nanohybrid (Method 2). This result indicates the preference of 70% nanoporous graphene/SiO2 nanohybrid (Method 2) for decreasing the interfacial tension in comparison to the other samples.

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Preparation of graphene oxide aerogel and its adsorption for Cu2+ ions

Cited by 474 publications

References 36 publications

Preparation of graphene-MoS2 hybrid aerogels as multifunctional sorbents for water remediation

Preparation of graphene-MoS2 hybrid aerogels as multifunctional sorbents for water remediation

Preparation and characterization of partially reduced graphene oxide aerogels doped with transition metal ions

Preference of Nano porous graphene to Single-Walled Carbon Nanotube (SWCNT) for preparing Silica Nano hybrid Pickering Emulsion for potential Chemical Enhanced Oil Recovery (C-EOR)

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