A Strategy for Producing Pure Single‐Layer Graphene Sheets Based on a Confined Self‐Assembly Approach

Zhang, Weixia; Cui, Jiecheng; Tao, Cheng‐an; Wu, Yiguang; Li, Zhanping; Ma, Li; Wen, Yuanqiao; Li, Guangtao

doi:10.1002/anie.200902365

Cited by 237 publications

(106 citation statements)

References 29 publications

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“…GO has a strong peak at 2θ=10.1°, corresponding to the (001) plane with interplanar spacing of 0.87 nm [18] , which couldn't be observed here. Instead, from Fig.2(A), the broad peak around 2θ=24.6° marked with asterisk shows up, indicating GO has been reduced to rGO [19] . The diffraction peaks of the as-synthesized product at 2θ=18.…”

Section: Resultsmentioning

confidence: 93%

One-pot hydrothermal synthesis of rGO-Fe3O4 hybrid nanocomposite for removal of Pb(II) via magnetic separation

Cao

Zhou

et al. 2015

Chem. Res. Chin. Univ.

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The reduced graphene oxide-Fe 3 O 4 (rGO-Fe 3 O 4 ) hybrid nanocomposite was prepared via a one-pot facile hydrothermal method for adsorption of heavy metal ions. The results of compositional and morphological characterizations show that the Fe 3 O 4 NPs with an average diameter of 20 nm have been uniformly dispersed in rGO sheets. Due to the higher specific surface area of rGO and the magnetic properties of Fe 3 O 4 nanoparticles, the prepared rGO-Fe 3 O 4 hybrid nanosheets showed good adsorption capacity for the removal of Pb(II) from wastewater by simple magnetic separation. The result of control tests show that the adsorption capacity of rGO-Fe 3 O 4 can be influenced by the ratio of ferric chloride(FeCl 3 ) to graphene oxide(GO) during the process of sample preparation and the initial concentration of Pb(II). A better adsorption capacity was 30.68 mg/g at n(FeCl 3 )/m(GO) ratio of 1:5(mmol:mg) at pH=7.0 with the initial concentration of Pb(II) ions of 80 mg/L, and the experimental data were well fitted with the Langmuir adsorption model. The composite with absorbed Pb(II) can be easily collected by magnetic separation from wastewater because of the excellent magnetism of Fe 3 O 4 NPs. The rGO-Fe 3 O 4 hybrid nanocomposite provides an effective and environment-friendly absorbent with great application potential in water purification.

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Section: Resultsmentioning

confidence: 93%

One-pot hydrothermal synthesis of rGO-Fe3O4 hybrid nanocomposite for removal of Pb(II) via magnetic separation

Cao

Zhou

et al. 2015

Chem. Res. Chin. Univ.

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“…A bottom-up technique also has been developed by Li and co-workers for synthesizing processible CCG. [ 36 ] In the process, a special structure-directing surfactant containing a pyrrole moiety was used as the starting material to construct lamellar mesostructured silica. Between the lamellar silica frameworks, the pyrrole moieties were densely packed in a controlled fashion within confi ned 2D spaces.…”

Section: Structurementioning

confidence: 99%

Functional Composite Materials Based on Chemically Converted Graphene

2011

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Graphene, a one-atom layer of graphite, possesses a unique two-dimensional structure and excellent mechanical, thermal, and electrical properties. Thus, it has been regarded as an important component for making various functional composite materials. Graphene can be prepared through physical, chemical and electrochemical approaches. Among them, chemical methods were tested to be effective for producing chemically converted graphene (CCG) from various precursors (such as graphite, carbon nanotubes, and polymers) in large scale and at low costs. Therefore, CCG is more suitable for synthesizing high-performance graphene based composites. In this progress report, we review the recent advancements in the studies of the composites of CCG and small molecules, polymers, inorganic nanoparticles or other carbon nanomaterials. The methodology for preparing CCG and its composites has been summarized. The applications of CCG-based functional composite materials are also discussed.

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“…In bottom-up processes, graphene is synthesized by a variety of methods such as chemical vapor deposition (CVD), 45,46 arc discharge, 47 epitaxial growth on SiC, 48 chemical conversion, 49 reduction of CO, 50 unzipping carbon nanotubes 51,52 and self-assembly of surfactants. 53 The CVD approach to produce graphene relies on dissolving carbon into metal surfaces, such as Ni and Cu that act as catalysts 54,55 and then forcing it to separate by cooling the metal. The thickness and crystalline ordering of the precipitated carbon are controlled by the cooling rate and by the concentration of carbon dissolved in the metal.…”

Section: Figmentioning

confidence: 99%

Graphene based metal and metal oxide nanocomposites: synthesis, properties and their applications

et al. 2015

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A Strategy for Producing Pure Single‐Layer Graphene Sheets Based on a Confined Self‐Assembly Approach

Cited by 237 publications

References 29 publications

One-pot hydrothermal synthesis of rGO-Fe3O4 hybrid nanocomposite for removal of Pb(II) via magnetic separation

One-pot hydrothermal synthesis of rGO-Fe3O4 hybrid nanocomposite for removal of Pb(II) via magnetic separation

Functional Composite Materials Based on Chemically Converted Graphene

Graphene based metal and metal oxide nanocomposites: synthesis, properties and their applications

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