Exfoliation of Graphene from Graphite and Their Self-Assembly at the Oil−Water Interface

Tang, Zhizhong; Zhuang, Jing; Wang, Xun

doi:10.1021/la9049082

Cited by 88 publications

(60 citation statements)

References 15 publications

(21 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1c). 68 and the exfoliated synthesis of graphene from graphite 69,70 have become the most promising for the large-scale synthesis of graphene. Zhang et al 71 reported the vapour trapping growth of ower like graphene via a CVD method.…”

Section: Structure Of Graphenementioning

confidence: 99%

Graphene-based nanocomposites for energy storage and conversion in lithium batteries, supercapacitors and fuel cells

et al. 2014

View full text Add to dashboard Cite

Due to their unique properties, together with their ease of synthesis and functionalization, graphene-based materials have been showing great potential in energy storage and conversion. These hybrid structures display excellent material characteristics, including high carrier mobility, faster recombination rate and long-time stability. In this review, after a short introduction to graphene and its derivatives, we summarize the recent advances in the synthesis and applications of graphene and its derivatives in the fields of energy storage (lithium ion, lithium-air, lithium-sulphur batteries and supercapacitors) and conversion (oxygen reduction reaction for fuel cells). This article further highlights the working principles and problems hindering the practical applications of graphene-based materials in lithium batteries, supercapacitors and fuel cells. Future research trends towards new methodologies to the design and the synthesis of graphene-based nanocomposite with unique architectures for electrochemical energy storage and conversion are also proposed. The Royal Society of Chemistry.

show abstract

Section: Structure Of Graphenementioning

confidence: 99%

Graphene-based nanocomposites for energy storage and conversion in lithium batteries, supercapacitors and fuel cells

et al. 2014

View full text Add to dashboard Cite

show abstract

“…6,7 Intercalation-exfoliation of graphite, 8 liquid phase exfoliation or direct conversion of graphite by different routes such as ultrasonication in various solvents etc. 9,10 have also been developed. In a seminal paper in 2006, Schneipp et al 11 showed that few layer graphene sheets can be obtained by thermal splitting of graphite oxide (GO).…”

Section: Introductionmentioning

confidence: 99%

A Raman spectroscopic investigation of graphite oxide derived graphene

2012

View full text Add to dashboard Cite

Graphene sheets that are now routinely obtained by the exfoliation/reduction of graphite oxide exhibit Raman spectra unlike traditional graphene systems. The general attributes of the Raman spectra of these ‘wrinkled graphene’ are first reaffirmed by evaluating the spectra of samples prepared by seven different exfoliation-reduction methods. These graphene sheets exhibit highly broadened D and G Raman bands and in addition, have a modulated bump in place of the conventional 2D (G′) band. It is shown that the high wavenumber ‘bump’ can be resolved into the conventional 2D band and several defect activated peaks such as G*, D+D′ and 2D′. The broad G band could also be deconvoluted into the actual G band and the D′ band, thereby attributing the broadening in the G band to the presence of this defect activated band. Two additional modes, named as D* at 1190 cm-1 and D** at ∼1500 cm-1 could be identified. These peculiar features in the Raman spectrum of ‘graphene’ are attributed to the highly disordered and wrinkled (defective) morphology of the sheets. The affect of defects are further augmented due to the finite crystallite size of these graphene sheets. The dispersion in the band positions and peak intensities with respect to the laser energy are also demonstrated

show abstract

“…[19][20][21] The advantage of interfacial assembly of low-dimensional carbon species (GR and SWCNTs) is the ability to form macroscopic films spontaneously, from self-assembly of individual flakes and particles at liquid/liquid interfaces. [22][23][24][25] There is a small body of work on the localization of chemical vapor deposited (CVD) GR and multilayer graphene (MLG) materials (consisting of a small number, between 2 and about 10 of well-defined, countable, stacked GR layers) 26 at the polarizable organic/water interface. 27,28 This approach is exemplified using the electro-deposition of Pd nanoparticles (NPs) on free-standing CVD GR 27 or MLG and SWCNT layers.…”

Section: Introductionmentioning

confidence: 99%

Preparation of low-dimensional carbon material-based metal nanocomposites using a polarizable organic/water interface

et al. 2015

View full text Add to dashboard Cite

Single wall carbon nanotubes (SWCNTs) and liquid-phase exfoliated multilayer graphene (MLG) material thin films were assembled at a polarizable organic/water interface. A simple, spontaneous route to functionalize/decorate the interfacial assembly of MLG and SWCNTs with noble metal nanoparticles, at the interface between two immiscible electrolyte solutions (ITIES), is reported. The formation of MLG-or SWCNT-based metal nanocomposites was confirmed using various microscopic (scanning electron, transmission electron, and atomic force microscopy) and several spectroscopic (energy dispersive x-ray and Raman spectroscopy) techniques. Increasing the interfacial deposition time of the metal nanoparticles on the assembled low-dimensional carbon material increased the amount of the metal particles/structures, resulting in greater coverage of the MLG or SWCNTs with metal nanoparticles. This low-cost and convenient solution chemistry based impregnation method can serve as a means to prepare nanoscale carbonaceous material-based metal nanocomposites for their potential exploitation as electro-active materials, e.g., new generation catalysts or electrode materials.

show abstract

Exfoliation of Graphene from Graphite and Their Self-Assembly at the Oil−Water Interface

Cited by 88 publications

References 15 publications

Graphene-based nanocomposites for energy storage and conversion in lithium batteries, supercapacitors and fuel cells

Graphene-based nanocomposites for energy storage and conversion in lithium batteries, supercapacitors and fuel cells

A Raman spectroscopic investigation of graphite oxide derived graphene

Preparation of low-dimensional carbon material-based metal nanocomposites using a polarizable organic/water interface

Contact Info

Product

Resources

About