Preparation and physicochemical and electrochemical characterization of exfoliated graphite oxide

Palanisamy, R.; Bhagyalakshmi, S; Sampath, S.

doi:10.1016/j.jcis.2003.11.030

Cited by 147 publications

(91 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Using X-ray diffraction (XRD), the degree of oxidation of graphite and the interlayer spacing can be obtained. With graphite being oxidized to graphite oxide, the sharp reflection of graphite at 2θ = 25~30° disappears, and a new peak at 2θ = 10~15° that corresponds to graphite oxide appears [28]. McAllister [29] reported XRD patterns of graphite oxide prepared by the Staudenmaier method for various lengths of oxidized time, suggesting that the reaction process can be monitored by using XRD.…”

Section: Characterization Of Gomentioning

confidence: 99%

“…The native sharp peak of graphite is at 2θ ~26°, and the graphene layer spacing d is about 0.34 nm. In general, the GO interlayer spacing d in graphite oxide is around 0.6-1.0 nm depending on the degree of oxidation of graphite and the amount of water molecules intercalated into the interlayer spacing [28]. Multi-mode atomic force microscopy (AFM) is the foremost method to quantify the thickness of GO sheets.…”

Section: Characterization Of Gomentioning

confidence: 99%

See 1 more Smart Citation

The Preparation of Graphene Oxide and Its Derivatives and Their Application in Bio-Tribological Systems

et al. 2014

View full text Add to dashboard Cite

Graphene oxide (GO) can be readily modified for particular applications due to the existence of abundant oxygen-containing functional groups. Graphene oxide-based materials (GOBMs), which are biocompatible and hydrophilic, have wide potential applications in biomedical engineering and biotechnology. In this review, the preparation and characterization of GO and its derivatives are discussed at first. Subsequently, the biocompatibility and tribological behavior of GOBMs are reviewed. Finally, the applications of GOBMs as lubricants in bio-tribological systems are discussed in detail.

show abstract

Section: Characterization Of Gomentioning

confidence: 99%

Section: Characterization Of Gomentioning

confidence: 99%

The Preparation of Graphene Oxide and Its Derivatives and Their Application in Bio-Tribological Systems

et al. 2014

View full text Add to dashboard Cite

show abstract

“…The GO is a layered solid with water molecules between the layers. It is also considered to be covalently intercalated compound [32].…”

Section: Introductionmentioning

confidence: 99%

Exfoliated Graphite Oxide Modified Electrode for the Selective Determination of Picomolar Concentration of Lead

Ramesha¹,

Sampath²

2007

Electroanalysis

View full text Add to dashboard Cite

We report the selective, picomolar determination of lead(II) ions using exfoliated graphite oxide (EGO) modified glassy carbon electrode. Exfoliated graphite oxide is the oxidized form of exfoliated graphite containing a variety of functional groups such as hydroxyl, phenolic and carboxyl groups. The EGO can be dispersed as a stable colloid in a wide range of pH, from 2 to 11. This leads to the flexibility of film formation on substrates and use of a variety of functional groups to complex lead ions. The analyte is preconcentrated and subsequently determined using differential pulse anodic stripping voltammetry. The factors influencing the determination of lead such as the pH of the analyte solution, preconcentration time and the thickness of EGO layer on the electrode surface have been optimized. Two linear ranges are observed between 1 mM and 10 mm and 0.1 mM and 1 pM for a 5 minute preconcentration time. The lowest detection limit is found to be 1 pM. The main advantages of the electrode are the ease of preparation of the modified electrode, low cost, sensitivity and selectivity. The analytical utility of the EGO modified electrode in the determination of lead is demonstrated by application to several water samples.

show abstract

“…17 The preparation of the ZnFe 2 O 4 @CS/GO composite is illustrated in Scheme 1. For the preparation of ZnFe 2 O 4 , 0.52 g of ZnCl 2 and 1.0 g of FeCl 3 were dissolved in 25 mL of ultrapure water, and 5 mL of ammonia solution was added dropwise into the solution under vigorous stirring.…”

Section: Synthesis Of Znfe 2 O 4 @Cs/go Compositesmentioning

confidence: 99%

Magnetic ZnFe₂O₄@chitosan encapsulated in graphene oxide for adsorptive removal of organic dye

Xiao

Zhong

et al. 2017

RSC Adv.

View full text Add to dashboard Cite

Graphene-based multifunctional composites were prepared by encapsulating of magnetic ZnFe 2 O 4 @chitosan (ZnFe 2 O 4 @CS) particles into graphene oxide (GO) layers. The obtained ZnFe 2 O 4 @CS/ GO were characterized using scanning electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. Adsorption of basic fuchsin (BF) onto the ZnFe 2 O 4 @CS/GO was investigated using pH, adsorption time, initial BF concentration and temperature.Kinetic data and adsorption isotherms were better fitted by a pseudo-second-order kinetic model and

show abstract

Preparation and physicochemical and electrochemical characterization of exfoliated graphite oxide

Cited by 147 publications

References 53 publications

The Preparation of Graphene Oxide and Its Derivatives and Their Application in Bio-Tribological Systems

The Preparation of Graphene Oxide and Its Derivatives and Their Application in Bio-Tribological Systems

Exfoliated Graphite Oxide Modified Electrode for the Selective Determination of Picomolar Concentration of Lead

Magnetic ZnFe₂O₄@chitosan encapsulated in graphene oxide for adsorptive removal of organic dye

Contact Info

Product

Resources

About

Preparation and physicochemical and electrochemical characterization of exfoliated graphite oxide

Cited by 147 publications

References 53 publications

The Preparation of Graphene Oxide and Its Derivatives and Their Application in Bio-Tribological Systems

The Preparation of Graphene Oxide and Its Derivatives and Their Application in Bio-Tribological Systems

Exfoliated Graphite Oxide Modified Electrode for the Selective Determination of Picomolar Concentration of Lead

Magnetic ZnFe2O4@chitosan encapsulated in graphene oxide for adsorptive removal of organic dye

Contact Info

Product

Resources

About

Magnetic ZnFe₂O₄@chitosan encapsulated in graphene oxide for adsorptive removal of organic dye