Thermally reduced graphene oxide: synthesis, studies and characterization

Oliveira, Ana Elisa Ferreira; Bettio, Guilherme Braga; Tarley, César Ricardo Teixeira; Pereira, Arnaldo César

doi:10.1007/s10853-018-2473-3

Cited by 137 publications

(67 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It may be observed that every peak from the variation of temperature does not shift, but the reflectance decreases with increasing temperature. The intensity ratio of the D-band (I D ) and G-band (I G ) indicates the quality of the produced graphitic structure [10]. The variation in temperature does not change the D and G values significantly.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Synthesis of reduced graphene oxide based on thermally modified liquid-phase exfoliation

Pratama

Dwandaru

2020

Nano Ex.

View full text Add to dashboard Cite

We report a modification of the liquid-phase exfoliation (LPE) method in order to produce reduced graphene oxide (rGO) material by varying the heating temperature. The rGO was obtained by dissolving graphite powder into a surfactant solution and then heated by varying the heating temperature. There is an intercalation process on the graphene layers as the heating temperature was increased. The rGO material were tested using UV-vis, FTIR, Raman spectroscopies, and conductivity measurement based on Ohm principles.

show abstract

Section: Resultsmentioning

confidence: 99%

“…However, chemical oxidation disrupts the electronic structure of graphite and introduce many carbonyl (-C=O), hydroxyl (-OH) and epoxy functional groups in the sheets. This reduction may leave defects that affect the electronic properties of graphene [10].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of reduced graphene oxide based on thermally modified liquid-phase exfoliation

Pratama

Dwandaru

2020

Nano Ex.

View full text Add to dashboard Cite

show abstract

“…The graphene oxide (GO) was synthesized based on previous works published [14]. The dispersion of GO was prepared in ethanol and Nafion 5% v/v.…”

Section: Electroreduction Of Graphene Oxidementioning

confidence: 99%

“…The GO consists of a graphene sheet, a carbon structure consisting of sp 2 bonds, which has these connections transformed into sp 3 bonds by the substitutes groups, which removes its conductive characteristic. The reduction process causes this material to lose some functional groups and return to conductive characteristics and maintain the interaction from the functional groups [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

An Electrochemical Sensor Based on Electroreduction of Graphene Oxide on a Glassy Carbon Electrode Using Multiple Pulse Amperometry for Simultaneous Determination of L-Dopa and Benserazide

Barbosa¹,

Oliveira²,

Pereira³

2020

Graphene Production and Application

View full text Add to dashboard Cite

In this work, we described the development an electrochemical sensor based on electroreduction of graphene oxide (rGO) on a glassy carbon electrode (GCE) for simultaneous determination of l-Dopa and benserazide. For the elaboration of the GCE/rGO, the developed methodology was based on the electrochemical technique: multiple pulse amperometry (MPA). The MPA was more stable and efficient for the formation of rGO film, under optimum conditions (pH 6.00; concentration of rGO 2.00 mg mL −1 ; time 450 s; potentials −0.60, −0.70, −0.80, −0.90, −0.95, −1.00, −1.10, −1.20, and -1.30 V). After the film was formed, the cyclic voltammetry was used to detect LD and BZ in real samples and optimized conditions 0.05 mol L −1 PBS (pH 5.50). The linear range for the LD is 25-425 μmol L −1 and the BZ of 5-80 μmol L −1 . The limit of detection calculated was 17.10 (LD) and 2.99 (BZ) μmol L −1 .

show abstract

“…O Óxido de Grafeno (GO) foi preparado usando o método de Hummers 12 modificado partindo do pó de grafite como reportado previamente. 13 Em um recipiente misturou-se 0,5 g de pó de grafite, 0,5 g de NaNO3 e 23 mL de H2SO4. Essa mistura foi mantida sob agitação em banho de gelo por 4 horas, sempre mantendo a temperatura abaixo de 20 °C.…”

Section: Síntese Do óXido De Grafenounclassified

Synthesis, Studies and Structural characterization of Thermal and Hydrazine Reduction of Graphene Oxide by Raman Spectroscopy and Infrared Spectroscopy

Oliveira¹,

Pereira²,

Bettio³

et al. 2019

Rev. Virtual Quim

View full text Add to dashboard Cite

The intention of this manuscript is discusses in detail and didactic about the thermal and hydrazine reduction of graphene oxide (GO). The obtain materials were called thermally reduced graphene oxide (rGO-T) and reduced graphene oxide by hydrazine (rGO-HZ). The mechanism involved in both reduction methods were studied. The materials were synthesized and characterized by Raman and Infrared Spectroscopy. The Raman and Infrared spectra were discussed in detail. The bands on rGO spectra using both methods exhibit low intensities compared to GO because of the increased crystallinity related to the deoxygenation of the structure and the decrease of sp 3 carbons. The FTIR also exhibits a lower band intensity compared to GO, because the reduction partially removes the oxygenated groups, so the bands referring to the functional groups decrease in intensity. Therefore, the structural characterization showed that the reduction of GO to rGO were successfully performed.

show abstract

Thermally reduced graphene oxide: synthesis, studies and characterization

Cited by 137 publications

References 40 publications

Synthesis of reduced graphene oxide based on thermally modified liquid-phase exfoliation

Synthesis of reduced graphene oxide based on thermally modified liquid-phase exfoliation

An Electrochemical Sensor Based on Electroreduction of Graphene Oxide on a Glassy Carbon Electrode Using Multiple Pulse Amperometry for Simultaneous Determination of L-Dopa and Benserazide

Synthesis, Studies and Structural characterization of Thermal and Hydrazine Reduction of Graphene Oxide by Raman Spectroscopy and Infrared Spectroscopy

Contact Info

Product

Resources

About