Graphene-based materials prepared by supercritical fluid technology and its application in energy storage

Liu, Zhiyuan; Navik, Rahul; Tan, Hunjun; Xiang, Qixuan; Diono, Wahyu; Goto, Motonobu; Ibarra, Rodolfo Morales; Zhao, Yaping

doi:10.1016/j.supflu.2022.105672

Cited by 24 publications

(3 citation statements)

References 176 publications

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“…Therefore, the device must operate at optimum time and optimum power. In fact, with optimal time and power, the number of layers and the lateral sizes of the graphene layers can be controlled so that the number of layers and the size of the obtained graphene reach their lowest value [46]. In this study, the optimal time and power of ultrasonic operation were determined to be 120 min and 240 W, respectively.…”

Section: (A) (B)mentioning

confidence: 99%

Investigating The Effect of Various Parameters on The Yield of Graphene Obtained Through Graphite Exfoliation Using CO2 Supercritical Fluid

Saeedi,

Sargolzaei

2023

ETJ

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Conventional methodsof graphene production are time-consuming and expensive.• The parameters affecting the extraction of graphene from graphite were investigated using Supercritical CO2. • Additives used in the synthesis process have the role of deactivating the surface. • The test design was done with "Design Expert" software and then tested in the laboratory.• The software results were in high agreement with the laboratory results, and mono/bilayer graphene was obtained.Due to its high penetration force and low viscosity, the Supercritical carbon dioxide (scCO2) can spread between the graphite layers, overcome van der Waals forces, and transform graphite into multilayer graphene. The results of the test plan with the Design Expert software and also the use of these results in the laboratory showed that the parameters of temperature, pressure, initial amount of graphite, addition of surfactant and solvent auxiliary, the duration of sample placement in the device, the duration of carbon dioxide gas release from the device, and the time and power of ultrasonic and centrifuge operations can accelerate the exfoliation process. The resulting graphene was characterized by TEM, RAMAN, XRD, and AFM techniques. Based on the obtained results, it was found that mono/bilayer graphene was obtained by applying optimum conditions. The results confirmed the formation of mono/bilayer graphene based on the G-Band of 1583 cm -1 in the Raman test, a wavelength of 26.44° in the XRD test, and a thickness of 1.5 nm in the AFM test. With a simple, low-cost approach, this method, without using toxic and expensive chemicals with high profitability, can replace other complex graphene production methods, such as chemical vapor leakage and plasma etching, and be chemically reduced..

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Section: (A) (B)mentioning

confidence: 99%

Investigating The Effect of Various Parameters on The Yield of Graphene Obtained Through Graphite Exfoliation Using CO2 Supercritical Fluid

Saeedi,

Sargolzaei

2023

ETJ

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“…Thus, their study gave insight into the eco-friendly and low-cost method for hydrogen storage and graphane production [43]. Due to their amazing properties, graphene and its derivatives show promising potential in high-frequency devices [45][46][47], electronics [48][49][50], biochemical and medical sensors, photodetectors [51][52][53][54][55], and energy storage devices [56][57][58]. Additionally, they are known for increasing the lifespan of batteries.…”

Section: Graphene Oxidementioning

confidence: 99%

A Review on Properties and Environmental Applications of Graphene and Its Derivative-Based Composites

et al. 2023

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Graphene-based materials have gained a lot of scientific interest in the research era of modern technology, which can be quite flexible. Graphene has become popular as a potential material for the manufacture of a wide range of technologies due to its remarkable electrical, mechanical, and optical traits. Due to these excellent characteristics, the derivatives of graphene can be functionalized in various applications including environmental, medical, electronic, defence applications, and many more. In this review paper, we discussed the different synthesis methods for the extraction of graphene and its derivatives. The different traits of graphene and its derivatives such as structural, mechanical, and optical were also discussed. An extensive literature review on the application of graphene-based composites is presented in this work. We also outlined graphene’s potential in the realm of environmental purification through different techniques such as filtration, adsorption, and photocatalysis. Lastly, the challenges and opportunities of graphene and its derivatives for advanced environmental applications were reported.

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“…They are classified based on different criteria like sheets layered nanostructures, films, nano-patterned surfaces, and coatings [1]. Graphene [2,3], graphene oxide (GO) [4], Mxenes [5], silicate clays [6], hydroxides, and layered double hydroxides (LDHs) [7], [8], some of transition metal chalcogenides [9][10][11], some of transition metal oxides (TMOs) or mixed metal oxide (MMO) [12,13], black phosphorus nanosheets (BPN), Boron and boron nitride nanosheet, antimonene (AM) and antimonene oxide nanosheet [14] are sheet-like layered nanostructures possess excellent physical, mechanical, chemical and biochemical properties due to structures, high surface area and surface charge. In order to obtain new physicochemical properties in nanomaterials, new 2D nanomaterials are currently being synthesized in science, or modification of known nanostructures is being carried out.…”

Section: Introductionmentioning

confidence: 99%

SYNTHESIS OF DIFFERENT METAL DOPED ZnAl-LDH/PVA NANOCOMPOSITES FOR ADSORPTION AND PHOTOCATALYTIC APPLICATIONS

Balayeva

2022

jour

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Due to their high surface area, electronic properties, energy storage performance and catalytic activity, two-dimensional (2D) nanostructures have attracted significant interest and great attention in developing science. Layered double hydroxides (LDHs) belong to 2D nanostructures and have a high surface area, very important physicochemical properties, and biological activity. However, there has always been great interest in their doping to enhance and improve these unique properties, especially photocatalytic activity. In this work, ZnAl-based LDHs were synthesized and their doping with active- (Ca, Sr), transition- (Co, Cu, Cd, Ni, Pb, Fe), noble- (Ag) and rare earth- (La) metals were carried out by impregnation method. The removal of cationic and anionic dyes from aqueous solutions by adsorption and photodegradation on as-synthesized and doped ZnAl-LDH/PVA nanocomposite was also studied. The obtained results were correlated with the structure and physicochemical properties of the nanocomposites.

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Graphene-based materials prepared by supercritical fluid technology and its application in energy storage

Cited by 24 publications

References 176 publications

Investigating The Effect of Various Parameters on The Yield of Graphene Obtained Through Graphite Exfoliation Using CO2 Supercritical Fluid

Investigating The Effect of Various Parameters on The Yield of Graphene Obtained Through Graphite Exfoliation Using CO2 Supercritical Fluid

A Review on Properties and Environmental Applications of Graphene and Its Derivative-Based Composites

SYNTHESIS OF DIFFERENT METAL DOPED ZnAl-LDH/PVA NANOCOMPOSITES FOR ADSORPTION AND PHOTOCATALYTIC APPLICATIONS

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