Graphene Oxide Synthesis from Agro Waste

Somanathan, T.; Prasad, Karthika; Ostrikov, Kostya Ken; Saravanan, A.; Krishna, Vemula Mohana

doi:10.3390/nano5020826

Cited by 202 publications

(101 citation statements)

References 37 publications

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“…Laccases immobilized onto different solid supports have found wide application in many industrial branches, e.g., biosensor construction [4,14,15] or pollutants removal [16][17][18]. GO was firstly synthesized by Brodie in 1859 as a result of chemical oxidation of graphite using potassium chlorite and fuming nitric acid [19] and has been widely applied for the deposition of the bio-recognition layer in construction of biosensing systems. GO is a semi-aromatic, two-dimensional sheet of carbon rings with oxygen functional groups, i.e., hydroxyl, epoxy, carbonyl and carboxyl [20], with carbon-to-oxygen ratio approximately 3:1 [21].…”

Section: Introductionmentioning

confidence: 99%

Theoretical insight into plasma deposition of laccase bio-coating formation

Malinowski

Jaroszyńska-Wolińska

Herbert³

2019

J Mater Sci

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Development of new techniques for deposition of biologically active coatings in the form of bio-recognition layers in biosensor construction is a current technological challenge. Biosensors are widely applied in environmental protection in determination of hazardous materials, e.g., catechol, hydrochinon or resorcinol. Application of a soft plasma polymerization (SPP) technique by lowenergy-density corona discharge has allowed significant simplification of the deposition process of bio-recognition layers. However, the mechanism of the SPP process is by no means fully understood. This paper presents insights into the mechanism of binding laccase enzyme onto graphene oxide (GO) and multiwalled carbon nanotubes (MWCNT) through analysis carried out by density functional theory (DFT) methods and Fourier transform infrared spectroscopy (FTIR). The objective was to examine the mechanism on the basis of binding energies and electrostatic interactions between laccase and carbon nanomaterials as well as enzyme structure after cold plasma deposition. The lowest binding energies have been calculated for the ON bond between the arginine amino acid of laccase and the hydroxyl group of GO and the CO bond between the serine molecule of laccase and the carboxyl groups of GO and MWCNT. FTIR and DFT studies showed that the chemical structures of the laccase enzyme and carbon nanomaterials after corona jet plasma treatment are not substantially changed. Preliminary recognition of the mechanism of biosensing layer deposition by the SPP technique opens the way to application of this innovative technique to the construction of other biosensors such as for determination of pollutants in water samples.

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Section: Introductionmentioning

confidence: 99%

Theoretical insight into plasma deposition of laccase bio-coating formation

Malinowski

Jaroszyńska-Wolińska

Herbert³

2019

J Mater Sci

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“…The diffraction angle 2θ at 10.94° (Figure 3a) demonstrated the successful synthesis of GO [34][35] . The diffraction angle 2θ at 10.94° (Figure 3a) demonstrated the successful synthesis of GO [34][35] .…”

Section: Characterization Of Gomentioning

confidence: 97%

Amino-functionalized silica-encapsulated Mn/ZnS quantum dots for the room-temperature phosphorescence determination of graphene oxide in environmental water samples

Zhong

Wang

et al. 2015

Anal. Methods

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ARTICLE This journal isWe developed a simple and sensitive room-temperature phosphorescence (RTP) method for the determination of graphene oxide (GO) in environmental water samples using aminofunctionalized silica-encapsulated Mn/ZnS Quantum Dots (Mn/ZnS@SiO 2 -NH 2 ) as a phosphorescence probe. The maximum phosphorescence excitation and emission wavelength of synthesized Mn/ZnS@SiO 2 -NH 2 nanoparticles were 320 nm and 595 nm. The RTP intensity of Mn/ZnS@SiO 2 -NH 2 nanoparticles could be quenched in the presence of GO with a detection limit as low as 1.0 mg·L -1 . Good linear correlations were obtained over the concentration range from 0 to 10.0 mg·L -1 with a correlation coefficient of 0.9987, 10.0 to 25.0 mg·L -1 with a correlation coefficient of 0.9979. The phosphorescence quenching mechanism was also discussed. This method was successfully applied to the determination of GO in environmental water samples which presages more opportunities for application in biological and environmental systems.

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“…Nowadays, the synthesis of graphene oxide relies mostly on the use of graphite precursor and the most common procedure in practice is the Hummers method [12]. However the development of graphene oxide from a non-graphitic carbonaceous material is still in infancy and the chemistry behind it is still not clearly understood [13,14]. In this paper, the synthesis of graphene oxide has been reported using non graphitized agro waste materials which produced graphene oxide at the mass level.…”

Section: Introductionmentioning

confidence: 99%

Graphene oxide nanoflakes from various agrowastes

Naik

Debbarma

Saha

et al. 2020

Materialwissenschaft Werkst

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Nowadays, the synthesis of graphene/ graphene oxide from graphite precursor using oxidizing agents is the most common procedure, but the direct synthesis of graphene or graphene oxide from a non‐graphitic carbonaceous material without using inert atmosphere is really a great challenge. Besides, the chemistry behind the development of graphitic structure from a non‐graphitic material during the thermal heating is still not clearly understood. In this research work, three agrowaste materials viz. rice husk, sugarcane bagasse and newspaper were selected and subjected to pyrolysis in presence of trace amount of air. The continued heating at the optimum temperature has resulted in aromatization and condensation along with the oxidation within the cellulosic structure of the agrowaste, which finally resulted in the formation of graphene oxide nanoflakes directly. The mechanism of formation of graphene oxide from these agrowaste materials was studied, which suggested that any carbonaceous waste materials can be converted to graphene oxide by optimizing the thermal heating conditions.

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Graphene Oxide Synthesis from Agro Waste

Cited by 202 publications

References 37 publications

Theoretical insight into plasma deposition of laccase bio-coating formation

Theoretical insight into plasma deposition of laccase bio-coating formation

Amino-functionalized silica-encapsulated Mn/ZnS quantum dots for the room-temperature phosphorescence determination of graphene oxide in environmental water samples

Graphene oxide nanoflakes from various agrowastes

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