Green and cost-effective synthesis of 2D and 3D graphene-based nanomaterials from Drepanostachyum falcatum for bio-imaging and water purification applications

Tewari, Chetna; Tatrari, Gaurav; Kumar, Sumit; Pandey, Sandeep; Rana, Anita; Pal, Mintu; Sahoo, Nanda Gopal

doi:10.1016/j.ceja.2022.100265

Cited by 26 publications

(7 citation statements)

References 46 publications

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“…Depicting a direct correlation with polymer gel electrolytes enhances the discharging of the device by confining the ions in the polymer matrix. 1–17 Cell 1 displays an energy density of 14.16 W h kg −1 at 3 A g −1 , while for Cell 3 it is 12.50 W h kg −1 , agreeing with both statements viz. continual performance of Cell 2 at all current densities and fast drop in performance of Cell 1 at higher current densities.…”

Section: Electrochemical Performance Testingsupporting

confidence: 75%

“…5 However, metal-doped graphene has wide applicability in electrical energy-storage devices; due to the electron-rich environment, the electronic conductivity within the material becomes easier. [4][5][6][7][8][9][10] In this regard, Tatrari et al described the synthesis of potassium doped-graphene sheets from oak leaves, which showed a Cs value of 18 F g À1 at 5 mV s À1 in a polymer gel electrolyte. 11 However, many other reports are available on synthesizing two-dimensional graphene, but very few reports are available on their mass-scale synthesis utilizing natural and cost-effective precursors.…”

Section: Introductionmentioning

confidence: 99%

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Coconut-husk derived graphene for supercapacitor applications: comparative analysis of polymer gel and aqueous electrolytes

et al. 2023

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Section: Electrochemical Performance Testingsupporting

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Coconut-husk derived graphene for supercapacitor applications: comparative analysis of polymer gel and aqueous electrolytes

et al. 2023

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“…There are a variety of techniques that researchers have studied and employed to produce vast quantities of graphene quantum dots (GQD) and GO sheets. 24,25 However, a limited amount of work has been done to create photoluminescent GO materials that are environmentally safe. The optical characteristics of nanomaterials have been improved by using potassium as a heterodopant.…”

Section: Introductionmentioning

confidence: 99%

“…In this regard, we have developed natural, affordable, and greener processes for the synthesis of GO and its analogs, which have garnered a lot of interest. There are a variety of techniques that researchers have studied and employed to produce vast quantities of graphene quantum dots (GQD) and GO sheets 24,25 . However, a limited amount of work has been done to create photoluminescent GO materials that are environmentally safe.…”

Section: Introductionmentioning

confidence: 99%

Influence of bio‐resource‐derived graphene oxide on the mechanical and thermal properties of poly(vinyl alcohol) nanocomposites

Arya,

Bohra,

Tewari

et al. 2023

Polymer Composites

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The present study reports on an environment‐friendly and economically viable method of synthesizing graphene oxide (GO) using agricultural waste, specifically oak (Quercus ilex) fruit. The agricultural waste‐derived GO (AGO) is further used as a reinforcing filler in the fabrication of poly(vinyl alcohol) (PVA) polymer nanocomposites by employing a solution‐mixing process. A series of characterization methods have been used to assess the interactions between AGO and PVA, including, Raman spectroscopy, FT‐IR, field emission scanning electron microscopy (FESEM), and energy‐dispersive x‐ray (EDX). The thermal and structural properties have been studied by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA)analysis, and a universal testing machine (UTM). The strong H‐bonding interaction between the PVA interface and AGO considerably enhanced interfacial dispersion and adhesion. As a result, the addition of 5 wt% AGO to the PVA polymers significantly improved their mechanical and thermal properties, including tensile strength which rose by 117%, melting temperature (Tm) by 7.02°C, and crystallization temperature (Tc) by 9.06°C. The thermal decomposition temperatures such as T5%, T10% and T50% were increased by 53.68°C, 68.49°C, and 57.37°C, respectively. The results show that a small loading of nanofillers causes substantial increases in the thermal and mechanical properties of PVA, thus making it a promising material for structural applications.

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“…The negative effects on living organisms, including their mode of action are also briefly analyzed. Methods for the preparation and characterization of 2D graphene-based nanomaterials are not given, as they can be found in detail in numerous papers, e.g., [ 7 , 10 , 35 , 78 , 79 , 80 , 81 , 82 ].…”

Section: Introductionmentioning

confidence: 99%

Advances in Biologically Applicable Graphene-Based 2D Nanomaterials

Jampílek

Kráľová

2022

IJMS

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Climate change and increasing contamination of the environment, due to anthropogenic activities, are accompanied with a growing negative impact on human life. Nowadays, humanity is threatened by the increasing incidence of difficult-to-treat cancer and various infectious diseases caused by resistant pathogens, but, on the other hand, ensuring sufficient safe food for balanced human nutrition is threatened by a growing infestation of agriculturally important plants, by various pathogens or by the deteriorating condition of agricultural land. One way to deal with all these undesirable facts is to try to develop technologies and sophisticated materials that could help overcome these negative effects/gloomy prospects. One possibility is to try to use nanotechnology and, within this broad field, to focus also on the study of two-dimensional carbon-based nanomaterials, which have excellent prospects to be used in various economic sectors. In this brief up-to-date overview, attention is paid to recent applications of graphene-based nanomaterials, i.e., graphene, graphene quantum dots, graphene oxide, graphene oxide quantum dots, and reduced graphene oxide. These materials and their various modifications and combinations with other compounds are discussed, regarding their biomedical and agro-ecological applications, i.e., as materials investigated for their antineoplastic and anti-invasive effects, for their effects against various plant pathogens, and as carriers of bioactive agents (drugs, pesticides, fertilizers) as well as materials suitable to be used in theranostics. The negative effects of graphene-based nanomaterials on living organisms, including their mode of action, are analyzed as well.

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Green and cost-effective synthesis of 2D and 3D graphene-based nanomaterials from Drepanostachyum falcatum for bio-imaging and water purification applications

Cited by 26 publications

References 46 publications

Coconut-husk derived graphene for supercapacitor applications: comparative analysis of polymer gel and aqueous electrolytes

Coconut-husk derived graphene for supercapacitor applications: comparative analysis of polymer gel and aqueous electrolytes

Influence of bio‐resource‐derived graphene oxide on the mechanical and thermal properties of poly(vinyl alcohol) nanocomposites

Advances in Biologically Applicable Graphene-Based 2D Nanomaterials

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