Novel Green Synthesis of Graphene Layers using Zante Currants and Graphene Oxide

Ansari, Mohd Zaid; Lone, Mohammad Nadeem; Sajid, Shabana; Siddiqui, Waseem Ahmad

doi:10.13005/ojc/340621

Cited by 14 publications

(5 citation statements)

References 36 publications

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“…In FTIR spectrum, GO shows peaks at 1131 (C-O stretching), 1361(-OH bending), 1569 (C-C bond), 1710 (C=O group), 2355 (C=C bond), 3344 cm −1 (-OH stretching). But in RGO, concealment of C-O-C, C=O groups, quite existence of C-C and C=C bonds and peak at 3718 cm −1 (absorbed water) [52][53][54] indicate the formation of RGO sample. This indicates the disappearance of mostly oxygenated groups from the GO surface and formation of RGO by using carambola fruit extract.…”

Section: Characterisations Of Rgomentioning

confidence: 99%

Adsorption kinetics, isotherm and thermodynamics studies for the removal of cationic dyes from environmental wastewater by reduced graphene oxide adsorbent synthesized via greener way

Bairy¹,

Das²,

Tantubay³

et al. 2023

Adv. Nat. Sci: Nanosci. Nanotechnol.

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Synthetic dyes emerging from wastewater effluents result in a hazardous environment to our society, hence removal of these dye molecules from the water bodies is necessary due to their toxic nature for living beings. In our study, a straightforward one pot synthetic process is conducted to synthesize reduced graphene oxide (RGO) using Averrhoa carambola fruit extract. To confirm the formation of RGO, different characterization techniques such as Fourier transform infrared spectroscopy (FTIR), UV–Vis spectroscopy and X-Ray Diffraction (XRD) are investigated. Transmission electron microscopy (TEM) and scanning electron microscopy (SEM) are used to understand the morphology of RGO. Adsorption kinetics for pseudo-first order and pseudo-second order has been carried out for both dyes. Freundlich and Langmuir adsorption isotherm models were confirmed to describe each of the adsorption ability responses with high correlation coefficients. Maximum adsorption capacities of methylene blue (MB) and crystal violet (CV) on RGO were 52.308 mg g−1 and 31.466 mg g−1 respectively. The adsorption ability of this adsorbent is monitored by recyclability in five subsequent cycles and it is observed that up to 5 cycles, there is no significant decrease in adsorption capability. The present study showed that RGO is highly efficient in removing MB and CV dyes from environmental water bodies. The thermodynamics study for the adsorption phenomena of MB and CV dyes on RGO sheet has been investigated.

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Section: Characterisations Of Rgomentioning

confidence: 99%

Adsorption kinetics, isotherm and thermodynamics studies for the removal of cationic dyes from environmental wastewater by reduced graphene oxide adsorbent synthesized via greener way

Bairy¹,

Das²,

Tantubay³

et al. 2023

Adv. Nat. Sci: Nanosci. Nanotechnol.

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“…Adjusting the reaction solution pH with diluted sodium hydroxide (NaOH), hydrochloric acid (HCl), or ammonium hydroxide (NH 4 OH) was also critical, as the reduction can occur in both acidic and alkaline environments [113]. Thus, based on a review of research on green reduction using plant extracts, the solution pH was primarily regulated using NH 4 OH [44,45,50,61,65,76,77,80,81,95,99]. Bosch and colleagues demonstrated the effect of various pH values on the final production of GO sheets.…”

Section: The Synthesis Of Rgomentioning

confidence: 99%

Green Reduction of Graphene Oxide Involving Extracts of Plants from Different Taxonomy Groups

2022

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Graphene, a remarkable material, is ideal for numerous applications due to its thin and lightweight design. The synthesis of high-quality graphene in a cost-effective and environmentally friendly manner continues to be a significant challenge. Chemical reduction is considered the most advantageous method for preparing reduced graphene oxide (rGO). However, this process necessitates the use of toxic and harmful substances, which can have a detrimental effect on the environment and human health. Thus, to accomplish the objective, the green synthesis principle has prompted researchers worldwide to develop a simple method for the green reduction of graphene oxide (GO), which is readily accessible, sustainable, economical, renewable, and environmentally friendly. For example, the use of natural materials such as plants is generally considered safe. Furthermore, plants contain reducing and capping agents. The current review focuses on the discovery and application of rGO synthesis using extracts from different plant parts. The review aims to aid current and future researchers in searching for a novel plant extract that acts as a reductant in the green synthesis of rGO, as well as its potential application in a variety of industries.

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“…Mallikarjuna and co-authors used Coleus amboinicus (a semi-succulent perennial herbaceous plant with different nutritional and therapeutic properties belonging to the Lamiaceae family) extract as a bio-reducing agent to convert graphite-derived GO to RGO [63]. Various other green-reducing agents are also used to convert (graphitederived) GO to RGO (or graphene), such as green tea extract [64], Zante currants (one of the oldest known resins) [65], Phyllanthus Emblica (Indian Gooseberry) extract [66], Citrullus colocynthis leaf extract [67], Syzgium cumini (Jambul or black plum) seed [68], Tridax procumbens (a species of flowering plant in the daisy family) leaf extract [69], Urtica Dioica (a herbaceous perennial flowering plant) extracts [70], Opuntia ficus-indica (a species of cactus) extract [71], Glucose [72], Punica granatum (pomegranate) juice [73], Shikimic acid (an organic compound existing naturally in assorted plants) [74] among others. In most of the above cases, GO and the non-toxic reducing agents are stirred or sonicated to produce RGO or graphene.…”

Section: Green-chemical Reduction Of Graphene Oxidementioning

confidence: 99%

Green syntheses of graphene and its applications in internet of things (IoT)—a status review

Banerjee¹

2022

Nanotechnology

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Internet of Things (IoT) is a trending technological field that converts any physical object into a communicable smarter one by converging the physical world with the digital world. This innovative technology connects the device to the internet and provides a platform to collect real-time data, cloud storage, and analyze the collected data to trigger smart actions from a remote location via remote notifications etc. Because of its wide-ranging applications, this technology can be integrated into almost all the industries. Another trending field with tremendous opportunities is Nanotechnology, which provides many benefits in several areas of life, and helps to improve many technological and industrial sectors. So, integration of IoT and Nanotechnology can bring about the very important field of Internet of Nanothings (IoNT), which can re-shape the communication industry. For that, data (collected from trillions of nanosensors, connected to billions of devices) would be the ‘ultimate truth’, which could be generated from highly efficient nanosensors, fabricated from various novel nanomaterials, one of which is graphene, the so-called ‘wonder material’ of the 21st century. Therefore, graphene-assisted IoT/IoNT platforms may revolutionize the communication technologies around the globe. In this article, a status review of the smart applications of graphene in the IoT sector is presented. Firstly, various green synthesis of graphene for sustainable development is elucidated, followed by its applications in various nanosensors, detectors, actuators, and memory and nano-communication devices. Also, the future market prospects are discussed to converge various emerging concepts like machine learning, fog/edge computing, artificial intelligence, big data, blockchain, with the graphene-assisted IoT field to bring about the concept of ‘all-round connectivity in every sphere possible.

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Novel Green Synthesis of Graphene Layers using Zante Currants and Graphene Oxide

Cited by 14 publications

References 36 publications

Adsorption kinetics, isotherm and thermodynamics studies for the removal of cationic dyes from environmental wastewater by reduced graphene oxide adsorbent synthesized via greener way

Adsorption kinetics, isotherm and thermodynamics studies for the removal of cationic dyes from environmental wastewater by reduced graphene oxide adsorbent synthesized via greener way

Green Reduction of Graphene Oxide Involving Extracts of Plants from Different Taxonomy Groups

Green syntheses of graphene and its applications in internet of things (IoT)—a status review

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