Evolution of graphene oxide (GO)-based nanohybrid materials with diverse compositions: an overview

Majumder, Pampi; Gangopadhyay, Rupali

doi:10.1039/d1ra06731a

Cited by 34 publications

(8 citation statements)

References 263 publications

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“…The corresponding calculated band gap energies are 2.8 eV for 0.07 M and 2.9 eV for 0.1 M. These two values are greater than the value for bulk CuO (E g = 1.2 eV). 51 It has been shown that PVP tends to be well-adsorbed onto the surface of metal oxide nanoparticles via H-bonding with an acid-base interaction 52 (Fig. 5).…”

Section: Resultsmentioning

confidence: 99%

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Catalytic performance of PVP-coated CuO nanosheets under environmentally friendly conditions

2023

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Section: Resultsmentioning

confidence: 99%

“…The corresponding calculated band gap energies are 2.8 eV for 0.07 M and 2.9 eV for 0.1 M. These two values are greater than the value for bulk CuO ( E g = 1.2 eV). 51…”

Section: Resultsmentioning

confidence: 99%

Catalytic performance of PVP-coated CuO nanosheets under environmentally friendly conditions

2023

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“…GO contains several oxygen-rich functional groups (carboxylic acid, hydroxyl and epoxide groups), making this lamellar 2D structure hydrophilic, easily compliable to surface modifications, exhibit better permeability, and have good dispersibility in a variety of solvents [ 222 , 225 ] Due to this oxidation, GO becomes insulative, having poor thermal conductivity compared to graphene. Hydrophobicity, electrical, and thermal conductivity is partially restored by reducing GO as rGO [ 226 ]. Each of these forms of graphene is unique and has been extensively investigated for water and wastewater treatment.…”

Section: Incorporation Of Nps In Tfncs/mmmsmentioning

confidence: 99%

Advanced Polymeric Nanocomposite Membranes for Water and Wastewater Treatment: A Comprehensive Review

Sahu¹,

Dosi

Kwiatkowski

et al. 2023

Polymers

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Nanomaterials have been extensively used in polymer nanocomposite membranes due to the inclusion of unique features that enhance water and wastewater treatment performance. Compared to the pristine membranes, the incorporation of nanomodifiers not only improves membrane performance (water permeability, salt rejection, contaminant removal, selectivity), but also the intrinsic properties (hydrophilicity, porosity, antifouling properties, antimicrobial properties, mechanical, thermal, and chemical stability) of these membranes. This review focuses on applications of different types of nanomaterials: zero-dimensional (metal/metal oxide nanoparticles), one-dimensional (carbon nanotubes), two-dimensional (graphene and associated structures), and three-dimensional (zeolites and associated frameworks) nanomaterials combined with polymers towards novel polymeric nanocomposites for water and wastewater treatment applications. This review will show that combinations of nanomaterials and polymers impart enhanced features into the pristine membrane; however, the underlying issues associated with the modification processes and environmental impact of these membranes are less obvious. This review also highlights the utility of computational methods toward understanding the structural and functional properties of the membranes. Here, we highlight the fabrication methods, advantages, challenges, environmental impact, and future scope of these advanced polymeric nanocomposite membrane based systems for water and wastewater treatment applications.

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“…The reduced form of DPPH could be created when it is mixed with a material or a nanomaterial either metallic or graphene-based materials that can give a hydrogen atom (antioxidant) which reflect an effective role against DPPH. This was demonstrated by the removal of the characteristic violet color (Flieger et al 2021;Majumder and Gangopadhyay 2022).…”

Section: Antioxidant Studymentioning

confidence: 99%

Biogenic synthesis of reduced graphene oxide from Ziziphus spina-christi (Christ’s thorn jujube) extracts for catalytic, antimicrobial, and antioxidant potentialities

Mahmoud

El-Maghrabi

Hosny

et al. 2022

Environ Sci Pollut Res

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In the current work, various concentrations of the aqueous extract of Ziziphus spina-christi were employed for the phytoreduction of graphene oxide (GO). The green synthesized reduced graphene oxide (rGO) was characterized through UV-Vis spectrometry, Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy, and energy-dispersive X-ray spectroscopy (SEM-EDX). Gas chromatography-mass spectrometry (GC-MS) denoted the presence of numerous phytoconstituents including ketones, terpenoids, fatty acids, esters, and flavonoids, which acted as reducing and capping agents. The obtained results indicated the increase in rGO yield and shape with increasing the extract concentration. The optimized rGO was instantaneously ~100% removed methylene blue (MB) from the water at 5 mg L−1. However, the removal efficiency was slightly declined to reach 73.55 and 65.1% at 10 and 15 mg L−1, respectively. A powerful antibacterial activity for rGO particularly against gram-negative bacteria with a high concentration of 2 × 108 CFU mL−1 was confirmed. Furthermore, rGO demonstrated promising and comparable antioxidant efficiency with vitamin C against DPPH free radical scavenging. While vitamin C recorded 13.45 and 48.4%, the optimized rGO attained 13.30 and 45.20% at 12 and 50 μg mL−1, respectively.

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Evolution of graphene oxide (GO)-based nanohybrid materials with diverse compositions: an overview

Abstract: GO undergoes synergistic interaction with MO nanoparticles and the hybrid can be used as a heterogeneous catalyst for the photocatalytic degradation of dyes.

Cited by 34 publications

References 263 publications

Catalytic performance of PVP-coated CuO nanosheets under environmentally friendly conditions

Catalytic performance of PVP-coated CuO nanosheets under environmentally friendly conditions

Advanced Polymeric Nanocomposite Membranes for Water and Wastewater Treatment: A Comprehensive Review

Biogenic synthesis of reduced graphene oxide from Ziziphus spina-christi (Christ’s thorn jujube) extracts for catalytic, antimicrobial, and antioxidant potentialities

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