Efficient dye removal and separation based on graphene oxide nanomaterials

Mao, Brennan; Boopathi, S.; Thiruppathi, Antony Raj; Wood, Peter C.; Chen, Aicheng

doi:10.1039/c9nj05895h

Cited by 84 publications

(28 citation statements)

References 40 publications

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“…In addition, the oxygenated functional groups could be effective at potential adsorption [45]. Furthermore, heteroatom-doped graphene shows an improved adsorption performance due to the surface modification [46,47]. As displayed in Figure 9, the synthesized NBG demonstrated 44.1% dye removal in dark conditions, while the NPBG exhibited a higher removal percentage of dye (60.2%) due to its higher surface area.…”

Section: Photocatalytic Studymentioning

confidence: 98%

A Novel N-Doped Nanoporous Bio-Graphene Synthesized from Pistacia lentiscus Gum and Its Nanocomposite with WO3 Nanoparticles: Visible-Light-Driven Photocatalytic Activity

2021

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This paper reports the synthesis of a new nitrogen-doped porous bio-graphene (NPBG) with a specific biomorphic structure, using Pistacia lentiscus as a natural carbon source containing nitrogen that also acts as a bio-template. The obtained NPBG demonstrated the unique feature of doped nitrogen with a 3D nanoporous structure. Next, a WO3/N-doped porous bio-graphene nanocomposite (WO3/NPBG-NC) was synthesized, and the products were characterized using XPS, SEM, TEM, FT-IR, EDX, XRD, and Raman analyses. The presence of nitrogen doped in the structure of the bio-graphene (BG) was confirmed to be pyridinic-N and pyrrolic-N with N1 peaks at 398.3 eV and 400.5 eV, respectively. The photocatalytic degradation of the anionic azo dyes and drugs was investigated, and the results indicated that the obtained NPBG with a high surface area (151.98 m2/g), unique electronic properties, and modified surface improved the adsorption and photocatalytic properties in combination with WO3 nanoparticles (WO3-NPs) as an effective visible-light-driven photocatalyst. The synthesized WO3/NPBG-NC with a surface area of 226.92 m2/g displayed lower bandgap and higher electron transfer compared with blank WO3-NPs, leading to an increase in the photocatalytic performance through the enhancement of the separation of charge and a reduction in the recombination rate. At the optimum conditions of 0.015 g of the nanocomposite, a contact time of 15 min, and 100 mg/L of dyes, the removal percentages were 100%, 99.8%, and 98% for methyl red (MR), Congo red (CR), and methyl orange (MO), respectively. In the case of the drugs, 99% and 87% of tetracycline and acetaminophen, respectively, at a concentration of 10 mg/L, were removed after 20 min.

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Section: Photocatalytic Studymentioning

confidence: 98%

A Novel N-Doped Nanoporous Bio-Graphene Synthesized from Pistacia lentiscus Gum and Its Nanocomposite with WO3 Nanoparticles: Visible-Light-Driven Photocatalytic Activity

2021

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“…These peaks might be labeled as C=C (284.6 eV), C–C (285.5 eV), C–O (286.6 eV), C=O (287.6 eV), and O=C–O (288.8 eV) [ 90 ]. The C1s spectrum of GO was significantly different from graphite, which indicated that the drastic change in the structure was due to the introduction of oxygen functional groups [ 4 ]. On comparing the C1s spectra of GO and IC-rGO, it was evident that the quantity of oxygen functional groups was significantly decreased [ 78 ].…”

Section: Surface Characterization Of 3d Graphene-based Nanomateriamentioning

confidence: 99%

“…[ 3 ]. Due to these attributes, a number of graphene-based nanomaterials have been developed for utilization in energy storage, catalysis, electronic devices, and sensor applications [ 4 , 5 , 6 , 7 , 8 , 9 ]. Recently, graphene-based nanomaterials have also been utilized for aluminum ion batteries as a promising electrode material along with Al-foil in an ionic liquid electrolyte [ 10 , 11 , 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Electrochemical Study of Three-Dimensional Graphene-Based Nanomaterials for Energy Applications

et al. 2020

Self Cite

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Graphene is an attractive soft material for various applications due to its unique and exclusive properties. The processing and preservation of 2D graphene at large scales is challenging due to its inherent propensity for layer restacking. Three-dimensional graphene-based nanomaterials (3D-GNMs) preserve their structures while improving processability along with providing enhanced characteristics, which exhibit some notable advantages over 2D graphene. This feature article presents recent trends in the fabrication and characterization of 3D-GNMs toward the study of their morphologies, structures, functional groups, and chemical compositions using scanning electron microscopy, X-ray diffraction, Raman spectroscopy, Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy. Owing to the attractive properties of 3D-GNMs, which include high surface areas, porous structures, improved electrical conductivity, high mechanical strength, and robust structures, they have generated tremendous interest for various applications such as energy storage, sensors, and energy conversion. This article summarizes the most recent advances in electrochemical applications of 3D-GNMs, pertaining to energy storage, where they can serve as supercapacitor electrode materials and energy conversion as oxygen reduction reaction catalysts, along with an outlook.

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“…Recent progress in nanoscience and nanotechnology provides a convenient solution to many challenges in diverse fields, with new materials such as 2D materials, [ 1 ] metal catalysts, [ 2 ] organic polymers, [ 3 ] etc., offering unique possibilities in such directions. [ 4 ] Yet, such materials generally lack self‐motion performance for, i.e., targeted drug delivery, which hamper their effectiveness.…”

Section: Introductionmentioning

confidence: 99%

Design and Control of the Micromotor Swarm Toward Smart Applications

Yuan

Pacheco

Jurado‐Sánchez

et al. 2021

Advanced Intelligent Systems

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Micro‐ and nanomotors are micro‐ and nanostructures capable of autonomous movement and collective behavior, mimicking natural counterparts. This review aims to give a recent perspective on micro‐ and nanomotors driven by intelligent mechanisms in action under the cooperative effect of the swarm of micromotors as their distinctive feature. Different energy sources and the factors that can influence cooperative micromotor motion are comprehensively covered, along with the underlying phenomena and related applications. The motion ability of micro/nanomotors, along with capabilities to reach a targeted destination, holds considerable promise to address remaining challenges in the environmental and biomedical fields.

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Efficient dye removal and separation based on graphene oxide nanomaterials

Abstract: Different graphene-based nanomaterials were synthesized and tested for dye removal, showing that graphene oxide demonstrates high capability for the separation of cationic and anionic dyes.

Cited by 84 publications

References 40 publications

A Novel N-Doped Nanoporous Bio-Graphene Synthesized from Pistacia lentiscus Gum and Its Nanocomposite with WO3 Nanoparticles: Visible-Light-Driven Photocatalytic Activity

A Novel N-Doped Nanoporous Bio-Graphene Synthesized from Pistacia lentiscus Gum and Its Nanocomposite with WO3 Nanoparticles: Visible-Light-Driven Photocatalytic Activity

Synthesis and Electrochemical Study of Three-Dimensional Graphene-Based Nanomaterials for Energy Applications

Design and Control of the Micromotor Swarm Toward Smart Applications

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