Review on synthesis of 3D graphene-based configurations and their adsorption performance for hazardous water pollutants

Hiew, Billie Yan Zhang; Lee, Lai Yee; Lee, Xin Jiat; Thangalazhy‐Gopakumar, Suchithra; Gan, Suyin; Lim, Siew Shee; Pan, Guan Ting; Yang, Thomas C.-K.; Chiu, Wee Siong; Khiew, Poi Sim

doi:10.1016/j.psep.2018.02.010

Cited by 131 publications

(25 citation statements)

References 270 publications

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“…Some recent review articles have highlighted the application of graphene oxide nitrogen-containing derivatives or graphene 3D structures in removal of contaminants from wastewater. 41,42 In this research, rst GO was converted to an aminated form with ethylenediamine (EDA). Unlike GO, the aminatedgraphene (GN) has a positive surface charge and is expected to be a good adsorbent for anionic dyes.…”

Section: 23mentioning

confidence: 99%

Eco-friendly synthesis of graphene–chitosan composite hydrogel as efficient adsorbent for Congo red

Omidi

Kakanejadifard

2018

RSC Adv.

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A simple approach was utilized to synthesize graphene/chitosan-based hydrogel using glutaraldehyde as crosslinking agent in room temperature. The composite aerogel was used for removal of cationic and anionic dyes from aqueous solution. It showed high adsorption capacity towards Congo red as an anionic dye. Adsorption experiments were performed based on various parameters, such as initial Congo red concentration, solution pH and contact time. The kinetics data were analyzed using four different models and the pseudo-second-order model best described the adsorption of Congo red aerogel. The Equilibrium adsorption isotherm data indicated that equilibrium data were fitted to the Langmuir isotherm. The maximum dye adsorption capacity calculated from the Langmuir isotherm equation was 384.62 mg g À1. Moreover, the aerogel was stable and easily recovered, and adsorption capacity was about 100% of the initial saturation adsorption capacity after being used three times.

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Section: 23mentioning

confidence: 99%

Eco-friendly synthesis of graphene–chitosan composite hydrogel as efficient adsorbent for Congo red

Omidi

Kakanejadifard

2018

RSC Adv.

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“…Based on the results of the correlation coefficients (R 2 ) in fig. 7, it found that pseudo-secondorder is better correlated with D [35].…”

Section: Adsorption Kineticsmentioning

confidence: 91%

Adsorptive Removal of Doxycycline From Aqueous Solution Using Graphene Oxide/Hydrogel Composite

Abdulsahib¹,

Ganduh

Mahdi

et al. 2020

Int J App Pharm

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Objective: Preparation of novel, safe, and low-cost composite by addition of graphene oxide (GO) to polyvinylpyrrolidone-acrylic acid composite (PVP-AAc) to remove the doxycycline hydrochloride (D) from polluted aquatic environment. Methods: Different concentrations of D were used to study the adsorption process of the antibiotic on the surface of GO/(PVP-AAc) hydrogel composite. The aquatic solution of D was used for studying the adsorption process through a series of different experiments to determine the contact time, adsorbate amount, appropriate temperature, the preferred pH, ionic strength, adsorption kinetics and isotherms on the adsorbent surface of GO/PVP-AAc composite. Fourier transform infrared (FT-IR) spectroscopy and Field-emission scanning electron microscopy (FE-SEM) were used to detect the structure, functional groups and surface morphology of the composite before and after D adsorption. Results: Doxycycline is adsorb on the surface of GO/PVP-AAc hydrogel composite through by physical interactions. The adsorption kinetics correlated to the pseudo-second-order model, contact time studies of D equal to 180 min and the high R2 value of 0.98 indicates that Langmuir isotherm model better fitted to the data for the removal of D at 15 °C. The results of thermodynamic parameters show that the nature of the adsorption process is physical, exothermic, orderly and spontaneous. The adsorption capacity of D favors the acidic media. When NaCl is added to the solution, the adsorption capacity of D will increase. Conclusion: Graphene oxide/PVP-AAc composite is a novel, worthy and efficient adsorbent for the removal of the doxycycline polluted the water because of its low cost, hydrophilic properties, large surface area and special structure that give impressive dispersible activity in aquatic solutions.

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“…[8,9] The 2D structure confers graphene large surface area, high charge carrier content, ionic mobility, transparency in the visible region, mechanical strength and flexibility, and other properties that render it unique. [2,10] Several graphene preparation methods have been reported to date, [11] and the structural quality of graphene and amount of material obtained, which are related to the process cost, have been correlated. Graphene-based materials with few defects and few functional groups are typically obtained using chemical vapor deposition (CVD), [12,13] mechanical exfoliation, [2] or epitaxial growth with SiC [14][15][16] and present high electrical and thermal conductivities and high charge carrier mobility.…”

Section: Introductionmentioning

confidence: 99%

“…[29] The structural and electronic properties of rGO are inferior to those of pristine graphene; however, rGO is amenable to modification with different entities, which expanded the use of GO and rGO as (bio)sensing platforms by correlating their properties and functionalities with their applications. [8,11,23,25,30] Several researchers have focused on the advances in GO and rGO preparation and applications. [31][32][33][34][35][36][37] The oxygenated groups of GO and, to a lower extent, those of rGO, can significantly improve performance when these materials are used as (bio)electrochemical sensors.…”

Section: Introductionmentioning

confidence: 99%

Structure, Properties, and Electrochemical Sensing Applications of Graphene‐Based Materials

et al. 2020

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Owing to their versatility and unique characteristics, graphene‐based materials have been used extensively for the development of electrochemical sensors and biosensors. The key to the maximum potential of these materials is the understanding of the role their structure plays in their modification processes. Herein, we summarize some structural characteristics of graphene oxide (GO) and reduced graphene oxide (rGO) and explore different surface modification methods for electrochemical sensing applications. surveyed the most recent applications of these materials as (bio)sensors, particularly for environmental monitoring and health‐related applications, such as quantification of biomarkers and metabolites and detection of cancer cells. The low detection limits, selectivity toward target molecules, and robustness of GO‐ and rGO‐based electrodes render them critical materials for the preparation of sensors for routine analysis and monitoring.

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Review on synthesis of 3D graphene-based configurations and their adsorption performance for hazardous water pollutants

Cited by 131 publications

References 270 publications

Eco-friendly synthesis of graphene–chitosan composite hydrogel as efficient adsorbent for Congo red

Eco-friendly synthesis of graphene–chitosan composite hydrogel as efficient adsorbent for Congo red

Adsorptive Removal of Doxycycline From Aqueous Solution Using Graphene Oxide/Hydrogel Composite

Structure, Properties, and Electrochemical Sensing Applications of Graphene‐Based Materials

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