Removal of acridine orange from water by graphene oxide

Coello-Fiallos, Diana; Gomez, Cristian Vacacela; Usca, Gabriela Tubon; Perez, Dror; Tavolaro, Palmira; Martino, G.; Caputi, Lorenzo; Tavolaro, Adalgisa

doi:10.1063/1.4908580

Cited by 17 publications

(8 citation statements)

References 28 publications

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“…Only a few published contributions were found. Coello-Fiallos et al [115] investigated the dye removal by the GO from natural graphite by modified Hummer’s method. By analyzing the changes in the stretching vibrational bands of C-N and C-C, chemical interaction was corroborated between the AO and the functional groups of GO.…”

Section: Graphene Oxide (Go) Based Composite Materials For Water Rmentioning

confidence: 99%

Environmental Remediation Applications of Carbon Nanotubes and Graphene Oxide: Adsorption and Catalysis

et al. 2019

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Environmental issues such as the wastewater have influenced each aspect of our lives. Coupling the existing remediation solutions with exploring new functional carbon nanomaterials (e.g., carbon nanotubes, graphene oxide, graphene) by various perspectives shall open up a new venue to understand the environmental issues, phenomenon and find out the ways to get along with the nature. This review makes an attempt to provide an overview of potential environmental remediation solutions to the diverse challenges happening by using low-dimensional carbon nanomaterials and their composites as adsorbents, catalysts or catalysts support towards for the social sustainability.

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Section: Graphene Oxide (Go) Based Composite Materials For Water Rmentioning

confidence: 99%

Environmental Remediation Applications of Carbon Nanotubes and Graphene Oxide: Adsorption and Catalysis

et al. 2019

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“…Nowadays, the synthesis of rGO follows an eco-friendly and cost-effective preparation method that can be used for large-scale water treatment technologies [ 32 , 33 ]. Moreover, the presence of oxygen functional groups (mainly hydroxyl and epoxide groups [ 34 ]) on the rGO surface allows covalent modifications with strong chelating groups, which, in turn, present a high affinity to metal ions or more complex organic/inorganic molecules.…”

Section: Introductionmentioning

confidence: 99%

Cationic Pollutant Removal from Aqueous Solution Using Reduced Graphene Oxide

et al. 2022

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Reduced graphene oxide (rGO) is one of the most well-known graphene derivatives, which, due to its outstanding physical and chemical properties as well as its oxygen content, has been used for wastewater treatment technologies. Particularly, extra functionalized rGO is widely preferred for treating wastewater containing dyes or heavy metals. Nevertheless, the use of non-extra functionalized (pristine) rGO for the removal of cationic pollutants is not explored in detail or is ambiguous. Herein, pristine rGO—prepared by an eco-friendly protocol—is used for the removal of cationic pollutants from water, i.e., methylene blue (MB) and mercury-(II) (Hg-(II)). This work includes the eco-friendly synthesis process and related spectroscopical and morphological characterization. Most importantly, the investigated rGO shows an adsorption capacity of 121.95 mg g−1 for MB and 109.49 mg g−1 for Hg (II) at 298 K. A record adsorption time of 30 min was found for MB and 20 min for Hg (II) with an efficiency of about 89% and 73%, respectively. The capture of tested cationic pollutants on rGO exhibits a mixed physisorption–chemisorption process. The present work, therefore, presents new findings for cationic pollutant adsorbent materials based on oxidized graphenes, providing a new perspective for removing MB molecules and Hg(II) ions.

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“…However, the properties of GO and rGO are quite different from those found in graphene since they are covered by oxygen-containing functional groups [ 23 ]. The presence of these functional groups provides a hydrophobic feature to oxidized graphenes and interesting adsorption properties [ 24 ]. Several top-down approaches have been proposed for preparing graphene and related derivatives.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Mercury on Oxidized Graphenes

et al. 2022

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Graphene oxide (GO) and its reduced form, reduced graphene oxide (rGO), are among the most predominant graphene derivatives because their unique properties make them efficient adsorbent nanomaterials for water treatment. Although extra-functionalized GO and rGO are customarily employed for the removal of pollutants from aqueous solutions, the adsorption of heavy metals on non-extra-functionalized oxidized graphenes has not been thoroughly studied. Herein, the adsorption of mercury(II) (Hg(II)) on eco-friendly-prepared oxidized graphenes is reported. The work covers the preparation of GO and rGO as well as their characterization. In a further stage, the description of the adsorption mechanism is developed in terms of the kinetics, the associated isotherms, and the thermodynamics of the process. The interaction between Hg(II) and different positions of the oxidized graphene surface is explored by DFT calculations. The study outcomes particularly demonstrate that pristine rGO has better adsorbent properties compared to pristine GO and even other extra-functionalized ones.

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Removal of acridine orange from water by graphene oxide

Cited by 17 publications

References 28 publications

Environmental Remediation Applications of Carbon Nanotubes and Graphene Oxide: Adsorption and Catalysis

Environmental Remediation Applications of Carbon Nanotubes and Graphene Oxide: Adsorption and Catalysis

Cationic Pollutant Removal from Aqueous Solution Using Reduced Graphene Oxide

Adsorption of Mercury on Oxidized Graphenes

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