Improvement of graphene oxide characteristics depending on base washing

Kabel, Khalid I.; Farag, Ahmed A.; Elnaggar, Elsayed M.; Al-Gamal, Abdalrhman G.

doi:10.3103/s1063457615050056

Cited by 14 publications

(6 citation statements)

References 31 publications

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“…This concept is in accordance with the specific chemical structure of the EOGO used in the present study with larger graphene domains compared to the oxygen rich areas. On the other hand, also at higher loading levels, the decrease in the demixing rate of solvent and non‐solvent may propel the final surface roughness to decrease 86,87 …”

Section: Resultsmentioning

confidence: 99%

Investigation of electric field‐aligned edge‐oxidized graphene oxide nanoplatelets in polyethersulfone matrix in terms of pure water permeation and dye rejection

Besharat

Manteghian

Russo

et al. 2020

Polymers for Advanced Techs

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Herein, we have evaluated the impact of orientated edge‐oxidized graphene oxide nanoplatelets (EOGO) in polyether sulfone (PES) membrane on the pure water permeability (PWP) and organic dye molecule rejection values. Aligned PES/EOGO nanocomposite films were prepared through electric field induction. Morphological, structural, and chemical‐physical characterizations including atomic force microscopy, thermogravimetric analysis (TGA), contact angle, zeta potential, porosity, and PWP measurements were carried out. The results revealed successful aligned/oriented PES/EOGO nanocomposite formation at low‐to‐moderate EOGO loadings. Membrane function tests demonstrated an increase in water permeability at higher EOGO contents, up to 0.5 wt%, followed by a decrease at 1 wt% nanoplatelets due to nanoparticles agglomeration. The horizontal electric field (1000 Hz) processed samples indicated lower PWP in comparison with their vertical‐field (34% decrement) and No‐field (29% increment) counterparts as well as a better dye molecule rejection at 0.1 wt%, referring to nanoplatelets successful alignment at this loading level.

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Section: Resultsmentioning

confidence: 99%

Investigation of electric field‐aligned edge‐oxidized graphene oxide nanoplatelets in polyethersulfone matrix in terms of pure water permeation and dye rejection

Besharat

Manteghian

Russo

et al. 2020

Polymers for Advanced Techs

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“…Following this, 100 mL of deionized water was added to the mixture and agitated for 30 min before adding 10 mL of H 2 O 2 solution (30 wt %) to eliminate any remaining KMnO 4 . GO was successfully synthesized and rinsed three times with deionized water to eliminate inorganic contaminants before being dried at 80 °C overnight. , …”

Section: Materials and Methodsmentioning

confidence: 99%

“…GO was successfully synthesized and rinsed three times with deionized water to eliminate inorganic contaminants before being dried at 80 °C overnight. 28,29 2.3. Fabrication of the FGO Composite.…”

Section: Synthesis Of Gomentioning

confidence: 99%

Highly Efficient Elimination of Pb⁺² and Al⁺³ Metal Ions from Wastewater Using Graphene Oxide/3,5-Diaminobenzoic Acid Composites: Selective Removal of Pb²⁺ from Real Industrial Wastewater

et al. 2022

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In this study, graphene oxide (GO) was functionalized with 3,5-diaminobenzoic acid (DABA) by a one-step method to produce functionalized graphene oxide (FGO). FGO is a new type of absorbent crystalline substance that has a high surface area and a large porosity site as well as a large number of dentate functional groups which lead to enhanced adsorption performance for heavy metal ions. The adsorption efficiency of FGO for Pb+2 and Al+3 metal ions was extra satisfactory when compared with GO due to the ease of design and the homogeneous structure of FGO. The structure of synthesized GO and FGO was confirmed by different techniques such as FTIR, XRD, TGA, BET nitrogen adsorption–desorption methods, and TEM analyses. The mass of utilized adsorbents, the pH of the medium, the concentration of ionic species in the medium, temperature, and process time were all investigated as variables in the adsorbent procedure. The experimental data recorded that the maximum adsorption efficiency of the 0.5 g/L FGO composite was 99.7 and 99.8% for Pb+2 and Al+3 metal ions, respectively, while in the case of using GO, the maximum adsorption efficiency was 92.6 and 91.9% at ambient temperature in a semineutral medium at pH 6 after 4 h. The adsorption results were in good conformity with the Freundlich model and pseudo-second-order kinetics for Pb+2 and Al+3 metal ions. Also, the reusability study indicates that FGO can be used repeatedly at least for five cycles with a slight significant loss in its efficiency.

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“…In various media, medical drugs are generally subjected to a variety of oxidation processes resulting in their decomposition or degradation. − Throughout these oxidation processes, oxidizers convert harmful or toxic materials to lower toxic ones which can be discharged safely to the environment. − Thus, oxidation of medical drugs has been considered as one of the supreme substantial methods for drug degradation and water-treating processes . Fluconazole is a significant antifungal drug utilized for a wide number of fungal infections.…”

Section: Introductionmentioning

confidence: 99%

Effective Treatment Methodology for Environmental Safeguard Catalytic Degradation of Fluconazole by Permanganate Ions in Different Acidic Environments: Kinetics, Mechanistics, RSM, and DFT Modeling

Toghan,

Fawzy,

Alqarni

et al. 2024

ACS Omega

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In this paper, the degradation of fluconazole drug (Flz) was explored kinetically utilizing permanganate ion [MnO 4 − ] as an oxidant in different acidic environments, namely sulfuric and perchloric acids at various temperatures. Stoichiometry of the reactions between Flz and [MnO 4− ] in both acidic environments was attained to be 1.2 ± 0.07 mol. The kinetics of the degradation reactions in both cases were the same, being unit order regarding [MnO 4 − ], fewer than unit orders in [Flz], and fractional second orders in acid concentrations. The rate of oxidative degradation of fluconazole in H 2 SO 4 was higher than that in HClO 4 at the same investigational circumstances. The addition of small amounts of Mg 2+ and Zn 2+ enhanced the degradation rates. The activation quantities were evaluated and debated. The gained oxidation products were characterized using spot tests. A mechanistic approach for the fluconazole degradation was suggested. Finally, the rate law expressions were derived which were agreed with the acquired outcomes. The rates of degradation for various [Flz] were mathematically modeled using the response surface methodology (RSM). The RSM model's conclusions and the experimental findings are in agreement. The oxidative degradation mechanism of Flz using density functional theory (DFT) was performed. The fluconazole drug degrades in acidic settings, protecting both the environment and human health, according to a method that is easy to use, powerful, inexpensive, practical, affordable, and safe.

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Improvement of graphene oxide characteristics depending on base washing

Cited by 14 publications

References 31 publications

Investigation of electric field‐aligned edge‐oxidized graphene oxide nanoplatelets in polyethersulfone matrix in terms of pure water permeation and dye rejection

Investigation of electric field‐aligned edge‐oxidized graphene oxide nanoplatelets in polyethersulfone matrix in terms of pure water permeation and dye rejection

Highly Efficient Elimination of Pb⁺² and Al⁺³ Metal Ions from Wastewater Using Graphene Oxide/3,5-Diaminobenzoic Acid Composites: Selective Removal of Pb²⁺ from Real Industrial Wastewater

Effective Treatment Methodology for Environmental Safeguard Catalytic Degradation of Fluconazole by Permanganate Ions in Different Acidic Environments: Kinetics, Mechanistics, RSM, and DFT Modeling

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Improvement of graphene oxide characteristics depending on base washing

Cited by 14 publications

References 31 publications

Investigation of electric field‐aligned edge‐oxidized graphene oxide nanoplatelets in polyethersulfone matrix in terms of pure water permeation and dye rejection

Investigation of electric field‐aligned edge‐oxidized graphene oxide nanoplatelets in polyethersulfone matrix in terms of pure water permeation and dye rejection

Highly Efficient Elimination of Pb+2 and Al+3 Metal Ions from Wastewater Using Graphene Oxide/3,5-Diaminobenzoic Acid Composites: Selective Removal of Pb2+ from Real Industrial Wastewater

Effective Treatment Methodology for Environmental Safeguard Catalytic Degradation of Fluconazole by Permanganate Ions in Different Acidic Environments: Kinetics, Mechanistics, RSM, and DFT Modeling

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Highly Efficient Elimination of Pb⁺² and Al⁺³ Metal Ions from Wastewater Using Graphene Oxide/3,5-Diaminobenzoic Acid Composites: Selective Removal of Pb²⁺ from Real Industrial Wastewater