Green preparation of graphene oxide nanosheets as adsorbent

Scientific Reports, Journal Year: 2023, Volume and Issue: 13(1)

Published: June 8, 2023

As a basic building block of graphene-based materials, graphene oxide (GO) plays an important role in scientific research and industrial applications. At present, numerous methods have been employed to synthesize GO, there are still some issues that need be solved, thus it is importance develop green, safe low-cost GO preparation method. Herein, fast method was designed prepare namely, graphite powder firstly oxidized dilute sulfuric acid solution (H2SO4, 6 mol/L) with hydrogen peroxide (H2O2, 30 wt%) as oxidant, then exfoliated by ultrasonic treatment water. In this process, H2O2 the only no other oxidants were used, explosive nature reaction conventional could completely eliminated. This has advantages such fast, Mn-based residues. The experimental results confirm obtained oxygen-containing groups better adsorption property compared powder. adsorbent, can remove methylene blue (50 mg/L) Cd2+ (56.2 from water removal capacity 23.8 mg/g 24.7 mg/g, respectively. It provides for applications adsorbent.

Language: Английский

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Preparation polymer-grafted magnetic starch adsorption material St/Fe3O4-g-p(GMA-r-HEMA) used for removal of heavy metals

Colloids and Surfaces A Physicochemical and Engineering Aspects, Journal Year: 2024, Volume and Issue: 685, P. 133255 - 133255

Published: Jan. 21, 2024

Language: Английский

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Functionalised graphene oxide dual nanocomposites for treatment of hazardous environmental contaminants

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 342, P. 126959 - 126959

Published: March 2, 2024

During the past few decades, water contamination has raised a huge concern due to rapid industrialization, agricultural wastes, metal galvanizations, and leather industries as result of discharge organic pollutants, dyes heavy metals. The present study investigates synthesis copper oxide nanoparticles (CuO-NPs) graphene oxide-copper (GO/CuO-NPs) for ions adsorption like Ni2+ Cd2+ from wastewater. For this purpose, batch continuous studies were performed. chemical physical characteristics analyzed by FTIR, XRD, SEM, AFM. AFM analysis confirmed hexagonal structure an average diameter 79.91, 82.01 21.45 nm GO/CuO-NP, CuOn, CuOm, respectively. In scale, it is concluded that GO/CuO-NPs showed best capacity than CuOn CuOm at pH value 8, adsorbent dose 250 mg, initial concentration 50 mg/L, contact time 15 min. GO/CuO-NP maximum removal 99.16 98.84 % respectively min time. Similarly, about 99.37 99.18 was observed with mg mg/L dye concentration. isotherm kinetic revealed results fitted Langmuir isotherms Pseudo-second order model, While in analysis, 75 flow rate 4 mL/min, bed height 1.5 2 cm. However, provides valuable insight into novel nanocomposites' development eliminate industrial

Language: Английский

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Tricks and tracks of prevalence, occurrences, treatment technologies, and challenges of mixtures of emerging contaminants in the environment: With special emphasis on microplastic

Journal of Contaminant Hydrology, Journal Year: 2024, Volume and Issue: 265, P. 104389 - 104389

Published: June 24, 2024

Language: Английский

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Customized carbon composite nanomaterials for the mitigation of emerging contaminants: a review of recent trends

Carbon letters, Journal Year: 2024, Volume and Issue: 34(4), P. 1091 - 1114

Published: March 25, 2024

Language: Английский

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