Enhancing the Photocatalytic Degradation of Methylene Blue with Graphene Oxide-Encapsulated g-C₃N₄/ZnO Ternary Composites

ACS Omega, Journal Year: 2024, Volume and Issue: 9(14), P. 16187 - 16195

Published: March 26, 2024

Methylene blue (MB) is a toxic contaminant present in wastewater. Here, we prepared various composites of graphene oxide (GO) with graphitic carbon nitride (g-C3N4) and zinc (ZnO) for the degradation MB. In comparison to ZnO (22.9%) g-C3N4/ZnO (76.0%), ternary GO/g-C3N4/ZnO showed 90% photocatalytic MB under light source after 60 min. The experimental setup parameters were varied examine process effectiveness degradation. Based on results experiments, proposed that explains roles GO, ZnO, g-C3N4 improving efficacy newly was explored. Notably, nanocomposite's surface uniformly covered nanorods. images samples clearly demonstrated porous nature photocatalysts, even being mixed composite retained layered structure original material. catalyst's plausibly enhanced contaminants. high-clarity production synthesis protocol later validated by absence any trace contamination energy-dispersive X-ray spectroscopy (EDS) results. composition elements their spectra revealed EDS nanorods, g-C3N4/ZnO, GO/g-C3N4/ZnO. outcomes indicated nanocomposites highly uncontaminated contained all necessary facilitate transformative process. this experiment could be applied at large scale, thus proving photocatalysts removal dyes.

Language: Английский

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Preparation of amino functionalized magnetic oyster shell powder adsorbent for selective removal of anionic dyes and Pb (II) from wastewater

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 260, P. 129414 - 129414

Published: Jan. 13, 2024

Language: Английский

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Process Optimization and Equilibrium, Thermodynamic, and Kinetic Modeling of Toxic Congo Red Dye Adsorption from Aqueous Solutions Using a Copper Ferrite Nanocomposite Adsorbent

Molecules, Journal Year: 2024, Volume and Issue: 29(2), P. 418 - 418

Published: Jan. 15, 2024

In the present investigation of copper ferrite, a CuFe2O4 nanocomposite adsorbent was synthesized using sol–gel method, and its relevance in adsorptive elimination toxic Congo red (CR) aqueous phase examined. A variety structural methods were used to analyze nanocomposite; as-synthesized had agglomerated clusters with porous, irregular, rough surface that could be seen FE-SEM, it also contained carbon (23.47%), oxygen (44.31%), (10.21%), iron (22.01%) elemental composition by weight. Experiments designed achieve most optimized system through utilization central composite design (CCD). The highest uptake CR dye at equilibrium occurred when initial pH value 5.5, adsorbate concentration 125 mg/L, dosage 3.5 g/L. Kinetic studies conducted, they showed adsorption process followed pseudo-second-order (PSO) model (regression coefficient, R2 = 0.9998), suggesting chemisorption mechanism, overall reaction rate governed both film pore diffusion molecules. which molecules taken up onto particle revealed interactions involving electrostatic forces, hydrogen bonding, filling. According isotherm studies, data exhibited strong agreement Langmuir (R2 0.9989), demonstrating maximum monolayer capacity (qmax) 64.72 mg/g 6 302 K. Considering obtained negative ΔG positive ΔHads ΔSads values across all tested temperatures thermodynamic investigations, confirmed characterized as endothermic, spontaneous, feasible, an increased level randomness. developed this study is anticipated find extensive application effluent treatment, owing excellent reusability remarkable capability effectively remove comparison other adsorbents.

Language: Английский

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Towards high-performance dye-sensitized solar cells by utilizing reduced graphene oxide-based composites as potential alternatives to conventional electrodes: A review

Next Materials, Journal Year: 2025, Volume and Issue: 6, P. 100477 - 100477

Published: Jan. 1, 2025

Language: Английский

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Assessment of dielectrical and electrochemical properties of PPY:CuO:rGO nanocomposite for organic light-emitting diodes and supercapacitor applications

Journal of Materials Science Materials in Electronics, Journal Year: 2025, Volume and Issue: 36(5)

Published: Feb. 1, 2025

Language: Английский

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Polyethylene glycol functionalized reduced graphene oxide coupled with zinc oxide composite adsorbent for removal of phenolic wastewater

Environmental Research, Journal Year: 2022, Volume and Issue: 214, P. 114044 - 114044

Published: Aug. 17, 2022

Language: Английский

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Electrochemical Detection of Heavy Metal Ions Based on Nanocomposite Materials

Journal of Composites Science, Journal Year: 2023, Volume and Issue: 7(11), P. 473 - 473

Published: Nov. 11, 2023

Heavy metal ions (HMIs) have acute toxic effects on health and are dangerous for human existence the ecosystem. Therefore, their sensitive selective detection is of great importance. In recent years, various nanocomposite materials been used by researchers HMIs using modalities electrochemical techniques. This review summarizes advances in developing sensors based numerous detecting HMIs. Nanocomposite materials, such as metal–organic frameworks (MOFs), organic conducting polymer (OCPs), carbon nanotubes (CNTs), graphene oxide (GO), graphene/reduced (rGO), graphitic nitride, oxide, chitosan, MXenes, nanoparticle-based nanocomposites, etc., explored to improve sensing properties sensors. emphasizes materials’ synthesis characterization techniques, HMI Moreover, this highlights development portable biosensors real-world scenarios, environmental monitoring, food safety, clinical diagnosis. also demonstrates importance a reliable, sensitive, tool

Language: Английский

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Ultrasound-assisted adsorption of organic dyes in real water samples using zirconium (IV)-based metal-organic frameworks UiO-66-NH2 as an adsorbent

Heliyon, Journal Year: 2023, Volume and Issue: 9(11), P. e22001 - e22001

Published: Nov. 1, 2023

The utilization of dye adsorption through metal-organic frameworks represents an eco-friendly and highly effective approach in real water treatment. Here, ultrasound assisted was employed for the remediation three dyes including methylene blue (MB), malachite green (MG), congo red (CR) from samples using zirconium(IV)-based adsorbent (UiO-66-NH2). characterized structural, elemental, thermal morphological features XRD, XPS, FTIR, thermogravimetric analysis, SEM, BET , Raman spectroscopy. capacity to uptake pollutants aqueous solutions investigated under different experimental conditions such as amount UiO-66-NH2 at various contact durations, temperatures, pH levels, initial loading amounts. maximum removal optimal found be 938, 587, 623 mg g-1 towardMB, MG, CR, respectively. studied on surface a monolayer endothermic process. probable mechanism chemisorption follows pseudo-second-order kinetics. From findings regeneration studies, it deduced that can effectively used consecutive cycles without any momentous loss its efficacy. Furthermore, with ultrasound-assisted might help safeguard environment develop new strategies sustainability natural resources.

Language: Английский

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Sustainable synthetic approach and applications of ZnO/r-GO in the adsorption of toxic Pb2+ and Cr6+ ions

Inorganic Chemistry Communications, Journal Year: 2022, Volume and Issue: 145, P. 110040 - 110040

Published: Oct. 12, 2022

Language: Английский

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TiO2 based nanomaterial: Synthesis, structure, photocatalytic properties, and removal of dyes from wastewater

Korean Journal of Chemical Engineering, Journal Year: 2023, Volume and Issue: 40(8), P. 1822 - 1838

Published: June 19, 2023

Language: Английский

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