Photocatalytic degradation of Acid Red 18 by synthesized AgCoFe2O4@Ch/AC: Recyclable, environmentally friendly, chemically stable, and cost-effective magnetic nano hybrid catalyst

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 269, P. 131897 - 131897

Published: April 26, 2024

Language: Английский

---

Synergistic degradation of metronidazole and penicillin G in aqueous solutions using AgZnFe2O4@chitosan nano-photocatalyst under UV/persulfate activation

Environmental Technology & Innovation, Journal Year: 2024, Volume and Issue: 35, P. 103724 - 103724

Published: June 26, 2024

In recent years, the persistence of pharmaceutical contaminants like metronidazole (MNZ) and penicillin G (PG) in water bodies has become a major environmental concern. The present research studied simultaneous degradation MNZ PG utilizing an AgZnFe2O4@Ch catalyst generated through co-precipitation technique as effective stimulator for persulfate (PS) existence UV light. structure was characterized using X-ray powder diffraction, Fourier transform infrared spectroscopy, Field emission scanning electron microscopy, vibrating-sample magnetometer, energy dispersive spectroscopy mapping. After 50 minutes reaction time under ideal operating conditions, which included 0.4 g/L catalyst, 4 mM PS, 5 mg/L PG, pH 5, highest 81.5 % 82.3 were obtained. Statistical parameters, including R2 values 0.985 0.981 indicate very good agreement between predicted observed values. Garson's method analysis revealed that PS dosage had greatest impact on degradation, while initial concentration exerted most significant influence degradation. Langmuir-Hinshelwood model surface rate constants (Kc) 0.954 (mg/L.min) adsorption equilibrium (KL-H) 0.032 (L/mg) both antibiotics, respectively. claimed mechanism illustrated by free radical scavenging studies, demonstrated SO•4- radicals main involved PG. A last investigation catalyst's regeneration it satisfactory chemical stability after five cycles usage approaches.

Language: Английский

---

Synthesis of novel magnesium ferrite Schiff base chitosan nanocomposite for efficient removal of pb(II) ions from aqueous media

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: Feb. 4, 2025

In this study, a novel MgFe2O4-Schiff base-chitosan nanocomposite was synthesized using straightforward crosslinking method. The synthesis involved integrating MgFe2O4 nanoparticles with modified chitosan through Schiff base formed by the reaction between terephthalaldehyde and aminopyrazine. A comprehensive characterization performed, including X-ray diffraction analysis, which verified crystalline structure successful incorporation of MgFe2O into chitosan-Schiff matrix. Scanning electron microscopy revealed distinct surface morphology, characterized rough, non-uniform alignment resulting from strong interactions Additionally, energy-dispersive analysis elemental composition nanocomposite, revealing peaks corresponding to carbon, nitrogen, oxygen, magnesium, iron. exhibited outstanding performance as nanoadsorbent for efficient removal Pb(II) ions aqueous media electrostatic attraction complexation mechanisms, achieving maximum adsorption capacity 290.7 mg g-1. process determined be spontaneous, endothermic, chemically driven, aligning well Langmuir isotherm model pseudo-second-order kinetics. optimal conditions were pH 5.5, contact time 100 min, temperature 328 K. Furthermore, demonstrated excellent recyclability, retaining over 94.8% its initial efficiency after five consecutive adsorption-desorption cycles. This study highlights nanocomposite's potential an eco-friendly, cost-effective, highly material practical applications in water treatment, addressing urgent need sustainable solutions heavy metal contamination.

Language: Английский

---

Metronidazole adsorption by bio-synthesized silver-zinc ferrite nanoadsorbent in presence of chitosan from aqueous media: response surface methodology

Applied Water Science, Journal Year: 2024, Volume and Issue: 14(5)

Published: April 9, 2024

Abstract A novel magnetic biocomposite adsorbent, denoted as AgZnFe 2 O 4 @Ch, was utilized for the degradation of Metronidazole (MNZ) from water. Various analytical techniques, including vibrating sample magnetometer (VSM), X-ray diffraction (XRD), Brunauer–Emmett–Teller, Fourier transform infrared spectroscopy, and field emission scanning electron microscopy (FESEM), were applied to investigate characteristics adsorbent. XRD examination confirmed formation spinel ferrites phases. FESEM assessment indicated a notable reduction in aggregation. The ferromagnetic character adsorbent well demonstrated by VSM analysis. saturation magnetization value straightforward separating outside fields 14.64 emu/g. An modeling approach used evaluate analyze impacts factors MNZ initial concentration, temperature, contact time, dosage, pH. Optimized conditions involved an dosage 0.9 g/L, pH 7, concentration 10 mg/L, time 50 min, resulting peak adsorption efficiency 65.53% under favorable circumstances. good degree fit achieved with linear model. experimental equilibrium data fitting Langmuir, Freundlich, Temkin isotherm models demonstrates that Langmuir model effective appropriate evaluating adsorption. Intraparticle kinetic also shown be better suitable characterizing onto thermodynamic analysis process @Ch characterized exothermicity lacked spontaneity.

Language: Английский

---

Photocatalytic Degradation of Tetracycline in Wastewater with Bio-based Matrix Magnetic Heterogeneous Nanocatalyst: Performance and Mechanism Study

Journal of Polymers and the Environment, Journal Year: 2024, Volume and Issue: 32(11), P. 5713 - 5737

Published: June 28, 2024

Language: Английский

---

Ceftriaxone photodegradation in wastewater using AgCuFe2O4/ZnO Almond-like heterogeneous nanocatalyst anchored on multi walled carbon nanotubes: Synthesis, characterization, mechanism study, and bioassay effluent

Environmental Technology & Innovation, Journal Year: 2024, Volume and Issue: 36, P. 103759 - 103759

Published: July 22, 2024

Language: Английский

---

Advances in three-dimensional electrochemical degradation: A comprehensive review on pharmaceutical pollutants removal from aqueous solution

Chemosphere, Journal Year: 2024, Volume and Issue: 362, P. 142620 - 142620

Published: June 14, 2024

Language: Английский

---

Enhanced sonophoto-catalytic and adsorption capabilities of Fe3O4@MC/MWCNT-CuO/Ag for petrochemical organic pollutants degradation from industrial process streams

Arabian Journal of Chemistry, Journal Year: 2024, Volume and Issue: 17(11), P. 105994 - 105994

Published: Sept. 17, 2024

Language: Английский

---

Synthesis and characterization of CuCoFe2O4@GA/AC as a bio-based matrix magnetic nano-heterogeneous photocatalyst for ceftriaxone degradation from aqueous media

Applied Water Science, Journal Year: 2024, Volume and Issue: 14(9)

Published: Aug. 13, 2024

Emerging contaminants such as ceftriaxone are a significant issue in the environment. They have led to series of ecological, environmental, and health issues, it is urgent find green secure method remove antibiotics from water effectively. In this research, CuCoFe2O4@Gum Arabic (GA)/Activated Carbon (AC) an innovative bio-based matrix magnetic nanocatalyst was synthesized for efficient degradation aqueous media. The structure CuCoFe2O4@GA/AC characterized via FESEM, EDS, Mapping, XRD, FTIR, VSM, DRS analyses. structural analysis catalyst revealed its synthesis at nanometer scale (40–50 nm), exhibiting high strength (Ms: 5.38 emu/g) favorable optical properties with bandgap 3.6 eV. Under optimized conditions, including pH 5, 60 min irradiation time, 0.24 g/L photocatalyst dose, concentration 5 mg/L, removal efficiency synthetic real samples 94.43% 62.5%, respectively. photocatalytic process followed pseudo-first-order Langmuir–Hinshelwood kinetic models. Furthermore, mechanism indicated prominent role superoxide radical. had recovery capability chemical stability. by showcased remarkable efficiency, indicating potential utility treatment wastewater contaminated antibiotics.

Language: Английский

---

The role of catalyst in the adsorption of dye: Homogeneous catalyst, heterogeneous catalyst, and advanced catalytic activated carbon, critical review

Desalination and Water Treatment, Journal Year: 2024, Volume and Issue: 320, P. 100780 - 100780

Published: Sept. 16, 2024

Language: Английский

---