Influence of Non-Ionic Surfactant and Silver on the Photocatalytic Activity of TiO2 Films for Degradation of Dyes in Distilled and Tap Water DOI Creative Commons

Dobrina Ivanova,

Elisaveta Mladenova, Nina Kaneva

et al.

Applied Sciences, Journal Year: 2024, Volume and Issue: 14(11), P. 4571 - 4571

Published: May 26, 2024

This study describes the impact of surfactant molecular weights (PEG 2000 and PEG 4000) on photocatalytic activity TiO2 films, deposited via dip-coating from a PEG-stabilized suspension silver-functionalized photo-fixation Ag+ under UV illumination. The pure Ag/TiO2 films is assessed in aqueous-phase degradation Malachite green Methylene blue distilled tap water visible results indicate positive effect both higher-molecular-weight non-ionic Ag-functionalization yield higher efficiency. Notably, photo-fixed with 10−2 M show highest percentages all experimental conditions. A direct correlation between concentration ions enhancement revealed: < Ag, 10−4/TiO2 10−3/TiO2 10−2/TiO2. Flame atomic absorption spectrometry used to leeching films. structural properties nanostructures are investigated through scanning electron microscopy, Brunauer–Emmett–Teller analysis, energy-dispersive X-ray spectroscopy, diffraction. Additionally, after three cycles operation, 10−2/TiO2 can maintain their activity, suggesting potential application treatment dye wastewater.

Language: Английский

The mechanistic pathway of paracetamol degradation using UV/H2O2 with PVP functionalized ZnO Nanorods DOI
Sharda Pandey, Poonam Rawat,

Anant Ram

et al.

Journal of Molecular Structure, Journal Year: 2024, Volume and Issue: 1317, P. 139068 - 139068

Published: June 24, 2024

Language: Английский

Citations

9
Photodegradation of Emerging Pollutants Using a Quaternary Mixed Oxide Catalyst Derived from Its Corresponding Hydrotalcite DOI Open Access
Laura V. Castro, Brenda Alcántar-Vázquez, Ma. Elena Manríquez-Ramírez

et al.

Catalysts, Journal Year: 2025, Volume and Issue: 15(2), P. 173 - 173

Published: Feb. 13, 2025

This study aimed to synthesize a multicationic hydrotalcite and transform it into mixed oxide nanostructures (ZnO/TiO2/CeO2/Al2O3, referred as MixO) serve heterogeneous photocatalyst for degrading various pollutants, including methylene blue (MB), methyl orange (MO), paracetamol (PA), paraquat (PQ). The was synthesized via an ultrasound-assisted method calcined at 700 °C obtain the corresponding metal oxide. A comprehensive characterization of both (MC-LDH) oxides (MixO) performed using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), photoelectron (XPS), N2 adsorption–desorption, Fourier infrared (FTIR), Raman spectroscopy, pHPZC analysis. MixO sample exhibited optical bandgap 3.19 eV. Photocatalytic performance evaluated during 240 min UV irradiation, demonstrating high degradation efficiencies attributable synergistic interactions among ZnO, TiO2, CeO2. Degradation reached 99.3% MO 95.2% MB, while PA PQ showed moderate rates 60% 15%, respectively. kinetics all pollutant compounds followed Langmuir–Hinshelwood model. Additionally, catalyst maintained consistent over four consecutive cycles, highlighting its reusability stability. These findings underscore potential practical recyclable photocatalysts environmental remediation, particularly in wastewater treatment applications.

Language: Английский

Citations

1
Stearic acid-coated plasmonic Ag nanoparticles as a dual catalyst for enhanced NiO chemo and photo catalysis DOI
Shazia Hasan, Syed Afzal Ahmad, Fouzia Mashkoor

et al.

Journal of Physics and Chemistry of Solids, Journal Year: 2024, Volume and Issue: 193, P. 112147 - 112147

Published: June 22, 2024

Language: Английский

Citations

5
Sunlight-Induced Photocatalytic Removal of Paracetamol Using Au-TiO2 Nanoparticles DOI Creative Commons

Lamine Aoudjit,

Joana M. Queirós, A. Castro

et al.

Nanomaterials, Journal Year: 2025, Volume and Issue: 15(5), P. 358 - 358

Published: Feb. 26, 2025

Using sunlight as the driving force for photocatalytic processes holds great promise sustainability. As a starting point developing material capable of degrading aquatic pollutants using solar energy stimulus, this work focuses on synthesizing Au-TiO2 nanocomposites deposition-precipitation method. Characterization nanoparticles was performed by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and Transmission Electron Microscopy (TEM). A model pollutant, paracetamol, used to test synergetic effect Au (0.05 wt%) (NPs) with TiO2 activity. The influence parameters pH, loading (0.4, 0.8, 1 g/L), pollutant concentration (20, 30, 40 ppm), contact time (30, 60, 90, 120, 150, 180 min) studied exposing NPs radiation. degradation most effective at 3 h, an initial 20 ppm, pH 6.8. Under these conditions, paracetamol in g/L can be degraded more than 99.17% under irradiation. result composite's ability successfully serve photocatalyst sun radiation, water purification widespread, cost-effective, environmentally friendly.

Language: Английский

Citations

0
Detrimental impact of photo-Fenton treated COVID-19 drugs on liver function: A thorough investigation in Danio rerio DOI
Gustavo Axel Elizalde-Velázquez,

Claudia Victoria,

Deysi Amado-Piña

et al.

Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 381, P. 125182 - 125182

Published: April 10, 2025

Language: Английский

Citations

0
PHOTOCATALYTIC DEGRADATION OF PARACETAMOL ON ZNO POWDERS: INVESTIGATING THE EFFECT GRAIN SIZE DOI
И. А. Пронин, Ivan A. Filippov, А. S. Komolov

et al.

Vacuum, Journal Year: 2025, Volume and Issue: unknown, P. 114340 - 114340

Published: April 1, 2025

Language: Английский

Citations

0
The Solvent Role for the Decomposition of Paracetamol in Distilled and Drinking Water by Pure and Ag-Modified TiO2 Sol–Gel Powders DOI Open Access
Albena Bachvarova-Nedelcheva, Reni Iordanova, Nina Kaneva

et al.

Materials, Journal Year: 2024, Volume and Issue: 17(8), P. 1791 - 1791

Published: April 13, 2024

In this study, pure TiO2 gels were synthesized by applying the sol-gel method, using Ti(IV) butoxide with addition of two different solvents, namely ethylene glycol (EG) and isopropanol (isop), only air moisture present. It was established XRD that gel prepared EG amorphous even at 400 °C, while other up to 300 °C. found (anatase) had a dominant crystalline phase during heating 600 700 (rutile) appeared. The as-obtained powdered materials annealed 500 °C subsequently underwent photocatalytic tests paracetamol. Additionally, samples modified Ag+ co-catalysts (10-2 M), photofixation UV illumination. activity Ag-modified powders also tested in photodegradation commonly used paracetamol aqueous solution under light obtained data exhibited better efficiency decomposed faster comparison non-annealed powders. highest degradation observed for TBT/isop/Ag material, efficiencies average values 65.59% 75.61% achieved after third cycle treatment. co-catalytically higher nanosized Moreover, TBT/EG, TBT/EG/Ag TBT/isop, M) demonstrated ability retain their three cycles use, suggesting they could find practical use treatment pharmaceutical wastewater. positive impact silver make desirable choice drug degradation, helping promote environmentally friendly effective wastewater technology.

Language: Английский

Citations

1
Charge transport properties and photostability of microcrystalline cellulose derived from Gigantochloa scortechinii-supported ZnO for enhanced acetaminophen degradation DOI

Nurul Syarima Nadia Sazman,

Zul Adlan Mohd Hir,

Shaari Daud

et al.

Industrial Crops and Products, Journal Year: 2024, Volume and Issue: 222, P. 119558 - 119558

Published: Sept. 4, 2024

Language: Английский

Citations

1
Magnetic Composite Carbon from Microcrystalline Cellulose to Tackle Paracetamol Contamination: Kinetics, Mass Transfer, Equilibrium, and Thermodynamic Studies DOI Open Access
Pascal S. Thue,

Alfred G. N. Wamba,

Beatris L. Mello

et al.

Polymers, Journal Year: 2024, Volume and Issue: 16(24), P. 3538 - 3538

Published: Dec. 19, 2024

This study reported a one-spot preparation of magnetic composite carbon (MCC@Fe) from microcrystalline cellulose (MC). The pure was impregnated in iron (III) chloride solution and carbonized at 650 °C. MCC@Fe adsorbent underwent various characterization techniques. XRD identified nanostructured Fe3O4 particles with an average crystallite size 34.3 nm embedded the core subunits material. FESEM images indicated rough irregular surface, some cavities along its incorporating nanoparticles, while EDS analysis confirmed presence elements like Fe, C, O. Notably, combining thermal chemical treatments produces more pores high specific surface area (500.0 m2 g−1) compared to MC (1.5 m2/g). VSM properties (0.76 emu/g), Hydrophobic Index (HI) showed that hydrophobic (HI 1.395). adsorption studies consisted kinetic, mass transfer, equilibrium, thermodynamics studies. Kinetic paracetamol on proved be rapid, time necessary for covering 95% (t0.95) lower than 27 min following fractal-like pseudo-first-order model (FPFO). Liu’s isotherm most appropriate understanding equilibrium. Remarkably, maximum sorption capacity (Qmax) 34.78 mg g−1 45 ΔH° value (+27.00 kJ/mol) negative ΔG° values were consistent physisorption mechanism favorable process. Furthermore, transfer is governed by intraparticle diffusion model, being rate-limiting step when considering Biot number greater 100. research displayed single-route production inexpensive nano adsorbents capable efficiently eliminating aqueous environments.

Language: Английский

Citations

1
Influence of Non-Ionic Surfactant and Silver on the Photocatalytic Activity of TiO2 Films for Degradation of Dyes in Distilled and Tap Water DOI Creative Commons

Dobrina Ivanova,

Elisaveta Mladenova, Nina Kaneva

et al.

Applied Sciences, Journal Year: 2024, Volume and Issue: 14(11), P. 4571 - 4571

Published: May 26, 2024

This study describes the impact of surfactant molecular weights (PEG 2000 and PEG 4000) on photocatalytic activity TiO2 films, deposited via dip-coating from a PEG-stabilized suspension silver-functionalized photo-fixation Ag+ under UV illumination. The pure Ag/TiO2 films is assessed in aqueous-phase degradation Malachite green Methylene blue distilled tap water visible results indicate positive effect both higher-molecular-weight non-ionic Ag-functionalization yield higher efficiency. Notably, photo-fixed with 10−2 M show highest percentages all experimental conditions. A direct correlation between concentration ions enhancement revealed: < Ag, 10−4/TiO2 10−3/TiO2 10−2/TiO2. Flame atomic absorption spectrometry used to leeching films. structural properties nanostructures are investigated through scanning electron microscopy, Brunauer–Emmett–Teller analysis, energy-dispersive X-ray spectroscopy, diffraction. Additionally, after three cycles operation, 10−2/TiO2 can maintain their activity, suggesting potential application treatment dye wastewater.

Language: Английский

Citations

0