Elimination of antibiotic contaminants from wastewater using polycarbazole nanocomposites as microwave-activated catalysts DOI
Jannatun Zia,

Noushi Zaidi,

Sapana Jadoun

et al.

Nanotechnology, Journal Year: 2024, Volume and Issue: 36(9), P. 095707 - 095707

Published: Dec. 20, 2024

Abstract Ciprofloxacin (CIP) is a widely used antibiotic, and its presence in water bodies poses risk due to resistance conventional wastewater treatment processes. The accumulation of such pharmaceuticals can disrupt aquatic ecosystems, harm life, contribute ecological imbalances. Therefore, the degradation CIP immense environmental significance. This study presents microwave-assisted catalytic antibiotic drug using nanocomposites carbazole copolymerized with pyrrole (PCz-co-PPy) thiophene (PCz-co-PTh). PCz-co-PPy PCz-co-PTh were synthesized through an ultrasound-assisted method. resulting characterized spectral morphological analyses. FT-IR UV–Vis spectroscopy confirmed successful intercalation copolymerization, while FESEM images revealed chain-like morphology. These copolymer employed as microwave-active catalysts for degradation, achieving optimal efficiency 95% within 21 min PCz-co-PPy-50/50 PCz-co-PTh-50/50 at 600 W microwave power. followed pseudo-first-order kinetics, rate constants calculated 0.031 −1 , 0.020 0.030 0.056 0.071 PCz, PPy, PTh, PCz-co-PPy-50/50, nanocomposites, respectively, 50 mg l solution. attributed formation microwave-induced active species, including hot spots, electrons (e − ), holes (h + superoxide radicals (•O 2 hydroxyl (•OH). Scavenger analysis verified that •OH •O play crucial role degradation. A possible mechanism pathway nanocomposite system proposed.

Language: Английский

Enhanced Photocatalytic Performance of Fe3O4/Phthalhydrazide/Chitosan Composites for Tetracycline Degradation DOI
Roya Mohammadzadeh Kakhki,

Hamidreza Atarodi Beimorghi

Journal of Polymers and the Environment, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 4, 2025

Language: Английский

Citations

0
N-doped BC/Ferrite collaborative degradation of antibiotics: Synthesis and mechanism research DOI
Wentai Wang, Xin Ke

Materials Science in Semiconductor Processing, Journal Year: 2025, Volume and Issue: 194, P. 109527 - 109527

Published: April 4, 2025

Language: Английский

Citations

0
Enhanced Photocatalytic Performance of Fe3O4/Phthalhydrazide/Chitosan Composites for Tetracycline Degradation DOI Creative Commons
Roya Mohammadzadeh kakhki,

Hamidreza Atarodi

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 17, 2024

Abstract This study investigates the photocatalytic performance of two novel nanocomposites, Fe3O4/chitosan and Fe3O4/phthalhydrazide/chitosan, for degradation tetracycline (TC) under visible light irradiation. The synthesized photocatalysts were characterized using Fourier-transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) to confirm their structural morphological properties. isoelectric point (pHiep) Fe3O4/phthalhydrazide/chitosan composite was determined be 9.2, indicating optimal electrostatic stability. Photocatalytic tests revealed that exhibited significantly higher efficiency, achieving 88% removal TC after 120 minutes, compared 53% composite. effect catalyst dose on activity also examined, with noted at 0.01 g 0.02 concentration. Additionally, influence concentration efficiency analyzed, highlighting decreased concentrations due competitive adsorption active sites. Mechanistic studies utilizing scavengers indicated involvement reactive species, which further elucidated pathways tetracycline. Overall, incorporation phthalhydrazide into enhanced its providing a promising approach environmental remediation pharmaceutical pollutants. findings underscore importance optimizing design operating conditions improve efficacy processes in wastewater treatment applications.

Language: Английский

Citations

0
Elimination of antibiotic contaminants from wastewater using polycarbazole nanocomposites as microwave-activated catalysts DOI
Jannatun Zia,

Noushi Zaidi,

Sapana Jadoun

et al.

Nanotechnology, Journal Year: 2024, Volume and Issue: 36(9), P. 095707 - 095707

Published: Dec. 20, 2024

Abstract Ciprofloxacin (CIP) is a widely used antibiotic, and its presence in water bodies poses risk due to resistance conventional wastewater treatment processes. The accumulation of such pharmaceuticals can disrupt aquatic ecosystems, harm life, contribute ecological imbalances. Therefore, the degradation CIP immense environmental significance. This study presents microwave-assisted catalytic antibiotic drug using nanocomposites carbazole copolymerized with pyrrole (PCz-co-PPy) thiophene (PCz-co-PTh). PCz-co-PPy PCz-co-PTh were synthesized through an ultrasound-assisted method. resulting characterized spectral morphological analyses. FT-IR UV–Vis spectroscopy confirmed successful intercalation copolymerization, while FESEM images revealed chain-like morphology. These copolymer employed as microwave-active catalysts for degradation, achieving optimal efficiency 95% within 21 min PCz-co-PPy-50/50 PCz-co-PTh-50/50 at 600 W microwave power. followed pseudo-first-order kinetics, rate constants calculated 0.031 −1 , 0.020 0.030 0.056 0.071 PCz, PPy, PTh, PCz-co-PPy-50/50, nanocomposites, respectively, 50 mg l solution. attributed formation microwave-induced active species, including hot spots, electrons (e − ), holes (h + superoxide radicals (•O 2 hydroxyl (•OH). Scavenger analysis verified that •OH •O play crucial role degradation. A possible mechanism pathway nanocomposite system proposed.

Language: Английский

Citations

0