Recent progress in defect‐engineered metal oxides for photocatalytic environmental remediation

Photochemistry and Photobiology, Journal Year: 2024, Volume and Issue: 100(4), P. 830 - 896

Published: May 16, 2024

Rapid industrial advancement over the last few decades has led to an alarming increase in pollution levels ecosystem. Among primary pollutants, harmful organic dyes and pharmaceutical drugs are directly released by industries into water bodies which serves as a major cause of environmental deterioration. This warns severe need find some sustainable strategies overcome these increasing eliminate pollutants before being exposed environment. Photocatalysis is well-established strategy field pollutant degradation various metal oxides have been proven exhibit excellent physicochemical properties makes them potential candidate for remediation. Further, with aim rapid industrialization photocatalytic technology, constant efforts made activity oxides. One such introduction defects lattice parent catalyst through doping or vacancy plays role enhancing catalytic achieving rates. review provides comprehensive analysis their altering material. Various defect-rich like binary oxides, perovskite spinel summarized application degradation. Finally, summary existing research, followed challenges along countermeasures provided pave path future studies this promising field.

Language: Английский

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Tetracycline removal from wastewater via g-C3N4 loaded RSM-CCD-optimised hybrid photocatalytic membrane reactor

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Jan. 12, 2024

In this study, a split-type photocatalytic membrane reactor (PMR), incorporating suspended graphitic carbon nitride (g-C3N4) as photocatalyst and layered polymeric composite (using polyamide, polyethersulfone polysulfone polymers) was fabricated to remove tetracycline (TC) from aqueous solutions the world's second most used discharged antibiotic in wastewater. The synthesised melamine by ultrasonic-assisted thermal polymerisation method and, along with membrane, characterised using various methods, including Brunauer-Emmett-Teller analysis (BET), Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Field emission scanning electron microscopy (FESEM), Ultraviolet-visible (UV-Vis). PMR process optimised, Design-Expert software for removal terms of UV irradiation time, pH, loading, concentration, separation iteration. It revealed that membrane-integrated sustainable system could effectively produce clean water simultaneous solution. maximum 94.8% obtained at concentration 22.16 ppm, pH 9.78 0.56 g/L time 113.77 min after six times passing membrane. showed reasonable reusability about 25.8% drop TC efficiency seven cycles optimal conditions. outcomes demonstrate promising performance proposed suggest it can be scaled an effective approach supply antibiotic-free water.

Language: Английский

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A novel Z-scheme heterojunction photocatalyst CeO2@WO3 nanocomposite with enhanced visible-light photocatalytic performance for wastewater treatment by cephalexin antibiotic degradation: Process optimization

Journal of Industrial and Engineering Chemistry, Journal Year: 2024, Volume and Issue: 135, P. 213 - 231

Published: Jan. 13, 2024

Language: Английский

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High-Efficient photocatalytic degradation of Levofloxacin via a novel ternary Fe2O3/CeO2/ZnO Heterostructure: Synthesis Optimization, Characterization, toxicity assessment and mechanism insight

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 493, P. 152717 - 152717

Published: May 31, 2024

Language: Английский

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A critical review on non-metal doped g-C3N4 based photocatalyst for organic pollutant remediation with sustainability assessment by life cycle analysis

Environmental Research, Journal Year: 2024, Volume and Issue: 258, P. 119390 - 119390

Published: June 13, 2024

Language: Английский

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Regulating Fe(III) spin state by anchoring iron on titanium dioxide for enhancing photo-Fenton treatment of tetracycline wastewater

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: 353, P. 128537 - 128537

Published: Jan. 1, 2025

Language: Английский

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Type-1 α-Fe2O3/TiO2 photocatalytic degradation of tetracycline from wastewater using CCD-based RSM optimization

Chemosphere, Journal Year: 2023, Volume and Issue: 336, P. 139311 - 139311

Published: June 23, 2023

Antibiotic pollution in water is a growing threat to public health and the environment, leading spread of antimicrobial-resistant bacteria. While photocatalysis has emerged as promising technology for removing antibiotics from water, its limited efficiency visible light range remains challenge. In this study, we present novel method photocatalytic degradation tetracycline, second most commonly used antibiotic worldwide, using α-Fe2O3/TiO2 nanocomposites synthesized via rapid sonochemical wet impregnation methods. The were characterised tested techniques, including BET, TEM, FTIR, XRD, FESEM, EDS, UV-Vis. RSM-CCD was also optimize process by varying four key variables (initial concentration, photocatalyst quantity, irradiation time, pH). resulting optimized conditions achieved remarkable rate 97.5%. We investigated mechanism photodegradation reusability photocatalysts, well effect source operating conditions. Overall, results demonstrate effectiveness proposed approach degrading tetracycline suggest that it may be promising, eco-friendly treatment contaminated with antibiotics.

Language: Английский

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Removal of Cefixime from Wastewater Using a Superb nZVI/Copper Slag Nanocomposite: Optimization and Characterization

Water, Journal Year: 2023, Volume and Issue: 15(10), P. 1819 - 1819

Published: May 10, 2023

Nowadays, hospital wastewater contains a high concentration of toxic pharmaceutical contaminants, posing significant threat to the environment, and human animal life. Cefixime (CFX) is one such contaminant that has detrimental impact on both aquatic terrestrial ecosystems. Therefore, it essential remove this compound using non-toxic environmentally friendly procedures ensure healthy drinking water. In study, low-cost eco-friendly nano adsorbent (nZVI/copper slag) was synthesized characterized FESEM, XRD, EDX, FTIR, zeta potential CFX from wastewater. The Response Surface Methodology (RSM) used evaluate effects experimental factors including dosage (2–10 g/L), pollutant (10–30 mg/L), pH (2–10), contact time (10–50 min) for efficient elimination. optimal conditions (adsorbent dosage: 7.79 g/L, concentration: 19.42 mg/L, pH: 4.59, reaction time: 36.17 resulted in 98.71% removal. adsorption isotherm kinetics data showed pseudo-second-order Langmuir models were appropriate Furthermore, demonstrated 90% elimination after up six repeated cycles regeneration reusability testing. Finally, nZVI/CS can be an effective promising solution removing

Language: Английский

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Ultrasonic-assisted synthesis of TiO2/MWCNT/Pani nanocomposite: Photocatalyst characterization and optimization of efficient variables in the degradation of benzene via RSM-CCD

Powder Technology, Journal Year: 2023, Volume and Issue: 432, P. 119176 - 119176

Published: Nov. 19, 2023

Language: Английский

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Optimization of chloride ion removal from drinking water using graphene oxide modified with AgNO3 via CCD-based RSM method

Inorganic Chemistry Communications, Journal Year: 2023, Volume and Issue: 160, P. 111930 - 111930

Published: Dec. 23, 2023

Language: Английский

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