Photocatalytic efficacy of supported tetrazine on MgZnO nanoparticles for the heterogeneous photodegradation of methylene blue and ciprofloxacin

Parvizi, Elham; Tayebee, Reza; Koushki, E.; Abdizadeh, Mojtaba Fattahi; Maleki, Behrooz; Audebert, Pierre; Galmiche, Laurent

doi:10.1039/c9ra04702f

Cited by 68 publications

(27 citation statements)

References 49 publications

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“…The primary reason for the result obtained was the limited production of active radicals, which were insufficient to degrade the higher concentration of MB dye 34 . Also, highly concentrated MB dye solution could decrease the penetration of photons in the solution phase and thus hampered with the photogeneration of electron-hole pairs 35 . It was observed that with the increase in the H 2 O 2 concentration, the MB degradation efficiency decreased by ~3-5% for all the photocatalysts (Fig.…”

Section: Resultsmentioning

confidence: 99%

Photocatalytic Degradation of Organic Pollutants over MFe2O4 (M = Co, Ni, Cu, Zn) Nanoparticles at Neutral pH

Gupta

Ghaffari

Kim

et al. 2020

Sci Rep

161

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in this study, we report a surfactant-mediated synthesis of ferrites (Mfe 2 o 4 : M = co, ni, cu, Zn) using the co-precipitation-oxidation method. The band gap calculated from UV-Visible diffuse reflectance spectra were found in the range of 1.11-1.81 eV. These ferrite nanocatalysts were studied for the photocatalytic degradation of multiple organic dyes in a 32 W UV-C/H 2 o 2 system. All the four ferrites showed an excellent dye degradation rate in the range of 2.065-2.417 min −1 at neutral pH. in the optimized condition, NiF was found to degrade 89%, 92%, 93%, and 78% of methylene blue, methyl orange, bromo green, and methyl red, respectively within 1 min of UV-irradiation. A 40% TOC removal was recorded after 5 min of degradation reaction, which increased to 60% after 50 min. Mechanism elucidated by scavenger studies and fluorescence spectroscopy revealed that • oH and holes were the primary reactive radicals responsible for the degradation process. ferrite photocatalysts showed an insignificant performance loss in seven consecutive cycles. The photocatalyst was found efficient in the presence of a high concentration of salts. thus, it was concluded that these photocatalysts are highly suitable for the remediation of dye-contaminated wastewater. The ever-increasing population, coupled with rapid urbanization and industrialization, have deteriorated the quality of life. Excessive contamination of water bodies could be a severe threat to both human beings and other life forms. Organic dyes are considered as one of the major pollutants discharged into the environment by textile, printing, food, and leather industries 1. Though a large segment of these synthetic dyes is non-toxic or less toxic, their presence in water increases the oxygen demand, which in turn affects aquatic animals 2. Among the dyes consumed in industries, up to 70% belong to azo dye family (those with azo-functional group "-N = N-"). Azo dyes have genotoxic, mutagenic, and carcinogenic effects on living beings 3. Some of the azo dyes are known to be carcinogenic in the non-cleaved state, and for many of the azo dyes, their cleaved products such as benzidine are known to induce tumors 4. Conventional biological, chemical, and physical methods like adsorption 5,6 , chemical precipitation 7 , and microbial degradation 8 have been established for the remediation of dye-contaminated wastewater. The practical application of these processes suffers due to high operational cost, sludge production, or formation of secondary pollutants. For a complete or partial degradation of organic dyes (into non-toxic byproducts), degradation by adopting the photocatalytic process is one of the viable options. In recent years, advanced oxidation processes based on the generation of highly reactive hydroxyl radicals have gained momentum for the degradation of toxic organic pollutants 9. Though the Fenton process is easier to operate, it suffers badly due to a slow regeneration of Fe 2+ ions 10. Thus, the ultraviolet radiation or electrochemical method is generally cou...

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Section: Resultsmentioning

confidence: 99%

Photocatalytic Degradation of Organic Pollutants over MFe2O4 (M = Co, Ni, Cu, Zn) Nanoparticles at Neutral pH

Gupta

Ghaffari

Kim

et al. 2020

Sci Rep

161

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“…Another reason for reduced degradation efficiency might be described by the Beer–Lambert law, according to which, with increase in the dye concentration, a decrease in the path length of photons entering solution was observed, which reduces the degradation efficiency. 83 , 84 Since the maximum efficiency is observed with 15 mg/L therefore, this concentration was taken as the optimized concentration for the remaining reactions.…”

Section: Resultsmentioning

confidence: 99%

Different Fuel-Adopted Combustion Syntheses of Nano-Structured NiCrFeO₄: A Highly Recyclable and Versatile Catalyst for Reduction of Nitroarenes at Room Temperature and Photocatalytic Degradation of Various Organic Dyes in Unitary and Ternary Solutions

et al. 2022

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As industrialization progresses, there is a large release of hazardous pollutants into the environment. These pollutants, which contain nitro compounds and organic dyes, are extremely dangerous due to their toxic and carcinogenic nature. An efficient, environmentally benign, and economical catalyst to degrade environmental pollutants or convert them into useful products has been of sustained interest in recent years. In this context, we report a simple and inexpensive combustion fabrication of NiCrFeO 4 using different fuels such as glycine, polyvinyl alcohol (PVA), and urea, showing tremendous catalytic and photocatalytic functionalities. Rietveld refinement and X-ray diffraction studies confirmed the formation of single-phase ferrites, with crystallite sizes ranging from 3.9 to 43.31 nm. The values of optical band gap, obtained from the diffused reflectance spectroscopy technique, lie in the visible region range (1.50–1.60 eV), and hence, all the synthesized ferrites can act as good photocatalysts in the presence of visible light. All the NCF nanocatalysts were utilized for the reduction of nitroarenes and photocatalytic degradation of various cationic (RhB and MB) and anionic (MO) dyes and their mixture. NCFP displayed excellent activity for the reduction and oxidation reactions owing to its large surface area and low optical band gap. Furthermore, the photo-oxidative degradation by NCFP was also enhanced due to its low recombination of charge carriers as confirmed by the photoluminescence (PL) spectroscopy. NCFP efficiently reduces nitrobenzene to aminobenzene with 95% yield using sodium borohydride as the reducing agent in methanol medium at RT in 10 min. The results of photocatalytic activity have shown that the degradation efficiency of NCFP follows the order RhB > MB > MO in their unitary solution. Furthermore, in the case of the mixture of dyes, NCFP showed enhanced photocatalytic degradation for cationic dyes (RhB and MB) compared to that of anionic dye (MO). From the performance point of view, this catalyst can be useful in industrial application because of its high stability, greater catalytic efficiency, and cost-effectiveness.

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“…Various techniques, such as metal/non-metal doping, heterojunction and hybrid composite formation, and so on, have been used to mitigate the aforementioned disadvantages. For example, Parvizi et al [18] synthesized and tested MgZnO@-SiO 2 nanoparticles for the photocatalytic degradation of ciprofloxacin and methylene blue. The scientists claim that immobilizing tetrazine onto MgZnO@SiO 2 À Cl resulted in a photocatalyst with improved performance that degraded 95 % of the methylene blue dye after 20 min under optimal conditions.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Degradation of Toxic Phenolic Compound and Bacterial Inactivation by Ternary Li doped Zn_0.5Ni_0.5Fe₂O₄

2022

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Conventional methods are inefficient to treat water contaminated with persistent organic contaminants. To decontaminate bacteria and 2,4,5‐trichlorophenol (TCP) contaminated water, a heterogeneous photocatalysis‐based advanced oxidation process was applied in this study. A Li‐doped ternary Zn0.5Ni0.5Fe2O4 (ZNF) photocatalyst (Li/ZNF) was synthesized via a facile co‐precipitation technique and characterized. The Li/ZNF has a sufficient specific surface area (69.8 m2.g−1), and an appropriate bandgap of 2.89 eV. Under optimal conditions, 10 mg of Li/ZNF photocatalyst degraded 80 % of 50 mg L−1 TCP in 6 h at pH 3 in the presence of 4 mM H2O2. After use, the Li/ZNF photocatalyst was magnetically separated and reused numerous times, with an efficiency of 66 % after the fifth reuse cycle. In the antibacterial time‐kill assay, 15 and 25 mg of Li/ZNF inhibited 1×107 CFU.mL−1 of S. Aureus and E. coli bacteria after 60 min of UV exposure, respectively.

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Photocatalytic efficacy of supported tetrazine on MgZnO nanoparticles for the heterogeneous photodegradation of methylene blue and ciprofloxacin

Abstract: MgZnO@SiO2-tetrazine nanoparticle was synthesized and its photocatalytic efficiency was demonstrated in the decomposition of methylene blue (MB) and ciprofloxacin.

Cited by 68 publications

References 49 publications

Photocatalytic Degradation of Organic Pollutants over MFe2O4 (M = Co, Ni, Cu, Zn) Nanoparticles at Neutral pH

Photocatalytic Degradation of Organic Pollutants over MFe2O4 (M = Co, Ni, Cu, Zn) Nanoparticles at Neutral pH

Different Fuel-Adopted Combustion Syntheses of Nano-Structured NiCrFeO₄: A Highly Recyclable and Versatile Catalyst for Reduction of Nitroarenes at Room Temperature and Photocatalytic Degradation of Various Organic Dyes in Unitary and Ternary Solutions

Photocatalytic Degradation of Toxic Phenolic Compound and Bacterial Inactivation by Ternary Li doped Zn_0.5Ni_0.5Fe₂O₄

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Photocatalytic efficacy of supported tetrazine on MgZnO nanoparticles for the heterogeneous photodegradation of methylene blue and ciprofloxacin

Abstract: MgZnO@SiO2-tetrazine nanoparticle was synthesized and its photocatalytic efficiency was demonstrated in the decomposition of methylene blue (MB) and ciprofloxacin.

Cited by 68 publications

References 49 publications

Photocatalytic Degradation of Organic Pollutants over MFe2O4 (M = Co, Ni, Cu, Zn) Nanoparticles at Neutral pH

Photocatalytic Degradation of Organic Pollutants over MFe2O4 (M = Co, Ni, Cu, Zn) Nanoparticles at Neutral pH

Different Fuel-Adopted Combustion Syntheses of Nano-Structured NiCrFeO4: A Highly Recyclable and Versatile Catalyst for Reduction of Nitroarenes at Room Temperature and Photocatalytic Degradation of Various Organic Dyes in Unitary and Ternary Solutions

Photocatalytic Degradation of Toxic Phenolic Compound and Bacterial Inactivation by Ternary Li doped Zn0.5Ni0.5Fe2O4

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Product

Resources

About

Different Fuel-Adopted Combustion Syntheses of Nano-Structured NiCrFeO₄: A Highly Recyclable and Versatile Catalyst for Reduction of Nitroarenes at Room Temperature and Photocatalytic Degradation of Various Organic Dyes in Unitary and Ternary Solutions

Photocatalytic Degradation of Toxic Phenolic Compound and Bacterial Inactivation by Ternary Li doped Zn_0.5Ni_0.5Fe₂O₄