Preparation and characterization of TiO<sub>2</sub>/ZnO/CuO nanocomposite and application for phenol removal from wastewaters

Mohammadi, Mohammad Javad; Sabbaghi, Samad; Sadeghi, H.; Zerafat, M. M.; Pooladi, R.

doi:10.1080/19443994.2014.968877

Cited by 23 publications

(4 citation statements)

References 43 publications

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“…Upon 120 min irradiation, the bands at 1541 cm −1 (phenyl νCC), 1522 cm −1 (naphthyl νCC), 1514 cm −1 (νCC, νCN), 1155 cm −1 (aromatic βCH), 1238 cm −1 and 1099 cm −1 (ν-OSO 2 O-group), 999 cm −1 and 956 cm −1 (naphthyl ρCH), 847 cm −1 (aliphatic νCC bond), 775 cm −1 (deformation of -OSO 2 O group), 681 cm −1 (NH 2 wagging mode), 554 cm −1 (ν-SO 2 -), and 521 cm −1 (naphthyl δCCC) were all related to RB5. The bands associated with LF were observed at 1472 cm −1 and 1398 cm −1 (impurity scattering); 1300 cm −1 (two-phonon scattering of O 2− ); 1155 cm −1 , 497 cm −1 , and 442 cm −1 (one phonon scattering); and 646 cm −1 (two-phonon scattering or impurity scattering) in accordance with previous findings [44][45][46][47][48][49][50][51]. These bands were observed with minor shifts in the Raman spectra obtained upon irradiation periods of 180 min and 240 min.…”

Section: Raman Spectroscopy Analysessupporting

confidence: 92%

“…The characteristic bands of LF shifted to lower wavenumbers and were located at 1281 cm −1 (two-phonon scattering of O 2− ) and 595 cm −1 (two-phonon scattering or impurity scattering). The other bands at 1154 cm −1 , 488 cm −1 , and 432 cm −1 could be attributed to the one-phonon scattering of LF [44][45][46][47][48][49][50][51]. In the same manner, the bands appearing at 1154 cm −1 and 432 cm −1 might belong to the aromatic βCH and -SO 2 -moieties of RB5, respectively.…”

Section: Raman Spectroscopy Analysesmentioning

confidence: 81%

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More about Persulfate-Assisted Ferrilanthanide-Mediated Photocatalysis of Textile Industry Dye Reactive Black 5: Surface Properties and Structural Assessment

Arslan-Alaton¹,

Koba-Ucun²,

Türkten

et al. 2023

Water

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Color and organic matter removal from dyehouse effluent remains a challenging issue for the environmentalist and textile dyer. Until now, various treatment processes have been proposed with limited success. In this study, the textile dye and model industrial pollutant Reactive Black 5 (RB5; 20 mg/L) could be rapidly degraded by persulfate (PS)-enhanced photocatalytic treatment using a novel, home-made lanthanum iron oxide (LF; 0.5 g/L). LF-mediated heterogeneous photocatalysis was effective when the solution pH was kept below 4. The photocatalytic degradation of RB5 solution was enhanced in the presence of 0.6 and 1.2 mM PS. The dissolved organic carbon (DOC) content of the aqueous, hydrolyzed RB5 solution (initial DOC = 5.15 mg/L) was effectively reduced by LF/UV-A (LF = 0.5 g/L; 52–54% DOC removal after 150–180 min) and LF/PS/UV-A (LF = 0.5 g/L; 60–66% DOC removal after 120 min) treatments. LF photocatalyst could be reused in four consecutive cycles for complete color and partial DOC removals without significant deterioration of the treatment performance with the LF/PS/UV-A/pH 3 process. Instrumental analyses of LF’s surface morphology/chemical composition and structural features via EDAX/SEM/Raman/FTIR/UV-vis/fluorescence spectroscopy indicated that LF remained practically intact throughout photocatalytic treatment, though slight changes/decreases in particle size/partial surface deformation and agglomeration coverage were observed, particularly during LF/PS/UV-A treatment. The presence of RB5 and its degradation products on the LF surface revealed that surface adsorption played a major role in LF-mediated photocatalysis. The Fe-content did not deviate appreciably from its original value after photocatalytic treatment.

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Section: Raman Spectroscopy Analysessupporting

confidence: 92%

Section: Raman Spectroscopy Analysesmentioning

confidence: 81%

More about Persulfate-Assisted Ferrilanthanide-Mediated Photocatalysis of Textile Industry Dye Reactive Black 5: Surface Properties and Structural Assessment

Arslan-Alaton¹,

Koba-Ucun²,

Türkten

et al. 2023

Water

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“…Nowadays, in order to remove CFX in wastewater, many different methods have been presented, including photocatalysis [12][13][14], membrane [15][16][17], photo-Fenton [18], biological [19,20], and adsorption [21][22][23][24]. Indeed, the mentioned approaches not only have a couple of cons, but they also come with a large number of costs, which is why they are not suggested for this application and some of the treatment routes can result in the change in structures of organic molecules and the production of secondary products that are more perilous.…”

Section: Introductionmentioning

confidence: 99%

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

Moridi

Sabbaghi

Rasouli

et al. 2023

Water

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

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“…The TiO2 nanoparticles mesoporous structure, highly surface area and porous nature higher photocatalytic activity in order to adsorption capacity for TiO 2 nanoparticles. [2][3][4] The TiO2 nanoparticles noble metal doping (Au, Pt, Ag) for certain subtracting metal oxide, carbon, polymer enhancing catalytic performance of photo induced reaction under the illumination of UV light [5][6][7] . In this route employed for sensitizing TiO2 and have proved in significantly enhancing the photo activity of TiO2.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of TiO2@ZnO–Ag Nanocomposites and their Anti-inflammatory Activity

Pragathiswaran¹,

Smitha²

2020

IJPSRR

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Titanium dioxide (TiO2) is used for water purification, because many chemical compounds and microorganism can be decomposed by oxidation and reduction processes. In this study, the composite of TiO2 nanoparticles (NPs) @ mesoporous silica nanoparticles (MSNPs) (TiO2@ZnO) were prepared by the sol-gel method. The prepared TiO2@ZnO nanocomposite was modified by decorating silver nanoparticles (Ag NPs) (TiO2@ZnO-Ag) using a hydrothermal method. The composite was investigated for anti-inflammation of protein denaturation and proteinase inhibitory activity.

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Preparation and characterization of TiO₂/ZnO/CuO nanocomposite and application for phenol removal from wastewaters

Cited by 23 publications

References 43 publications

More about Persulfate-Assisted Ferrilanthanide-Mediated Photocatalysis of Textile Industry Dye Reactive Black 5: Surface Properties and Structural Assessment

More about Persulfate-Assisted Ferrilanthanide-Mediated Photocatalysis of Textile Industry Dye Reactive Black 5: Surface Properties and Structural Assessment

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

Synthesis of TiO2@ZnO–Ag Nanocomposites and their Anti-inflammatory Activity

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Preparation and characterization of TiO2/ZnO/CuO nanocomposite and application for phenol removal from wastewaters

Cited by 23 publications

References 43 publications

More about Persulfate-Assisted Ferrilanthanide-Mediated Photocatalysis of Textile Industry Dye Reactive Black 5: Surface Properties and Structural Assessment

More about Persulfate-Assisted Ferrilanthanide-Mediated Photocatalysis of Textile Industry Dye Reactive Black 5: Surface Properties and Structural Assessment

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

Synthesis of TiO2@ZnO–Ag Nanocomposites and their Anti-inflammatory Activity

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Preparation and characterization of TiO₂/ZnO/CuO nanocomposite and application for phenol removal from wastewaters