PtOx deposited Fe3O4-ZnO/TiO2 nanocomposites for photocatalytic H2 production under visible light

Al‐Thabaiti, Shaeel Ahmed; Khan, Zaheer; Bawaked, Salem M.; Alsheheri, Soad Z.; Mostafa, Mohamed Mokhtar M.; Malik, Maqsood Ahmad; Narasimharao, Katabathini

doi:10.1016/j.jece.2023.110615

Cited by 12 publications

(10 citation statements)

References 58 publications

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“…The peaks located at 724.36 eV and 710.59 eV, 726.82 eV and 712.78 eV should be assigned to Fe 2p1/2 and Fe 2p3/2 of Fe 2+ /Fe 3+ species [14,35]. The broad peak at 732.78 eV is detected, which could be caused by the interaction between the Fe species and ZnO [35]. The results indicate that an effective interface between Fe3O4 and ZnO exists.…”

Section: Microstructure Analysismentioning

confidence: 83%

“…The shakeup satellite peak (718.98 eV) indicates the presence of surface Fe 3 O 4 . The peaks located at 724.36 eV and 710.59 eV, 726.82 eV and 712.78 eV should be assigned to Fe 2p 1/2 and Fe 2p 3/2 of Fe 2+ /Fe 3+ species [14,35]. The broad peak at 732.78 eV is detected, which could be caused by the interaction between the Fe species and ZnO [35].…”

Section: Microstructure Analysismentioning

confidence: 91%

“…The XRD pa ern of Fe3O4/ZnO matches well wi of ZnO and commercial Fe3O4. The peaks observed at 2θ = 31.7°, 34.4°, 36.2°, 47.5 62.8°, and 67.9° in the Fe3O4/ZnO sample are closely ascribed to those of the Zn (JCPDS: 36-1451) [6,21,35]. Additionally, the peaks recorded at 2θ = 18.2°, 30.1 37.0°, 43.1°, 56.9°, and 62.5° in the Fe3O4/ZnO sample correspond to the distinct diff peaks of Fe3O4 crystal planes (111), ( 220), (311), ( 222), (400), (511), and (440), co with pure Fe3O4 pa erns (JCPDS: 19-0629) [30,32].…”

Section: Microstructure Analysismentioning

confidence: 94%

“…The technique becomes more commercially feasible when an external magnetic field is utilized because it facilitates the simple separation of photocatalysts, allowing multiple recycling of the photocatalysts. As a highly magnetic material, Fe 3 O 4 is preferred for synthesizing magnetic composites [14,33,35]. Fe 3 O 4 has been also widely studied as a good catalyst for Fenton-like reactions [32].…”

Section: Introductionmentioning

confidence: 99%

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Facile Preparation of Magnetically Separable Fe3O4/ZnO Nanocomposite with Enhanced Photocatalytic Activity for Degradation of Rhodamine B

Qi,

Wang,

Liu

et al. 2024

Nanomaterials

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Magnetic separation of photocatalysts holds great promise for water treatment. A magnetic separation method has a positive effect on the recovery of catalysts after degradation. In this paper, an efficient and reusable catalytic system is developed based on coating magnetic Fe3O4 by depositing Fe2+ on the surface of ZnO. The Fe3O4/ZnO nanocomposite exhibits enhanced performance for organic pollutant degradation. The Fe3O4/ZnO system demonstrates a high photocatalytic activity of 100% degradation efficiency in Rhodamine B (RhB) degradation under UV light irradiation for 50 min. The excellent photocatalytic activity is primarily due to the separation of photogenerated electron-hole pairs being facilitated by the strong interaction between Fe3O4 and ZnO. The induction of the magnetic Fe3O4 endows the Fe3O4/ZnO composite with superior magnetic separation capability from water. Experiments with different radical scavengers revealed that the hydroxyl radical (·OH) is the key reactive radical for the effective degradation of RhB. This work innovatively affords a common interfacial dopant deposition strategy for catalytic application in the degradation of organic dye pollutants and catalyst separation from wastewater efficiently.

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Section: Microstructure Analysismentioning

confidence: 83%

Section: Microstructure Analysismentioning

confidence: 91%

Section: Microstructure Analysismentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Facile Preparation of Magnetically Separable Fe3O4/ZnO Nanocomposite with Enhanced Photocatalytic Activity for Degradation of Rhodamine B

Qi,

Wang,

Liu

et al. 2024

Nanomaterials

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“…Compared with the spectrum of ZIF-8/LC, a Fe2p peak appeared in Fe 3 O 4 /ZnO/LC, while the peak of Zn2p was weakened in Fe 3 O 4 /ZnO/LC. This was probably due to the Fe element of Fe 3 O 4 and the formation of ZnO [ 41 ]. In Figure 1 d, the binding energies of 1021.70 and 1044.75 eV were assigned to Zn 2p 3/2 and Zn 2p 1/2 , respectively.…”

Section: Resultsmentioning

confidence: 99%

Magnetic Adsorbent Fe3O4/ZnO/LC for the Removal of Tetracycline and Congo Red from Aqueous Solution

Zhao,

Tang,

Chen

et al. 2023

Molecules

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Zeolitic imidazolate frameworks (ZIFs) can be used as an adsorbent to efficiently adsorb organic pollutants. However, ZIF nanoparticles are easy to form aggregates, hampering the effective and practical application in practical adsorption. In this study, the ZIF-8 was successfully loaded onto lignocellulose (LC) to further produce ZnO/LC by in situ growth method and hydrothermal treatment, and then Fe3O4 nanoparticles (Fe3O4 NPs) were loaded onto ZnO/LC to prepare magnetic Fe3O4/ZnO/LC adsorbent for removing tetracycline (TC) and congo red (CR) pollutants from aqueous solution. The adsorption properties of the adsorbent were systematically analyzed for different conditions, such as adsorbent dosage, solution pH, contact time, temperature and initial concentration. The experimental data were fitted using adsorption kinetic and isotherm models. The results showed that the pseudo-second-order model and Sips model were well fitted to the adsorption kinetic and adsorption isotherm, respectively. The adsorption capacities of TC and CR reached the maximum value of 383.4 mg/g and 409.1 mg/g in experimental conditions. The mechanism of the removal mainly includes electrostatic interaction, hydrogen bonding and π-π stacking. This novel adsorbent could be rapidly separated from the aqueous solution, suggesting its high potential to remove pollutants in wastewater.

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Boosting solar-light photocatalytic activity of Ni2P-decorated ZnCr2O4 nanofibers for H2 evolution and tetracycline elimination

Peng,

Luo,

Zheng

2024

Ceramics International

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PtOx deposited Fe3O4-ZnO/TiO2 nanocomposites for photocatalytic H2 production under visible light

Cited by 12 publications

References 58 publications

Facile Preparation of Magnetically Separable Fe3O4/ZnO Nanocomposite with Enhanced Photocatalytic Activity for Degradation of Rhodamine B

Facile Preparation of Magnetically Separable Fe3O4/ZnO Nanocomposite with Enhanced Photocatalytic Activity for Degradation of Rhodamine B

Magnetic Adsorbent Fe3O4/ZnO/LC for the Removal of Tetracycline and Congo Red from Aqueous Solution

Boosting solar-light photocatalytic activity of Ni2P-decorated ZnCr2O4 nanofibers for H2 evolution and tetracycline elimination

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