Z-scheme recyclable photocatalysts based on flower-like nickel zinc ferrite nanoparticles/ZnO nanorods: Enhanced activity under UV and visible irradiation

Wen-da, Wang; Li, Ning; Hong, Kunquan; Guo, Haowen; Ding, Ran; Xia, Zhu-Hong

doi:10.1016/j.jallcom.2018.11.075

Cited by 22 publications

(5 citation statements)

References 39 publications

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“…When the CuFe 2 O 4 content was increased from 2 to 8 wt %, the produced NCs exhibited absorption in the range of 449−453 nm, which are in lower wavelengths when compared to the CuFe 2 O 4 NPs, with a maximum absorption at 456 nm, indicating that the loading process was effective. 77,78 Based on the findings, incorporating CuFe 2 O 4 NPs into the zeolite framework causes a change in the absorption wavelength toward higher values. This shift suggests that the loading processes utilized to integrate CuFe 2 O 4 into the zeolite were successful in developing NCs with altered optical properties.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Zeolite-Copper Ferrite Nanocomposites with Improved Antibacterial Activity and Reusability for Biomedical Applications

Dabagh,

Haris,

Isfahani

et al. 2023

ACS Appl. Nano Mater.

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Zeolite/CuFe2O4 nanocomposites (NCs) were synthesized using the coprecipitation technique with different concentrations of CuFe2O4 nanoparticles (NPs) to optimize the capacity of zeolite to cation exchange and study its antibacterial activities. UV–vis, Fourier-transform infrared (FTIR), X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energy-dispersive X-ray (EDX), Brunauer–Emmett–Teller (BET), and thermogravimetric analysis were utilized to characterize the NCs. XRD patterns revealed a slight shift in the peaks while the amount of CuFe2O4 increased. The CuFe2O4 NPs were distributed uniformly throughout the zeolite framework, and the basic structure of the zeolite was intact, as shown by FESEM and EDX. The addition of 6 wt % CuFe2O4 NPs to the zeolite framework reduced the BET-specific surface area from 336 to 187 m2/g. The thermal stability of the samples increased as the amount of CuFe2O4 NPs increased. Magnetic saturation of NCs was in the range of 10–41 emu/g, indicating suitability for manipulation under an external magnetic field. NCs (6 wt %) demonstrated significant antibacterial activity against different species of bacteria. The efficacy of the antibacterial agent enhanced with increasing the CuFe2O4 NPs, reaching 98% against Escherichia coli. Antibacterial activity was also studied throughout the sequential magnetic separation and recycling phases, and nanocomposite had a strong antibacterial activity after 7 cycles of recycling, making them potentially valuable tools in drug delivery systems, wound healing and tissue engineering, and other biomedical applications.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Zeolite-Copper Ferrite Nanocomposites with Improved Antibacterial Activity and Reusability for Biomedical Applications

Dabagh,

Haris,

Isfahani

et al. 2023

ACS Appl. Nano Mater.

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“…This system conventionally consists of an H 2 production photocatalyst (HPP) or reduction photocatalyst (RP), O 2 production photocatalyst (OPP) or oxidation photocatalyst (OP), and redox mediator. Z‐scheme photocatalysts are divided into indirect and direct Z schemes [103]. The indirect Z‐scheme type is redox‐mediated and all solid state, where the photogeneration charge carrier transport path requires an electron mediator [104].…”

Section: Heterojunctionmentioning

confidence: 99%

Advances in Rare Earth‐Doped ZnO Photocatalysts: Enhancing Photogenerated Electron‐Hole Pairs for Radical Atom Generation

Hasanah,

Ikbal,

Tahir

2024

ChemBioEng Reviews

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Zinc oxide (ZnO) is a promising material with a diverse range of applications, spanning gas sensing, photonics, photovoltaics, energy conversion, water splitting, photocatalysis, and transparent trapping. However, ZnO limited responsiveness to visible light affected to low photogenerated electron‐hole pairs (charge), low quantum efficiency, and high recombination of charge. In this review, we are addressing innovative strategies, including incorporation rare earth elements as a trap of electron to reduce recombination charge via ZnO doping from analysis 118 referenced sources. We found that hydrothermal shows very good methods for boosting efficiency up to 100 % within 60‐min. We found that for rare‐earth metals La and Ce as a doping show highest efficiency up to 100 % within 120 min irradiations, means that efficient as a trap for reducing recombination of charge. The potential of rare earth doped ZnO will enhance photogenerated electron‐hole pairs, catalyzing the generation of radical atoms via oxidation and reduction reactions. This review encapsulates the most current findings, it serves as a valuable resource for scholars seeking to advance their understanding of rare earth doped ZnO photocatalysts and developing innovative photocatalytic technologies.

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“… The SEM images of ZnFe 2 O 4 with different morphologies: ( a ) nanowire (field emission SEM) [ 112 ] (reprinted with permission from [ 112 ] Ghazkoob et al, 2022); ( b ) hollow nanofibers [ 113 ] (reprinted with permission from [ 113 ] Liu et al, 2019); ( c ) flower-shaped nanorods [ 91 ] (reprinted with permission from [ 91 ] Wang et al, 2019); ( d ) nanowire arrays [ 114 ] (reprinted with permission from [ 114 ] Chen et al, 2020); ( e ) yolk-shell [ 99 ] (reprinted with permission from [ 99 ] Li et al, 2019); ( f ) hollow cube skeleton [ 115 ] (reprinted with permission from [ 115 ] Cao et al, 2018). …”

Section: Figurementioning

confidence: 99%

Progress in the Preparation and Modification of Zinc Ferrites Used for the Photocatalytic Degradation of Organic Pollutants

Zhu

Chen

et al. 2022

IJERPH

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Zinc ferrite is a type of photocatalytic material with high physicochemical stability, narrow band gap, high carrier separation efficiency, high porosity, and paramagnetism, which makes it easy to recover. Thus, zinc ferrite is widely used as a photocatalyst in water treatment. In this paper, the preparation principles as well as the advantages and disadvantages of typical methods used to prepare zinc ferrite including hydrothermal, co-precipitation, sol-gel, and other novel methods such as biosynthesis have been summarized. Modification methods such as elemental doping, composite formation, and morphological modification have been highlighted. Using these modification methods, the catalytic activity of zinc ferrite toward the photocatalytic degradation of organic pollutants in water has been enhanced. Biosynthesis is regarded as a promising preparation method that uses biological materials instead of chemical materials to achieve the large-scale preparation of zinc ferrite using low cost, energy efficient, and environmentally friendly processes. Meanwhile, the combination of multiple modification techniques to enhance the photocatalytic performance of zinc ferrite will be an important research trend in the future.

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Z-scheme recyclable photocatalysts based on flower-like nickel zinc ferrite nanoparticles/ZnO nanorods: Enhanced activity under UV and visible irradiation

Cited by 22 publications

References 39 publications

Zeolite-Copper Ferrite Nanocomposites with Improved Antibacterial Activity and Reusability for Biomedical Applications

Zeolite-Copper Ferrite Nanocomposites with Improved Antibacterial Activity and Reusability for Biomedical Applications

Advances in Rare Earth‐Doped ZnO Photocatalysts: Enhancing Photogenerated Electron‐Hole Pairs for Radical Atom Generation

Progress in the Preparation and Modification of Zinc Ferrites Used for the Photocatalytic Degradation of Organic Pollutants

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