Magnetically separable CdS‐deposited Fe
            <sub>3</sub>
            O
            <sub>4</sub>
            ‐implanted ZnO microrods for solar photocatalysis

Karunakaran, C.; JebaSingh, I.; Vinayagamoorthy, P.; Jayabharathi, Jayaraman

doi:10.1049/mnl.2014.0234

Cited by 6 publications

(2 citation statements)

References 17 publications

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“…Recently, much research has been focused on the development of visible-light-responsive photocatalysts to take advantage of the solar light resources more effectively because visible light constitutes a larger proportion than UV light in solar light [10][11][12]. To extend the application of photocatalyst, ZnO nanorods (NRs)/ Fe 3 O 4 quantum dots (QDs) nanocomposites have been extensively investigated because of their proven potential use as the next-generation building blocks for photocatalysis due to the special morphology and the efficient absorption in the visible region [13,14]. However, the synthetic procedure of nanocomposites is rather complex and time-consuming [15,16].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of ZnO nanorods/Fe3O4 quantum dots nanocomposites and their solar light photocatalytic performance

Han

Cao

Yang

et al. 2015

J Mater Sci: Mater Electron

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ZnO nanorods (NRs)/Fe 3 O 4 quantum dots (QDs) nanocomposites were successfully synthesized via an easy electrostatic self-assembly method. The results showed that Fe 3 O 4 QDs with an average diameter of 4-5 nm were well dispersed on the surface of the ZnO NRs with an average diameter of 118 nm, forming ZnO NRs/Fe 3 O 4 QDs nanocomposites. The ZnO NRs/Fe 3 O 4 QDs nanocomposites were used as photocatalysts for the degradation of Rhodamine B under solar light irradiation. The kinetic rate constant of the ZnO NRs/Fe 3 O 4 QDs nanocomposites was two times higher than that of the ZnO NRs. The enhanced photocatalytic property was attributed to the extended absorption spectrum of the nanocomposites.

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Section: Introductionmentioning

confidence: 99%

Fabrication of ZnO nanorods/Fe3O4 quantum dots nanocomposites and their solar light photocatalytic performance

Han

Cao

Yang

et al. 2015

J Mater Sci: Mater Electron

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“…Between them, physical methods, such as biological methods (biodegradation) [3,4], adsorption [5,6] and chemical methods (chlorination, ozonation [7]) are the most frequently used. Photocatalysis is considered as one of the important and efficient approaches to dismiss the dyes in wastewater [8][9][10][11][12][13][14][15][16]. Different methods have been provided for the synthesis of nanoparticles such as chemical, physical and green methods [17,18].…”

mentioning

confidence: 99%

Green synthesis and characterisation of ZnMn ₂ O ₄ nanoparticles for photocatalytic degradation of Congo red dye and kinetic study

Fardood

Moradnia

Ramazani

2019

Micro & Nano Letters

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In this work, ZnMn 2 O 4 spinel nanoparticles were successfully synthesised by tragacanth gel through the easy and inexpensive novel sol-gel method. This technique has many strong points such as facile, economical, non-toxic and quickness in comparison with other methods. The zinc manganite nanoparticles were characterised by X-ray powder diffraction (XRD), transmission electron microscopy, field emission scanning electron microscopy, Fourier transform infrared spectroscopy and diffuse reflectance spectroscopy. The XRD pattern confirmed the formation of spinel tetragonal structure of ZnMn 2 O 4 nanoparticles with a crystallite size of 14 nm. The degradation of Congo red dye by synthesised nanoparticles was studied using employing UV-Vis spectroscopy. The ZnMn 2 O 4 NPs expressed high photocatalytic activity for degradation of Congo red dye at room temperature in aqueous solution so that 96% of Congo red was degraded in 15 min. The spinel ZnMn 2 O 4 photocatalyst provided total organic carbon removal as 45.2% in 15 min. The spinel ZnMn 2 O 4 NPs reusability was examined by administering the degradation of Congo red dye with the spent catalyst and it was considered that the photocatalyst did not exhibit any significant reduction in its activity even after three cycles.

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Synthesis of superparamagnetic biocidal superior solar photocatalytic Fe3O4-implanted Ag2S-capped ZnO micro-clubbells

2019

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Semiconductor-photocatalytic mineralization of organics is an emerging technology. However, recovery of the photocatalytic particles post pollutant-mineralization is a stumbling block for adoption of this technique. Implantation of magnetic core in the particulate photocatalyst ensures magnetic recovery. The magnetic core, deeply buried in the photocatalytic semiconductor lattice, is secluded from the photocatalyst/effluent interface and has insignificant influence on the photocatalytic processes. As the magnetic core is concealed its photocorrosion is overcome. With this, we report synthesis of Fe 3 O 4-implanted Ag 2 S-capped ZnO microstructure by a two-step hydrothermal process. Scanning electron micrograph shows the synthesized particles as micro-clubbell-shaped. The energy dispersive X-ray spectrum confirms the presence of the constituent elements and the elemental mapping images display the even distribution of the constituent elements in the micro-clubbells. The X-ray diffractogram and the Raman spectrum show ZnO in zincite structure and Ag 2 S in acanthite phase. The synthesized microstructure and precursor Fe 3 O 4 nanocrystals are superparamagnetic and their magnetic properties are comparable. The charge-transfer resistance of the microstructure is more than 20-fold that of Fe 3 O 4 nanocrystals (New J Chem 40:1845-1852, 2016). The micro-clubbells absorb in the entire visible region and displays strong absorption in the UV-A region. The microcomposite exhibits green and strong blue-green emissions and the lifetime of photogenerated charge carriers is 10 ps. The synthesized microsized clubbell is mesoporous and its specific surface area is comparable to those of nanostructured composites. The synthesized microcomposite (1) displays superior photocatalytic activity under natural sunlight and (2) is reusable and magnetically recoverable. In addition, the title microstructure exhibits bactericidal activity, even without direct illumination.

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Magnetically separable CdS‐deposited Fe ₃ O ₄ ‐implanted ZnO microrods for solar photocatalysis

Cited by 6 publications

References 17 publications

Fabrication of ZnO nanorods/Fe3O4 quantum dots nanocomposites and their solar light photocatalytic performance

Fabrication of ZnO nanorods/Fe3O4 quantum dots nanocomposites and their solar light photocatalytic performance

Green synthesis and characterisation of ZnMn ₂ O ₄ nanoparticles for photocatalytic degradation of Congo red dye and kinetic study

Synthesis of superparamagnetic biocidal superior solar photocatalytic Fe3O4-implanted Ag2S-capped ZnO micro-clubbells

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Magnetically separable CdS‐deposited Fe 3 O 4 ‐implanted ZnO microrods for solar photocatalysis

Cited by 6 publications

References 17 publications

Fabrication of ZnO nanorods/Fe3O4 quantum dots nanocomposites and their solar light photocatalytic performance

Fabrication of ZnO nanorods/Fe3O4 quantum dots nanocomposites and their solar light photocatalytic performance

Green synthesis and characterisation of ZnMn 2 O 4 nanoparticles for photocatalytic degradation of Congo red dye and kinetic study

Synthesis of superparamagnetic biocidal superior solar photocatalytic Fe3O4-implanted Ag2S-capped ZnO micro-clubbells

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Magnetically separable CdS‐deposited Fe ₃ O ₄ ‐implanted ZnO microrods for solar photocatalysis

Green synthesis and characterisation of ZnMn ₂ O ₄ nanoparticles for photocatalytic degradation of Congo red dye and kinetic study