Visible light photocatalytic activity of Fe3+-doped ZnO nanoparticle prepared via sol–gel technique

Ba‐Abbad, Muneer M.; Kadhum, Abdul Amir H.; Mohamad, Abu Bakar; Takriff, Mohd Sobri; Sopian, Kamaruzzaman

doi:10.1016/j.chemosphere.2012.12.055

Cited by 279 publications

(81 citation statements)

References 56 publications

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“…This is unlike other reports claiming that diffraction line shifts prove the replacement of Zn(II) by Fe(III) at the regular ZnO Wurtzite lattice sites [20,21]. We exclude this possibility in our study because of the almost negligible shift in the XRD data.…”

Section: As Seen Incontrasting

confidence: 80%

Fe-lactate mediated formation of ZnO sols and self-organized nanorod assemblies

Aparicio

Filip²,

Šišková³

et al. 2014

J Sol-Gel Sci Technol

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International audienceHot ethanolic mixts. of hydrated Zn(II)- and Fe(II)-carboxylates (acetate and lactate) react to form yellow-orange colored Fe(III)xZnyOzOHw heteroclusters showing pronounced electronic resonances in the optical UV absorption spectra. On the addn. of LiOH to these polymol. sols, stable nanoparticulate Fe(III)-ZnO colloids are formed. During colloidal growth, 2-4 nm sized weakly crystd. Wurtzite nanoparticles are exclusively formed even in the presence of high Fe content up to 20 at.%. The presence of Fe(III) in the ZnO condensation process retards the nanoparticle growth and blocks the thermal crystn. and size enhancement up to 250 °C. The produced 0.5 M Fe(III)-ZnO sols are useful for film formation processes. From at. force microscopy-AFM, SEM-SEM and X-ray diffraction-XRD studies, we note important differences in shape and morphol. of the thermally annealed Fe(III)-ZnO layers depending on the iron carboxylate employed. Surprisingly, Fe(II)-lactate derived coatings are carrying vertically oriented cone-shaped aggregates composed of 60-120 nm long primary nanorods. Contrary, Fe(II)-acetate based synthesis gave sand-dune like film morphologies contg. spherical 12 nm sized nanocrystallites. All film samples possess mesoporosity with pore size ranging between 5 and 20 nm

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Section: As Seen Incontrasting

confidence: 80%

Fe-lactate mediated formation of ZnO sols and self-organized nanorod assemblies

Aparicio

Filip²,

Šišková³

et al. 2014

J Sol-Gel Sci Technol

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“…Various morphologies of ZnO nanomaterials undoped or doped with transition metal or rare earth metal were reported for photodegradation of phenol, 2,4-dichlorophenol (2,4-DCP), and 2-chlorophenol etc, especially by Sin et al [255][256][257][258][259][260][261]. Sm-doped ZnO nanorods and rare earth metal (Eu-, Ce-, Sm-) doped ZnO hierarchical micro/nanospheres were all successfully prepared for the photodegradation of phenol and 2,4-DCP [255][256][257][258][259].…”

Section: Photo-degradation Of Phenol and Other Pollutantsmentioning

confidence: 99%

The Applications of Morphology Controlled ZnO in Catalysis

et al. 2016

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Zinc oxide (ZnO), with the unique chemical and physical properties of high chemical stability, broad radiation absorption range, high electrochemical coupling coefficient, and high photo-stability, is an attractive multifunctional material which has promoted great interest in many fields. What is more, its properties can be tuned by controllable synthesized morphologies. Therefore, after the success of the abundant morphology controllable synthesis, both the morphology-dependent ZnO properties and their related applications have been extensively investigated. This review concentrates on the properties of morphology-dependent ZnO and their applications in catalysis, mainly involved reactions on green energy and environmental issues, such as CO 2 hydrogenation to fuels, methanol steam reforming to generate H 2 , bio-diesel production, pollutant photo-degradation, etc. The impressive catalytic properties of ZnO are associated with morphology tuned specific microstructures, defects or abilities of electron transportation, etc. The main morphology-dependent promotion mechanisms are discussed and summarized.

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“…It can be observed that when a 5 wt% of Cd is doped into the ZnO, the photocatalytic activity increases in comparison with the undoped ZnO, but further increases in the dopant concentration result in a decrease in photocatalytic activity [40].…”

Section: Photocatalytic Activitymentioning

confidence: 98%

Optical, structural, and photocatalytic properties of Cd-doped ZnO powders prepared via sol–gel method

Khodadadi

Bordbar

Yeganeh-Faal³

2015

J Sol-Gel Sci Technol

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In the present study, undoped ZnO and CdZnO nanostructures with different weight ratios of cadmium were synthesized by the sol-gel method. Structural and optical properties were investigated by Fourier transform spectroscopy, UV-Vis spectroscopy, scanning electron microscopy, energy-dispersive analytical X-ray, X-ray diffraction, and photoluminescence spectroscopy methods. Moreover, the direct band gap is calculated by Tauc's approach. Furthermore, photocatalytic activity of all samples has been investigated under UV irradiation in an aqueous medium. Compared with pure ZnO, the band gap of the Cd-ZnO decreases and depends on the content of dopants. In addition, photocatalytic activity improves in the presence of a small amount (5 wt%) of cadmium dopant. Graphical Abstract

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Visible light photocatalytic activity of Fe3+-doped ZnO nanoparticle prepared via sol–gel technique

Cited by 279 publications

References 56 publications

Fe-lactate mediated formation of ZnO sols and self-organized nanorod assemblies

Fe-lactate mediated formation of ZnO sols and self-organized nanorod assemblies

The Applications of Morphology Controlled ZnO in Catalysis

Optical, structural, and photocatalytic properties of Cd-doped ZnO powders prepared via sol–gel method

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