Spinel ZnFe2O4 nanoplates embedded with Ag clusters: Preparation, characterization, and photocatalytic application

Cao, Xuebo; Gu, Li; Lan, Xianmei; Zhao, Cui; Yao, Dan; Sheng, Wenjun

doi:10.1016/j.matchemphys.2007.05.033

Cited by 68 publications

(53 citation statements)

References 19 publications

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“…Their magnetic properties make them useful in magnetic resonance imaging (MRI), electronic devices, information storage, and drug delivery [9]. In recent years, many methods have been reported for the synthesis of various interesting ZnFe2O4 nanostructures, including nanofibres [11], nanotubes [12], nanoplates [13], quasi-cubes [14] and hollow spherical structures [15]. For example, fibre-like ZnFe2O4 nanocrystals were obtained by thermal treatment of precursors [11].…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis of Spinel Nanocrystalline ZnFe2O4: Enhanced Photocatalytic and Microbial Applications

Suppuraj¹,

Thirunarayanan²,

Swaminathan³

et al. 2017

Materials Science and Applied Chemistry

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-Spinel ZnFe2O4 was developed successfully as a heterogeneous-Fenton catalyst for the degradation of Reactive Yellow 86 (RY 86) under UV light. The ZnFe2O4 was characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), field emission scanning electron microscopy (FE-SEM) and UV-diffuse reflectance spectroscopy (UV-DRS). FE-SEM reveals that the some of the particles sizes are in the range from 10 nm to 50 nm. The photocatalytic performance of ZnFe2O4 was evaluated by degradation of RY 86 dye solution under UV light. The degradation rate was highly influenced by pH, initial concentrations of H2O2 and catalyst concentration. The results indicated that ZnFe2O4 could be used as a photocatalyst for treatment of industrial coloured wastewater. The catalyst was reused for five consecutive runs without significant change in its activity. Moreover, the antibacterial effects were investigated.

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Section: Introductionmentioning

confidence: 99%

Facile Synthesis of Spinel Nanocrystalline ZnFe2O4: Enhanced Photocatalytic and Microbial Applications

Suppuraj¹,

Thirunarayanan²,

Swaminathan³

et al. 2017

Materials Science and Applied Chemistry

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“…4 The spinel crystal structure enhances the effciency of light absorption due to the available extra sites in the crystal lattice. 5 Some organic molecules have been decomposed under UV irradiation in the presence of different spinels as pho- 8 and methylene blue by ZnFe 2 O 4 nanorods. 9 There are not many data available for CoFe 2 O 4 used as a photocatalyst, but it has been used for decomposition of H 2 O 2 .…”

Section: Introductionmentioning

confidence: 99%

Mixed Metal Oxides of the Type CoxZn1–xFe2O4 as Photocatalysts for Malachite Green Degradation Under UV Light Irradiation

Tzvetkov¹,

Milanova²,

Cherkezova‐Zheleva

et al. 2017

ACSi

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A combination of thermal and mechanical (high energy ball milling) treatment was applied in an attempt to obtain polycrystalline mixed metal binary and ternary oxides of the type Co x Zn 1-x Fe 2 O 4 (x = 0; 0.25; 0.5; 0.75; 1). The synthetic procedure used successfully produced single-phased, homogeneous ZnFe 2 O 4 , CoFe 2 O 4 , and Co 0.75 Zn 0.25 Fe 2 O 4 , as well as mixed oxides, whose composition depended both on the duration of the high energy ball milling and the ratio Zn(II)/Co(II). The formation of spinel-like structures was proved by XRD, Mössbauer spectroscopy and Raman spectroscopy. For the characterization of the samples low-temperature N 2 adsorption, UV/Vis spectroscopy and transmission electron microscopy were applied. The energy band gap of the samples was calculated, suggesting they are promising photocatalysts. The decomposition of the Malachite Green in model water solutions under UV-light irradiation was successfully achieved in the presence of the samples as photocatalysts. The highest rate constant was obtained for the sample synthesized at longer milling time in combination with higher Zn(II)/Co(II) ratio. The photocatalytic activity of the ternary mixed oxides was compared with the pure hematite, α-Fe 2 O 3 , and the binary ZnFe 2 O 4 and CoFe 2 O 4 ferrites with spinel structure that were treated in the same way. A synergetic effect of α-Fe 2 O 3 and the spinel-like structure on the photocatalytic properties of ternary mixed metal oxides was detected.

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“…Among them, ZnFe 2 O 4 has been considered as a promising photocatalyst owing to its narrow band gap(1.9 eV). However, its photocatalytic property is rather poor because of the low valence band potential and the poor efficiency of photoelectric conversion [9,10] . The photocatalytic properties of ZnFe 2 O 4 can be improved via combining with graphene, doping titania powder and substituting iron in octahedral positions with different trivalent cations [11][12][13][14] .…”

Section: Introductionmentioning

confidence: 99%

Improved visible-light photocatalytic properties of ZnFe2O4 synthesized via sol-gel method combined with a microwave treatment

Feng

Wang

Zou

et al. 2015

Chem. Res. Chin. Univ.

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ZnFe 2 O 4 (ZFO) was synthesized via a sol-gel method firstly, then the ZFO was irradiated with microwave treatment to obtain M-ZFO using NH 4 Cl as dispersant for 10 min to improve the photocatalytic activity. Large particles of ZFO were broken into small and uniform particles by the gases of hydrogen chlorine and ammonia during the decomposition of NH 4 Cl. Compared to ZnFe 2 O 4 without microwave treatment(ZFO), M-ZFO exhibits smaller particle size, higher surface area and larger saturation magnetization. More importantly, the photocatalytic activity of M-ZFO for methylene blue was increased by 25% compared with that of ZFO.

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Spinel ZnFe2O4 nanoplates embedded with Ag clusters: Preparation, characterization, and photocatalytic application

Cited by 68 publications

References 19 publications

Facile Synthesis of Spinel Nanocrystalline ZnFe2O4: Enhanced Photocatalytic and Microbial Applications

Facile Synthesis of Spinel Nanocrystalline ZnFe2O4: Enhanced Photocatalytic and Microbial Applications

Mixed Metal Oxides of the Type CoxZn1–xFe2O4 as Photocatalysts for Malachite Green Degradation Under UV Light Irradiation

Improved visible-light photocatalytic properties of ZnFe2O4 synthesized via sol-gel method combined with a microwave treatment

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