Synthesis, magnetic properties and X-ray analysis of Zn0.97X0.03O nanoparticles (X = Mn, Ni, and Co) using Scherrer and size–strain plot methods

Zak, A. Khorsand; Majid, W.H. Abd.; Abrishami, M. Ebrahimizadeh; Yousefi, Ramin; Parvizi, Roghaieh

doi:10.1016/j.solidstatesciences.2012.01.019

Cited by 137 publications

(19 citation statements)

References 25 publications

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“…The X-ray diffraction (XRD) was measured by using a D/max-Ra X-ray diffractometer (Ouyatu, Japan, Cu Kα radiation = 1.54 Å) in an angular range of 10–80° (2θ) with a step of 0.02° (2 θ ). Scherer Equation [ 18 ] is used to calculate the average grain size of ZnO nanoparticles:

where K is the shape factor constant (0.94); λ is X-ray wavelength; D is the grain size; θ is the diffraction angle; β is the diffraction peak half width.…”

Section: Methodsmentioning

confidence: 99%

Preparation and Characterization of ZnO Nanoparticles Supported on Amorphous SiO2

2017

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In order to reduce the primary particle size of zinc oxide (ZnO) and eliminate the agglomeration phenomenon to form a monodisperse state, Zn2+ was loaded on the surface of amorphous silica (SiO2) by the hydrogen bond association between hydroxyl groups in the hydrothermal process. After calcining the precursors, dehydration condensation among hydroxyl groups occurred and ZnO nanoparticles supported on amorphous SiO2 (ZnO–SiO2) were prepared. Furthermore, the SEM and TEM observations showed that ZnO nanoparticles with a particle size of 3–8 nm were uniformly and dispersedly loaded on the surface of amorphous SiO2. Compared with pure ZnO, ZnO–SiO2 showed a much better antibacterial performance in the minimum inhibitory concentration (MIC) test and the antibacterial properties of the paint adding ZnO–SiO2 composite.

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where K is the shape factor constant (0.94); λ is X-ray wavelength; D is the grain size; θ is the diffraction angle; β is the diffraction peak half width.…”

Section: Methodsmentioning

confidence: 99%

Preparation and Characterization of ZnO Nanoparticles Supported on Amorphous SiO2

2017

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“…The crystalline structures of washed clay (B-W, V-W and R-W) and of the composites (B-TiO 2 , V-TiO 2 and R-TiO 2 ) were comparatively investigated. The crystallite sizes were calculated using the Scherrer formula, Equation (2) [15].…”

Section: The Characterization Of Composites Materialsmentioning

confidence: 99%

“…In system containing two or more pollutants and the substrate, several adsorption processes develop/occur [13][14][15][16]:…”

Section: The Adsorption Mechanismmentioning

confidence: 99%

“Titanium Oxide-Clay” as Adsorbent and Photocatalysts for Wastewater Treatment

Guillaume¹,

Chelaru²,

Vişa³

et al. 2018

J Membr Sci Technol

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A novel composite based on Titanium oxide and clays hydrothermally was synthesized to be used as substrate in advanced treatment of wastewaters. The treatment consists of one single step process combining photocatalysis and adsorption. The composite's crystalline structure is investigated by X-ray diffraction and FTIR, while atomic force microscopy (AFM) and scanning electron microscopy (SEM) are used to analyze the surface morphology. The adsorption capacity and photocatalytic properties of the material are tested on pollutants matrix containing dye (Methylene Blue) and heavy metal (cadmium cation). The results under optimized conditions indicate a good removal efficiency using this novel composite material.

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“…The peaks for Sr 2 TiO 4 are observed at 2θ = 24.076, 28.386, 31.464, 32.656, 35.673, 42.899, 43.217, 43.852, 46.791, 55.049, 55.605, 56.319, 57.431, 65.452, and 68.390°, which are assigned to the (011), (004), (013), (110), (112), (015), (006), (114), (020), (116), (024), (017), (123), (026), and (220) planes of Sr 2 TiO 4 , respectively, identifying it as a layered perovskite-type tetragonal structure (JCPDS 00-039-1471) 57 . The crystallite size of Sr 2 TiO 4 calculated using Scherer’s equation based on the (013) plane is 12.856 Å 58 . After hydrogen treatment, an anatase TiO 2 peak is observed at 2θ = 25.429°.…”

Section: Resultsmentioning

confidence: 99%

Surface modification of layered perovskite Sr2TiO4 for improved CO2 photoreduction with H2O to CH4

Kwak

Yeon

Park

et al. 2017

Sci Rep

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Layered perovskite Sr2TiO4 photocatalyst was synthesized by using sol-gel method with citric acid. In order to increase the surface area of layered perovskite Sr2TiO4, and thus to improve its photocatalytic activity for CO2 reduction, its surface was modified via hydrogen treatment or exfoliation. The physical and chemical properties of the prepared catalysts were characterized by X-ray diffraction, high-resolution transmission electron microscopy, elemental mapping analysis, energy-dispersive X-ray spectroscopy, N2 adsorption-desorption, UV-Vis spectroscopy, X-ray photoelectron spectroscopy, photoluminescence, and electrophoretic light scattering. CO2 photoreduction was performed in a closed reactor under 6 W/cm2 UV irradiation. The gaseous products were analyzed using a gas chromatograph equipped with flame ionization and thermal conductivity detectors. The exfoliated Sr2TiO4 catalyst (E-Sr2TiO4) exhibited a narrow band gap, a large surface area, and high dispersion. Owing to these advantageous properties, E-Sr2TiO4 photocatalyst showed an excellent catalytic performance for CO2 photoreduction reaction. The rate of CH4 production from the photoreduction of CO2 with H2O using E-Sr2TiO4 was about 3431.77 μmol/gcat after 8 h.

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Synthesis, magnetic properties and X-ray analysis of Zn0.97X0.03O nanoparticles (X = Mn, Ni, and Co) using Scherrer and size–strain plot methods

Cited by 137 publications

References 25 publications

Preparation and Characterization of ZnO Nanoparticles Supported on Amorphous SiO2

Preparation and Characterization of ZnO Nanoparticles Supported on Amorphous SiO2

“Titanium Oxide-Clay” as Adsorbent and Photocatalysts for Wastewater Treatment

Surface modification of layered perovskite Sr2TiO4 for improved CO2 photoreduction with H2O to CH4

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