Cation substitution in ZnO obtained by mechanical milling

Damonte, L. C.; Hernández-Fenollosa, M.A.; Marı́, B.

doi:10.1016/j.jallcom.2006.08.202

Cited by 18 publications

(8 citation statements)

References 11 publications

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“…Figure 4 displays the average positron lifetime versus milling time for all compositions and doped oxides. Also shown are the results obtained for samples prepared in a different mechanical mill (less energetic, Retsch PMM4) where no incorporation was obtained after 20 h of milling [3]. From these results it is observed that τ ave is higher for short milling times than after prolonged periods of times.…”

Section: Resultsmentioning

confidence: 89%

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Dopants incorporation in ZnO mechanical milled powders sensed by positrons

2007

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M-doped ZnO (M: Cd, Mg) powders obtained by mechanical milling were analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM) and positron lifetime annihilation spectroscopy (PALS). The mixing of the oxides is followed by means of XRD and SEM. As milling proceeds, a clear reduction of grain size and homogenization are observed. The evolution of annihilation parameters with milling time and cation content were analyzed and related with the kind of mechanical induced defect involved. Ternary oxides Zn 1−x M x O were efficiency obtained for certain compositions. The results showed that positrons constitute a well suited probe to characterize the cation substitution in the ZnO oxide lattice.

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Section: Resultsmentioning

confidence: 89%

“…In a previous work we prepared ternary oxides Zn 1−x M x O (M: Cd, Mg) using a planetary ball milling without getting a complete mixture of the starting oxides [3]. Under different experimental conditions Mg substitution in ZnO was afterwards successfully obtained [4].…”

Section: Introductionmentioning

confidence: 99%

Dopants incorporation in ZnO mechanical milled powders sensed by positrons

2007

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“…Damonte et al [12] investigated the structural and magnetic properties of Zn 1Àx Co x O powders. Moreover, they also prepared Zn 1Àx Mg x O and Zn 1Àx Cd x O powders by milling for 1, 5, 10 and 20 h at 200 and 360 rpm and they found that the cation impurities produced a different signal in the PL spectra [13]. Dodd et al [3] studied the photocatalytic activity of Zn 1Àx Co x O and Zn 1Àx Mn x O powders that had been milled for 6 h. The photocatalytic activity of Zn 1Àx Co x O decreased with the doping content, but the activity of Zn 1Àx Mn x O increased with the doping content up to 20 mol%.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and optical properties of Zn1−xTixO nanoparticles prepared via a high-energy ball milling technique

Suwanboon

Amornpitoksuk

Bangrak

2011

Ceramics International

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“…Mechanochemical process is a type of mechanical alloying technique, which was reported by McCormick in 1989 for the first time [24]. Mechanochemical reaction is an effective, useful, and low-cost technique that can be nominated as an applicable route to prepare nanomaterials in various industrial fields [25]. A lot of research in this area remains to be done.…”

Section: Introductionmentioning

confidence: 99%

Application of a facile solid-state process to synthesize the CdO spherical nanoparticles

2013

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Mechanochemical process has attracted a worldwide interest in the synthesis of nanomaterials since reactions can be run in solid state without any organic solvent. Therefore, this method is an environmentally friendly reaction. Cadmium oxide is a category of the practical semiconductor metal oxides, which is widely applied in various scientific and industrial fields because of its catalytic, optical, and electrical properties. In this study, cadmium oxide spherical nanoparticles were successfully synthesized using a facile and effective solid-state process called mechanochemical reaction. This performance was carried out by employing cadmium acetate dihydrate and urea as reactants without any additives at room temperature and an adjusted rate of 30 Hz (1,800 rpm) for 130 min. Due to calcination of the resulting precursor at 500°C for 2 h in a furnace, the organic sections disappeared and only the CdO phase remained. The X-ray diffraction pattern confirmed the formation of the CdO phase with an excellent crystalline structure. Scanning electron microscopy and transmission electron microscopy images indicated that the morphology of the product is spherical nanoparticles with an average particle size of 46 nm and a standard deviation of 1.95. Particle size distribution was concluded using a statistical method and image processing program. Meanwhile, the solid-state diffuse reflectance spectrum of the resulting product was evaluated to study its optical property via measurement of the band gap energy value (E g ).

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Cation substitution in ZnO obtained by mechanical milling

Cited by 18 publications

References 11 publications

Dopants incorporation in ZnO mechanical milled powders sensed by positrons

Dopants incorporation in ZnO mechanical milled powders sensed by positrons

Synthesis, characterization and optical properties of Zn1−xTixO nanoparticles prepared via a high-energy ball milling technique

Application of a facile solid-state process to synthesize the CdO spherical nanoparticles

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