The effect of Fe, Cu, and Si impurities on the formation of emission spectra in bulk ZnO crystals

Мездрогина, М. М.; Danilevskii, E. Yu.; Kuzmin, Roman; Полетаев, Н. К.; Трапезникова, И. Н.; Чукичев, М. В.; Bordovskii, G. A.; Марченко, А. В.; Eremenko, M.

doi:10.1134/s1063782610040032

Cited by 12 publications

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“…In our system, the pure ZnO NPs show the PM behavior, but all of the other doping samples exhibit the clear RTFM, so it's sure that the RTFM is induced by doping of Zr. In the XRD patterns, all the intense peaks from Zn 1-x Zr x O (x = 0.005, 0.01, 0.015, 0.02) could be indexed the same hexagonal wurtzite structure as pure ZnO NPs, the increase in a and c parameter as a function of Zr concentration is consistent with the substitution of Zn 2+ ions (0.74 Å) by Zr 4+ ions (0.84 Å) [ 25 , 26 ]. The more Zn 2+ were substituted by Zr 4+ , the greater lattice distortion of ZnO would be generated, the more vacancies and/or interstitials should be got.…”

Section: Resultsmentioning

confidence: 91%

“…And the lattice parameter a and c increase monotonously with the content × increasing (shown in Figure 1(c) ) based on the results of Figure 1(a) . This reason may be that the ionic radius of Zr 4+ (0.84 Å) is larger than that of Zn 2+ (0.74 Å) [ 25 , 26 ], the more Zn 2+ were substituted by Zr 4+ , the greater lattice distortion of ZnO would be generated, the more lattice expansion would become. These results indicate that the Zr atoms have successfully entered into the ZnO lattices instead of forming other lattices.…”

Section: Resultsmentioning

confidence: 99%

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Synthesis and magnetic properties of Zr doped ZnO Nanoparticles

et al. 2011

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Zr doped ZnO nanoparticles are prepared by the sol-gel method with post-annealing. X-ray diffraction results show that all samples are the typical hexagonal wurtzite structure without any other new phase, as well as the Zr atoms have successfully entered into the ZnO lattices instead of forming other lattices. Magnetic measurements indicate that all the doping samples show room temperature ferromagnetism and the pure ZnO is paramagneism. The results of Raman and X-ray photoelectron spectroscopy indicate that there are a lot of oxygen vacancies in the samples by doping element of Zr. It is considered that the observed ferromagnetism is related to the doping induced oxygen vacancies.

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Section: Resultsmentioning

confidence: 91%

Section: Resultsmentioning

confidence: 99%

Synthesis and magnetic properties of Zr doped ZnO Nanoparticles

et al. 2011

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“…All samples exhibited typical hexagonal structures (JCPDS card no. 36–1451) 29 , and no phases attributable to PVA were observed. As can be seen in Fig.…”

Section: Resultsmentioning

confidence: 95%

Synthesis, photocatalytic and antidiabetic properties of ZnO/PVA nanoparticles

El-Dafrawy

Tarek

Samra

et al. 2021

Sci Rep

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A series of ZnO and ZnO/poly(vinyl alcohol) (PVA) catalysts were prepared using sol–gel method. An X-ray diffraction analysis confirmed the existence of the wurtzite ZnO phase, and scanning electron microscopy (SEM) observation revealed the formation of spherical ZnO and ZnO/PVA nanoparticles. The decomposition of methylene blue (MB) and methyl orange (MO) induced by the synthesized pure ZnO and ZnO/PVA nanoparticles was studied under ultraviolet–visible irradiation. Among the catalysts evaluated, ZnO/5PVA was the most active in the decomposition of MB, whereas ZnO/7PVA was the most active catalyst in the decomposition of MO. Moreover, an investigation of the biological activity of pure ZnO and ZnO/PVA indicated that ZnO/5PVA exhibited the best performance in lowering the glucose level in diabetic rats.

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“…2.1, 2.2. We found that all samples are typical hexagonal structure (JCPDS card No.36-1451)[28]. No phases for PVA were observed.…”

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confidence: 80%

Synthesis, photocatalytic and antidiabetic properties of ZnO/PVA nanoparticles

Dafrawy

Tarek

Samra

et al. 2021

Preprint

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We prepared a series of ZnO and ZnO/PVA catalysts by sol-gel method. The wurtzite ZnO phase was confirmed by X-ray diffraction analysis (XRD). Forming spherical shaped ZnO and ZnO/PVA nanoparticles was proved by Scanning electron microscope (SEM) images. Decomposition of Methylene Blue (MB) and methyl orange (MO) by synthesized pure ZnO and ZnO/PVA nanoparticles were studied in the UV–Vis region. ZnO/5PVA was the most active in decomposition of MB, while ZnO/7PVA was the most active in decomposition of MO. By studying biological activity of pure ZnO and ZnO/PVA in diabetic rats shows that ZnO/5PVA was the most active in lowering glucose level by different percentages.

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The effect of Fe, Cu, and Si impurities on the formation of emission spectra in bulk ZnO crystals

Cited by 12 publications

References 11 publications

Synthesis and magnetic properties of Zr doped ZnO Nanoparticles

Synthesis and magnetic properties of Zr doped ZnO Nanoparticles

Synthesis, photocatalytic and antidiabetic properties of ZnO/PVA nanoparticles

Synthesis, photocatalytic and antidiabetic properties of ZnO/PVA nanoparticles

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