Synthesis and phosphorescence properties of Mn4+, La3+ and Ho3+ in MgAl2Si2O8

Kalaycıoğlu, Nilgün Özpozan; Çırçır, Esra

doi:10.1016/j.jallcom.2011.08.035

Cited by 16 publications

(14 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…phosphor at 722 nm, we took into account the emission spectrum of the undoped MgAl 2 Si 2 O 8 sample under the same excitation conditions. We reported the spectrum of the undoped MgAl 2 Si 2 O 8 in our previous article [17]. It showed an emission ranging from 600 to 800 nm with the three maximum at 617, 710, and 720 nm.…”

Section: Resultsmentioning

confidence: 92%

Novel red-emitting phosphors, (Mg(1−x−y)MnxDyy)Al2Si2O8 and (Mg(1−x−y)MnxTmy)Al2Si2O8

Öztürk

Özpozan

Dayan

2014

J Therm Anal Calorim

View full text Add to dashboard Cite

Your article is protected by copyright and all rights are held exclusively by Akadémiai Kiadó, Budapest, Hungary. This e-offprint is for personal use only and shall not be selfarchived in electronic repositories. If you wish to self-archive your article, please use the accepted manuscript version for posting on your own website. You may further deposit the accepted manuscript version in any repository, provided it is only made publicly available 12 months after official publication or later and provided acknowledgement is given to the original source of publication and a link is inserted to the published article on Springer's website. The link must be accompanied by the following text: "The final publication is available at link.springer.com".Abstract Mn 4? doped and Dy 3? , Tm 3? co-doped MgAl 2 Si 2 O 8 -based phosphors were prepared by conventional solid state reaction at 1,300°C. They were characterized by thermogravimetry, differential thermal analysis, X-ray powder diffraction, photoluminescence, and scanning electron microscopy. The luminescence mechanism of the phosphors, which showed broad red emission bands in the range of 600-715 nm and had a different maximum intensity when activated by UV illumination, was discussed. Such a red emission can be attributed to the 2 E ? 4 A 2 transitions of Mn 4? .

show abstract

Section: Resultsmentioning

confidence: 92%

Novel red-emitting phosphors, (Mg(1−x−y)MnxDyy)Al2Si2O8 and (Mg(1−x−y)MnxTmy)Al2Si2O8

Öztürk

Özpozan

Dayan

2014

J Therm Anal Calorim

View full text Add to dashboard Cite

show abstract

“…were prepared in accordance with the published procedure. [10][11][12][13] All the prepared materials were characterized by XRD analysis, FT-IR, TG/DTA, SEM, EDX and nitrogen adsorption-desorption (BET) analysis. Moreover, the materials were used as catalysts in the reduction of nitroanilines.…”

Section: Resultsmentioning

confidence: 99%

“…Lastly, the materials were sintered at 1300 • Cfor3h. [10][11][12][13] After these steps, the substances were obtained and all the compounds were examined with XRD analysis using a Bruker AXS D8 Advance diffractometer which was run at 20-60 kV and 6-80 mA, 2θ = 10-90 • and a step of 0.002 • usingCuK α X-ray. The SEM images and EDX analysis were performed on a LEO 440 model scanning electron microscope using an accelerating voltage of 20 kV.…”

Section: Preparation and Characterization Of Materialsmentioning

confidence: 99%

“…The results show that the materials were successfully prepared and are in concordance with the literature. [10][11][12][13] The diffraction patterns of the…”

Section: Xrd Analysismentioning

confidence: 99%

“…Aluminosilicates materials can be used for the simple impregnation process, whereby combined materials can be synthesized and used as a long lasting catalyst. [10][11][12][13][14][15][16][17] Furthermore, materials including nickel, copper, platinum, palladium and ruthenium have also been used as catalysts for the transfer of hydrogenation of ketones, hydrogenation of aldehyde, hydrosilylation of alkynes, methanol decomposition, Suzuki-Miyaura cross-coupling reaction, solvent-free oxidation of aromatic alcohols, etc. [18][19][20][21][22][23] Nitroarenes are a widely organic pollutant in waste water.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Fabrication of MgAl2Si2O8 : M0.01 (M = Ni2+, Cu2+, Pd2+, Pt2+ and Ru3+): catalytic effects for the reduction of 2- or 4-nitroanilines in water

et al. 2015

View full text Add to dashboard Cite

Five new MgAl 2 Si 2 O 8 :M 0.01 (M = Ni 2+ ,Cu 2+ ,Pd 2+ ,Pt 2+ and Ru 3+) materials were developed for the reduction of nitroarenes as catalysts by conventional solid state reaction at 1300 • C. The prepared materials were characterized by thermal analysis, Fourier transform infrared spectroscopy, X-ray powder diffraction analysis, scanning electron microscopy, energy-dispersive X-ray analysis and nitrogen adsorption-desorption analysis. The catalytic activities of the prepared catalysts were tested in the reduction of 2-or 4-nitroanilines in aqueous media at ambient temperature in the presence of NaBH 4 by UV-vis spectrophotometer. Furthermore, the MgAl 2 Si 2 O 8 :M 0.01 catalysts can be recovered by filtration and reused for five cycles for the reduction of 2-nitroaniline. These results show that the MgAl 2 Si 2 O 8 :M 0.01 catalysts can be used in practical applications in the reduction of nitroanilines.

show abstract

Thermoluminescence properties of La³⁺, Gd³⁺,Dy³⁺ and Ho³⁺ co‐doped MgAl₂Si₂O₈:Mn⁴⁺

2018

View full text Add to dashboard Cite

Thermoluminescence properties of Mn4+‐doped and La3+, Gd3+, Dy3+ and Ho3+ co‐doped MgAl2Si2O8 host phosphors were investigated in detailed and reported for the first time. The phosphors were exposed to β‐ and α‐irradiation and the glow curves appeared at 260–262 ± 2°C and 245–252 ± 2°C, respectively. Thermoluminescence analysis show that the main glow peaks actually consisted of three distinct peaks (P1, P2 and P3). In addition, all the phosphors had a main peak, and many satellite peaks also appeared up to 200°C. Moreover, it was observed that La3+, Gd3+, Dy3+ and Ho3+ dopants in MgAl2Si2O8Mn4+ phosphor can change the thermoluminescence peak intensities, but they did not cause any new glow peak. In addition, when α‐irradiation was used, the glow peaks were shift to a lower temperature region. Kinetic parameters of P1, P2 and P3 were calculated, and it was found that P1 and P3 had first‐order kinetics and P2 had general‐order kinetic parameters. In addition, it was found that when the easy and convenient annealing procedure was applied to the phosphorus, the thermoluminescence signal was measured as stable over many repetitions. The dose sensitivity, reproducibility and fading features of the powdered phosphors were investigated and computerized glow curve deconvolution analysis was also performed. Results showed that thermoluminescence properties of these materials were good but the fading reliabilities were poor and therefore the sintered or single crystal forms should be preferred for their better fading properties.

show abstract

Synthesis and phosphorescence properties of Mn4+, La3+ and Ho3+ in MgAl2Si2O8

Cited by 16 publications

References 12 publications

Novel red-emitting phosphors, (Mg(1−x−y)MnxDyy)Al2Si2O8 and (Mg(1−x−y)MnxTmy)Al2Si2O8

Novel red-emitting phosphors, (Mg(1−x−y)MnxDyy)Al2Si2O8 and (Mg(1−x−y)MnxTmy)Al2Si2O8

Fabrication of MgAl2Si2O8 : M0.01 (M = Ni2+, Cu2+, Pd2+, Pt2+ and Ru3+): catalytic effects for the reduction of 2- or 4-nitroanilines in water

Thermoluminescence properties of La³⁺, Gd³⁺,Dy³⁺ and Ho³⁺ co‐doped MgAl₂Si₂O₈:Mn⁴⁺

Contact Info

Product

Resources

About

Synthesis and phosphorescence properties of Mn4+, La3+ and Ho3+ in MgAl2Si2O8

Cited by 16 publications

References 12 publications

Novel red-emitting phosphors, (Mg(1−x−y)MnxDyy)Al2Si2O8 and (Mg(1−x−y)MnxTmy)Al2Si2O8

Novel red-emitting phosphors, (Mg(1−x−y)MnxDyy)Al2Si2O8 and (Mg(1−x−y)MnxTmy)Al2Si2O8

Fabrication of MgAl2Si2O8 : M0.01 (M = Ni2+, Cu2+, Pd2+, Pt2+ and Ru3+): catalytic effects for the reduction of 2- or 4-nitroanilines in water

Thermoluminescence properties of La3+, Gd3+,Dy3+ and Ho3+ co‐doped MgAl2Si2O8:Mn4+

Contact Info

Product

Resources

About

Thermoluminescence properties of La³⁺, Gd³⁺,Dy³⁺ and Ho³⁺ co‐doped MgAl₂Si₂O₈:Mn⁴⁺