One-pot efficient synthesis of methyl carbamate by M5Ca5(PO4)6F2 (M = Co, Ni, Cu, Zn) catalysts
Sign Up to like & getrecommendations! Published in 2019 at "Catalysis Communications"
DOI: 10.1016/j.catcom.2019.04.023
Abstract: Abstract A facile and efficient one-pot synthesis of methyl carbamate (MC) by urea and methanol was studied using metal modified fluorapatite as a catalyst. M5Ca5(PO4)6F2 (M5FAP, M = Co, Ni, Cu, Zn) was synthesized by co-precipitation. Among… read more here.
Keywords: synthesis methyl; methyl carbamate; synthesis; m5ca5 po4 ... See more keywords
Luminescence property, energy transfer and thermal stability of Sr6Ca4(PO4)6F2:Ce3+, Tb3+, Sm3+ for white light emitting diodes
Sign Up to like & getrecommendations! Published in 2020 at "Optik"
DOI: 10.1016/j.ijleo.2019.163424
Abstract: Abstract Series of Sr6Ca4(PO4)6F2:Ce3+, Tb3+, Sm3+ are prepared by a high temperature solid state method. Ce3+, Tb3+ or Sm3+ single-doped Sr6Ca4(PO4)6F2 can produce blue, green and red emission under ultraviolet excitation, respectively. However, the emission… read more here.
Keywords: ce3; sr6ca4 po4; tb3 sm3; ce3 tb3 ... See more keywords
Significant enhancement of blue photoluminescence intensity of Dy3+ modified Sr6Ca4(PO4)6F2:Eu2+ phosphors
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Rare Earths"
DOI: 10.1016/j.jre.2020.06.004
Abstract: Abstract Blue-emitting phosphors Sr6Ca4(PO4)6F2:Eu2+ (SCPF:Eu2+), Sr6Ca4(PO4)6F2:Eu2+,Dy3+ (SCPF:Eu2+,Dy3+) and Sr6Ca4(PO4)6F2:Eu2+,Dy3+,Si4+ (SCPF:Eu2+,Dy3+,Si4+) with apatite structure were successfully synthesized by traditional solid-state reaction under reducing atmosphere. Eu2+, Dy3+ and Si4+ ions occupy the corresponding sites of Sr2+, Ca2+… read more here.
Keywords: 6f2 eu2; dy3; sr6ca4 po4; eu2 dy3 ... See more keywords
Achieving high energy transfer efficiency in Sr6Ca4(PO4)6F2:Ce3+, Mn2+ by regulating the occupation of activator
Sign Up to like & getrecommendations! Published in 2019 at "Materials Research Bulletin"
DOI: 10.1016/j.materresbull.2019.03.014
Abstract: Abstract Series of color tunable Sr6Ca4(PO4)6F2:Ce3+, Mn2+ were achieved. In the way of energy transfer, the activator Mn2+ should get large energy from sensitizer Ce3+ and show high efficiency. However, with increasing Mn2+ concentration the… read more here.
Keywords: ce3; sr6ca4 po4; mn2; po4 6f2 ... See more keywords
Effects of crystalline growth on structural and luminescence properties of Ca(10−3x)Eu2x(PO4)6F2 nanoparticles fabricated by using a microwave driven hydrothermal process
Sign Up to like & getrecommendations! Published in 2017 at "CrystEngComm"
DOI: 10.1039/c7ce01454f
Abstract: Eu3+ doped fluorapatite nanopowders were synthesized by a microwave assisted hydrothermal technique and annealed in the 500–1000 °C temperature range for 3 h. The europium ion concentration was determined to be in the 0.5–10 mol%… read more here.
Keywords: properties eu2x; effects crystalline; eu2x po4; crystalline growth ... See more keywords
Structure and photoluminescence properties of novel Sr6Ca4(PO4)6F2:Re (Re = Eu2+, Mn2+) phosphors with energy transfer for white-emitting LEDs
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DOI: 10.1039/c7ra06817d
Abstract: A series of Sr6Ca4(PO4)6F2:Eu2+,Mn2+ phosphors were synthesized through traditional solid state reaction. The structural and spectroscopic properties of the series samples along with the energy transfer from Eu2+ to Mn2+ ions have been investigated in… read more here.
Keywords: energy transfer; mn2; sr6ca4 po4; eu2 mn2 ... See more keywords
The structures and luminescence properties of Sr4Gd3Na3(PO4)6F2:Ce3+,Tb3+ green phosphors with zero-thermal quenching of Tb3+ for WLEDs.
Sign Up to like & getrecommendations! Published in 2019 at "Dalton transactions"
DOI: 10.1039/c9dt04320a
Abstract: In this paper, novel green-emitting Sr4Gd3Na3(PO4)6F2:Ce3+,Tb3+ phosphors with zero-thermal quenching of Tb3+ have been prepared and investigated. X-ray diffraction together with Rietveld structure refinement was employed to give an insight into the structures of the… read more here.
Keywords: ce3; 6f2 ce3; sr4gd3na3 po4; tb3 ... See more keywords
Optimization of external (in air) particle induced gamma-ray emission (PIGE) methodology for rapid, non-destructive, and simultaneous quantification of fluorine, sodium, and phosphorus in nuclear waste immobilization matrices
Sign Up to like & getrecommendations! Published in 2022 at "RSC Advances"
DOI: 10.1039/d2ra06163e
Abstract: External (in air) PIGE methodology has been optimized for rapid quantification of fluorine, sodium, and phosphorus in fluorapatite waste immobilization matrices for Molten Salt Reactor (MSR). The present methodology addresses the issue of distinguishing hydroxyapatite… read more here.
Keywords: methodology; air; ray; fluorine ... See more keywords