Synthesis, Crystal Structure, and Optical Properties of a New Sodium‐Cadmium Carbonate Na4Cd3(CO3)4(OH)2

Chen, Jie; Luo, Min; Ye, Ning

doi:10.1002/zaac.201400377

Cited by 4 publications

(1 citation statement)

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“…24 The wide and scattered peaks from 3500 to 3000 cm -1 can be attributed to O−H stretching vibrations (O−H) of coordinated water molecules which are intensely affected by hydrogen bonding. 25 The lattice vibration observed around 415 cm -1 can be assigned to the Eu−O stretching vibration, 26 whereas the vibration of Eu−O is very weak and cannot be observed. The main IR absorption region between about 1350 and 1500 cm -1 reveals two absorption bands (1365 and 1520 cm -1 ) owing to C−O stretching vibrations of (CO 3 ) 2-groups.…”

Section: Crystal Structurementioning

confidence: 99%

SYNTHESIS, CRYSTAL STRUCTURE AND PHOTOLUMINESCENCE PROPERTIES OF A NEW RARE-EARTH CARBONATE Na3Eu(CO3)(3)6H2O

Zhao

Huang

et al. 2017

J. Chil. Chem. Soc.

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A new sodium europium carbonate hydrate, Na 3 Eu(CO 3 ) 3 ·6H 2 O, has been prepared using the hydrothermal method, and its structure was determined by single crystal X-Ray diffraction analysis for the first time. It crystallizes in the polar hexagonal space group P6 3 with a = 11.382(9) Å, c = 5.989(5) Å, V = 672.06(9) Å 3 , Z = 2, Mr = 509.06, Dc = 2.516 g/cm 3 , F(000) = 492, μ(MoKα) = 4.84 mm -1 , R 1 = 0.015 and wR = 0.038. The structure features a three-dimensional（3D） framework composed of planar (CO 3 ) 2-triangles, Eu 3+ ions and Na + ions, which delimits 1D infinite chains with a hexangular star appearance along the c-axis. The IR spectrum and the self-activated photoluminescence properties were studied. Under the excitation of near UV light (395nm), it shows strong red emission at 618 nm with a lifetime of 348.7 μs. Present research indicates that Na 3 Eu(CO 3 ) 3 ·6H 2 O is a promising red phosphor for white light-emitting diodes.Keywords: hydrothermal; carbonate; X-ray diffraction; photoluminescence e-mail: iamzd1996@yahoo.com.cn; fanyunchang@hpu.edu.cn INTRODUCTIONIn the last few decades, an extensive research has been carried out for new rare earth luminescent materials, owning to their potential applications in optical information transmission, display imaging, solar photovoltaic conversion, fluorescent powder, electrical conduction, new light source and X-ray intensifying screen. 1-3 Eu 3+ ion doped material is an effective red phosphor due to its intense near UV absorption and excellent pure red emissions corresponding to the 5 D 0 → 7 F j (j = 1, 2, 3, 4) transitions of Eu 3+ . [4][5][6][7][8] In recent years, a large amount of rare earth carbonates system has been parepared, such as Na 3 Eu(CO 3 ) 3 , 9 NaLiRe(CO 3 ) 3 (Re = Eu-Er,Yb,Lu,Y), 10 Na 3 Eu(CO 3 )F 3 , 11 BaEu(CO 3 ) 2 , 12 Ba 3 Eu(CO 3 ) 2 F 3 , 13 Na 3 La(CO 3 ) 4 F: Eu 3+12 and KGd(CO 3 )F 2 : Eu 3+ . 14 However, there were few reports on their luminescence properties. 15 In order to explore a new europium carbonate that might afford red luminescent emission, we started a research using the hydrothermal method and a new alkali sodium europium carbonate hydrate Na 3 Eu(CO 3 ) 3 ·6H 2 O was successfully prepared. The crystal structure, IR spectrum and photoluminescence properties at room temperature were studied for it. EXPERIMENTAL Materials and MethodsAll of the chemicals, NaCO 3 , NaHCO 3 , Eu(NO 3 ) 3 ·6H 2 O were purchased from Shanghai Reagent Factory and were analytically pure without further purification. IR spectra were recorded on a Magna 750 FT-IR spectrometer as KBr pellets in the range of 4000−400 cm -1 . Photoluminescence (PL) properties were performed on EDINBURGHFLS980 fluorescence spectrophotometer. 2 SynthesisSingle crystal was prepared by the follow procedure: a mixture of Na 2 CO 3 (0.44 g, 4 μmol), NaHCO 3 (0.2 g, 2 μmol) and Eu(NO 3 ) 3 ·6H 2 O (0.035 g, 0.1 μmol) was dissolved in 2 ml deionized water, which was then placed in a 20 ml Teflon-lined stainless steel autoclave. The autoclave was sealed an...

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Section: Crystal Structurementioning

confidence: 99%

SYNTHESIS, CRYSTAL STRUCTURE AND PHOTOLUMINESCENCE PROPERTIES OF A NEW RARE-EARTH CARBONATE Na3Eu(CO3)(3)6H2O

Zhao

Huang

et al. 2017

J. Chil. Chem. Soc.

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ChemInform Abstract: Synthesis, Crystal Structure, and Optical Properties of a New Sodium‐Cadmium Carbonate Na₄Cd₃(CO₃)₄(OH)₂.

Chen

Luo

2015

ChemInform

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Colorless block-shaped crystals of the title compound are hydrothermally synthesized from mixtures of CdCl 2, Na2CO3, and H2O (autoclave, 220 C, 5 d, 80% yield). Na4Cd3(CO3)4(OH)2 is characterized by single crystal XRD, UV/VIS diffuse reflectance spectroscopy, and DFT calculations. It crystallizes in the monoclinic space group P2 1/c with Z = 2. The structure is formed from [Cd 3(CO3)4(OH)2] layers, which are separated by Na atoms in two different crystallographic sites. The title compound exhibits an optical bandgap of about 5.40 eV with an UV cut-off edge of 230 nm. -(CHEN, J.; LUO*, M.; YE, N.; Z. Anorg. Allg. Chem. 641 (2015) 2, 460-463, http://dx.

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Formation and crystal structure of a new double carbonate phase between Na and Cd

Kim

Kwak

et al. 2018

Journal of Solid State Chemistry

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Synthesis, Crystal Structure, and Optical Properties of a New Sodium‐Cadmium Carbonate Na₄Cd₃(CO₃)₄(OH)₂

Cited by 4 publications

References 31 publications

SYNTHESIS, CRYSTAL STRUCTURE AND PHOTOLUMINESCENCE PROPERTIES OF A NEW RARE-EARTH CARBONATE Na3Eu(CO3)(3)6H2O

SYNTHESIS, CRYSTAL STRUCTURE AND PHOTOLUMINESCENCE PROPERTIES OF A NEW RARE-EARTH CARBONATE Na3Eu(CO3)(3)6H2O

ChemInform Abstract: Synthesis, Crystal Structure, and Optical Properties of a New Sodium‐Cadmium Carbonate Na₄Cd₃(CO₃)₄(OH)₂.

Formation and crystal structure of a new double carbonate phase between Na and Cd

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Synthesis, Crystal Structure, and Optical Properties of a New Sodium‐Cadmium Carbonate Na4Cd3(CO3)4(OH)2

Cited by 4 publications

References 31 publications

SYNTHESIS, CRYSTAL STRUCTURE AND PHOTOLUMINESCENCE PROPERTIES OF A NEW RARE-EARTH CARBONATE Na3Eu(CO3)(3)6H2O

SYNTHESIS, CRYSTAL STRUCTURE AND PHOTOLUMINESCENCE PROPERTIES OF A NEW RARE-EARTH CARBONATE Na3Eu(CO3)(3)6H2O

ChemInform Abstract: Synthesis, Crystal Structure, and Optical Properties of a New Sodium‐Cadmium Carbonate Na4Cd3(CO3)4(OH)2.

Formation and crystal structure of a new double carbonate phase between Na and Cd

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Synthesis, Crystal Structure, and Optical Properties of a New Sodium‐Cadmium Carbonate Na₄Cd₃(CO₃)₄(OH)₂

ChemInform Abstract: Synthesis, Crystal Structure, and Optical Properties of a New Sodium‐Cadmium Carbonate Na₄Cd₃(CO₃)₄(OH)₂.