Synthesis and Characterization of EuL3(phen) Luminescent Complex

2011 ◽  
Vol 239-242 ◽  
pp. 2488-2491
Author(s):  
Hui Juan Ren ◽  
De Hui Sun ◽  
Zhen Feng Cui ◽  
Guang Yan Hong
Keyword(s):  
Inductively Coupled Plasma ◽  
Atomic Emission ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
Crystalline Complex ◽  
X Ray ◽  
Inductively Coupled ◽  
Thermogravimetric Curve ◽  
Light Excitation

The europium(III)-benzoic acid(HL)-1,10-phenanthroline(phen) complex was synthesized in the ethanol-H2O system by a precipitation method. The morphology of the minicrystal complex with diameters of ca. 1.0 µm is characterized by scanning electron microscopy (SEM). Elemental analysis and inductively coupled plasma-atomic emission spectroscopy (ICP-AES) are used to determine the chemical composition of the complex. Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction analysis (XRD) are used to examine the structure of the complex. The results show that the complex is a new kind of crystalline complex and the composition of the complex is speculated to be EuL3(phen). The thermogravimetric curve (TGA) analysis indicates that the complex is stable below 232 °C in air. The photoluminescence analyses (PLA) exhibit that the complex emits the characteristic red fluorescence of Eu (III) ions at 613nm under ultraviolet light excitation.

scholarly journals Preparation and characterization of apatite-like compound

2018 ◽  
Vol 96 (8) ◽  
pp. 803-809
Author(s):  
Khaled Boughzala ◽  
Ali Bechrifa ◽  
Fethi Kooli ◽  
Nabil Fattah ◽  
Khaled Bouzouita
Keyword(s):  
Inductively Coupled Plasma ◽  
Atomic Emission ◽  
Apatite Formation ◽  
Secondary Phases ◽  
X Ray Diffraction ◽  
Apatite Phase ◽  
Formation Reaction ◽  
X Ray ◽  
Inductively Coupled

Barium–lanthanum britholite solid solutions, Ba10-xLax(PO4)6-x(SiO4)xF2, with 0 ≤ x ≤ 6 were prepared by solid state reaction in the temperature range of 1200–1400 °C. The powders were analyzed by inductively coupled plasma atomic emission spectroscopy (ICP-AES), F-selective electrode, X-ray diffraction (XRD), and Fourier transform infrared (FTIR). In addition, the present study used thermal analysis to follow the apatite formation reaction during the heat treatment. For x ≤ 3, there is formation of a single apatite phase, whereas above this value, the La2SiO5, La2Si2O7, BaSi2O5, and Ba2La2O5 secondary phases were observed. The variation of the lattice parameters of the apatite phase as a function of x confirmed that the solid solution is discontinuous to either side of x = 3.

Synthesis and Characterisation of Tb4L3(Phen)0.75•7H2O Nanorods

2011 ◽  
Vol 194-196 ◽  
pp. 878-881
Author(s):  
Hui Juan Ren ◽  
Zhen Feng Cui ◽  
De Hui Sun ◽  
Guang Yan Hong
Keyword(s):  
Inductively Coupled Plasma ◽  
Atomic Emission ◽  
Precipitation Method ◽  
Rare Earth Complex ◽  
X Ray Diffraction ◽  
Strong Absorption Band ◽  
Inductively Coupled ◽  
Transmission Electron ◽  
Thermogravimetric Curve ◽  
Co Precipitation

The rare earth complex terbium (III)-pyromellitic acid (H4L)-1,10-phenanthroline (phen) nanorod was synthesized in the polyvinylpyrrolidone (PVP) matrix by a co-precipitation method. The chemical composition of the as-synthesized sample was speculated to be PVP/Tb4L3(phen)0.75∙7H2O by elemental analysis, inductively coupled plasma-atomic emission spectroscopy (ICP-AES), and Fourier transform infrared spectroscopy (FTIR). The transmission electron microscopy (TEM) result exhibited that the as-synthesized sample was nanorods with diameters of ca. 150 nm. The X-ray diffraction pattern (XRD) of the sample showed that it was a crystalline complex. The thermogravimetric curve (TGA) analysis exhibited that the sample is stable below 450 °C. UV–Vis diffuse reflectance spectra exhibited that there is a broad and strong absorption band in the range of 280-350 nm. The photoluminescence analyses (PLA) indicated that the as-synthesized sample emitted the characteristic green fluorescence of Tb (III) ions under ultraviolet light excitation.

Synthesis and Characterization of PVP/Eu4/3L(phen)•2H2O Luminescent Complex

2011 ◽  
Vol 121-126 ◽  
pp. 1500-1503
Author(s):  
Hui Juan Ren ◽  
Hua Yang ◽  
De Hui Sun ◽  
Zhen Feng Cui ◽  
Guang Yan Hong
Keyword(s):  
Electron Microscopy ◽  
Inductively Coupled Plasma ◽  
Atomic Emission ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
Pyromellitic Acid ◽  
Inductively Coupled ◽  
Transmission Electron ◽  
Ft Ir

Rare earth europium (Eu(III))-pyromellitic acid (H4L)-1,10-phenanthroline (phen) ternary luminescent complex has been synthesized in polyvinylpyrrolidone (PVP) matrix by precipitation method. The chemical constitution of the complex has been demonstrated as PVP/EuL4/3L(phen)•2H2O by a combination of elemental analysis, inductively coupled plasma-atomic emission spectroscopy (ICP-AES) and Fourier-transform infrared spectroscopy (FT-IR). X-ray diffraction analysis (XRD) has shown that the complex is a new kind of crystal whose structure is totally different from two ligands. The morphology of the complex has been investigated by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results have shown that the complex has a rodlike crystal structure and the diameter of the rod is about 400 nm. Thermogravimetric analysis (TG) has indicated that the luminescent complex is thermally stable below 300 °C. Photoluminescence spectra (PL) have revealed that the complex can emit Eu3+ characteristic red fluorescence under ultraviolet excitation.

The Characteristic Evaluation of Hydroxyapatite Powders Synthesized from CaCO3 Refined from Oyster Shell and H3PO4

2006 ◽  
Vol 118 ◽  
pp. 639-644
Author(s):  
Hye Sung Kim ◽  
Su Chak Ryu
Keyword(s):  
Bone Density ◽  
Inductively Coupled Plasma ◽  
Oyster Shell ◽  
Atomic Emission ◽  
Xrd Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
Inductively Coupled ◽  
Infra Red ◽  
Ft Ir

Hydroxyapatite (Ca10(PO4)6(OH)2, HAp) powders is synthesized using the mixed powders of CaCO3 refined from oyster shells and phosphoric acid (H3PO4-98%, Daejung) as starting materials. The characteristic evaluation and chemical analysis of the synthesized powders is performed by X-ray diffraction (XRD), Fourier-transformed infra-red spectroscopy (FT-IR), and inductively-coupled plasma atomic emission spectroscopy (ICPAES). XRD analysis of synthetic powder by heat treatment at 1300°C for 2hrs shows only HAp peaks corresponding to stoichiometric HAp. It is confirmed by ICP-AES test that impurities such as Zn, In, Ti, Ba, Cd, Pb, and Mn, is not detected at all, but small amounts of Ti and Be is observed (0.099ppm Ti and 0.002ppm Ba). Variation of bone density is measured by giving medication of HAp powder with drinking water into human body continuously for three month. After the medication, the bone density is higher than the medication before. This means that HAp powder made from this process can be used as improver of bone density.

scholarly journals Crystal Chemistry and Luminescence Properties of Eu-Doped Polycrystalline Hydroxyapatite Synthesized by Chemical Precipitation at Room Temperature

Crystals ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 250 ◽  
Author(s):  
Francesco Baldassarre ◽  
Angela Altomare ◽  
Nicola Corriero ◽  
Ernesto Mesto ◽  
Maria Lacalamita ◽  
...  
Keyword(s):  
Fourier Transform ◽  
High Temperature ◽  
Inductively Coupled Plasma ◽  
Room Temperature ◽  
Annealing Temperature ◽  
Chemical Precipitation ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
X Ray ◽  
Inductively Coupled

Europium-doped hydroxyapatite Ca10(PO4)6(OH)2 (3% mol) powders were synthesized by an optimized chemical precipitation method at 25 °C, followed by drying at 120 °C and calcination at 450 °C and 900 °C. The obtained nanosized crystallite samples were investigated by means of a combination of inductively coupled plasma (ICP) spectroscopy, powder X-ray diffraction (PXRD), Fourier Transform Infrared (FTIR), Raman and photoluminescence (PL) spectroscopies. The Rietveld refinement in the hexagonal P63/m space group showed europium ordered at the Ca2 site at high temperature (900 °C), and at the Ca1 site for lower temperatures (120 °C and 450 °C). FTIR and Raman spectra showed slight band shifts and minor modifications of the (PO4) bands with increasing annealing temperature. PL spectra and decay curves revealed significant luminescence emission for the phase obtained at 900 °C and highlighted the migration of Eu from the Ca1 to Ca2 site as a result of increasing calcinating temperature.

Effect of [Li]/[Nb] ratio on composition and defect structure of Zr:Yb:Tm:LiNbO3 crystals

2018 ◽  
Vol 32 (10) ◽  
pp. 1850119
Author(s):  
Chunrui Liu ◽  
Li Dai ◽  
Luping Wang ◽  
Yu Shao ◽  
Zhehua Yan ◽  
...  
Keyword(s):  
Defect Structure ◽  
Inductively Coupled Plasma ◽  
Atomic Emission ◽  
Distribution Coefficients ◽  
Czochralski Technique ◽  
X Ray Diffraction ◽  
Plasma Atomic Emission ◽  
X Ray ◽  
Inductively Coupled ◽  
Ir Transmission

Zr:Yb:Tm:LiNbO3 crystals with various [Li]/[Nb] ratios (0.946, 1.05, 1.20 and 1.38) were grown by the Czochralski technique. Distribution coefficients of Zr[Formula: see text], Yb[Formula: see text] and Tm[Formula: see text] ions were analyzed by the inductively coupled plasma-atomic emission spectrometer (ICP-AES). The influence of [Li]/[Nb] ratio on the composition and defect structure of Zr:Yb:Tm:LiNbO3 crystals was investigated by X-ray diffraction and IR transmission spectrum. The results show that as the [Li]/[Nb] ratio increases in the melt, the distribution coefficients of Yb[Formula: see text] and Tm[Formula: see text] ions both increase while that of Zr[Formula: see text] ion deceases. When the [Li]/[Nb] ratio increases to 1.20 in the melt, Zr:Yb:Tm:LiNbO3 crystal is nearly stoichiometric. In addition, when the [Li]/[Nb] ratio reaches up to 1.38, Nb[Formula: see text] are completely replaced and Li[Formula: see text] starts to impel the Zr[Formula: see text], Yb[Formula: see text] and Tm[Formula: see text] into the normal Li sites.

Enhanced Bioactivity of Chemically Oxidization-Modified Titanium Alloys

2018 ◽  
Vol 281 ◽  
pp. 564-569
Author(s):  
Ya Ming Wang ◽  
Yong Fa Song ◽  
Shun Lan Deng ◽  
Osaka Akiyoshi ◽  
Guang Xin Wang ◽  
...  
Keyword(s):  
Inductively Coupled Plasma ◽  
Negative Ions ◽  
Atomic Emission ◽  
Chemical Oxidation ◽  
Ion Concentration ◽  
Mixed Solution ◽  
X Ray Diffraction ◽  
X Ray ◽  
Inductively Coupled ◽  
Mechanism Operative

Anatase-type titanium dioxide oxide layer was formed on the surface of titanium alloy by chemical oxidation. 0.9 um thick anatase was obtained by soaking in a mixed solution of a certain proportion of hydrogen peroxide and hydrochloric acid and then heat treatment. The surface morphology, phase structures and composition of oxide layers were characterized by scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD). Thickness of titania coating was measured by the ball pit gauge. Inductively coupled plasma atomic emission spectroscopy (ICP-AES) was used to detect the change of Ca ion and P ion concentration in solution. The results showed that anatase layers deposited apatite within 4 days accompanying the decrease of pH when soaked in simulated human body fluid (SBF). Ion exchange between the negative ions and calcium ions in SBF is proposed as the mechanism operative to favor the deposition on apatite.

Characterization of BOF Dust for Pellets Production Used in Blast Furnace

2014 ◽  
Vol 798-799 ◽  
pp. 611-616 ◽  
Author(s):  
Elisa Pinto da Rocha ◽  
J.A. de Castro ◽  
G.M. Araujo ◽  
L. Martins
Keyword(s):  
Blast Furnace ◽  
Inductively Coupled Plasma ◽  
Atomic Emission ◽  
Basic Oxygen Furnace ◽  
Blast Furnace Process ◽  
X Ray Diffraction ◽  
Basic Oxygen ◽  
Furnace Process ◽  
Inductively Coupled

In order to minimize the incorrect disposal of dust generated in the basic oxygen furnace (BOF) converter and to generate a new application for this solid residue, a simple characterization route was proposed. The powder residue is used to produce self-reducing pellets and can be used in the blast furnace process. The chemical analysis of the dust was carried out using Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES), and some elements as Fe, Si, P, Al and Ca were detected in high amount, as the iron which achieved about 65% concentration. Moreover, the X-ray diffraction analysis indicated that the iron was found in the phases, mainly, as magnetite (Fe3O4) and hematite (Fe2O3) while quartz (SiO2) and calcite (CaCO3) were the major impurities. The spectrometry dispersive energy (SDE) analysis confirmed the presence of such elements and the images obtained by SEM allowed visualizing the morphology of the particles. The average of particle size distribution of the dust was 0.053 mm which is suitable for self-agglomerates pellets.

IN VITRO OSTEO-INDUCTIVE CHARACTERIZATION OF NANO-GRADE PEARL POWDERS

2011 ◽  
Vol 23 (02) ◽  
pp. 135-140
Author(s):  
Mei-Ju Hou ◽  
Chi-Jen Shih
Keyword(s):  
Inductively Coupled Plasma ◽  
Body Fluid ◽  
X Ray Diffraction ◽  
X Ray ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Hydroxyl Apatite ◽  
Inductive Behavior

The main objective of this study is to characterize the in vitro osteo inductive behavior of pearl nano crystallites. The results obtained from X-ray diffraction, Fourier transform infrared (FTIR) spectra, and inductively coupled plasma mass (ICP-MS) analysis demonstrate that the pearls can induce the formation of a hydroxyl apatite (HA) layer on their surface in simulated body fluid (SBF), even after only short soaking periods. Further, MC3T3-E1 cells can easily attach and spread on the pearl powders after 1 h of cultivation.

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