Fabrication, Structural, and Spectroscopic Investigation of Tb-Doped Lu3Al5O12 Phosphor

2005 ◽  
Vol 20 (11) ◽  
pp. 2934-2939 ◽  
Author(s):  
Yikun Liao ◽  
Danyu Jiang ◽  
Tao Feng ◽  
Jianlin Shi
Keyword(s):  
Particle Size ◽  
Crystallization Temperature ◽  
High Performance ◽  
Growth Process ◽  
Solution Combustion Synthesis ◽  
Processing Parameters ◽  
Solution Combustion ◽  
Urea Content ◽  
Emission Intensity Ratio ◽  
Combustion Synthesis Technique

A simple solution combustion synthesis technique was explored to produce Tb3+-doped Lu3Al5O12 (LuAG:Tb) phosphor with particle size in the range from about 25 to 900 nm by using glycine, urea, and the mixture of them as fuels. The effects of processing parameters such as type of fuel, fuel-to-oxidizer ratio and the composition of the complex fuel were studied. An increase in phosphor brightness and a decrease in crystallization temperature with increasing urea content in the fuel were observed. The integrated emission intensity ratio of the 5D3–7Fj transition to the 5D4–7Fj transition as a function of Tb concentration in LuAG was also investigated. It is very interesting that the growth process of the particles exhibited two steps when the content of urea in the complex fuel increased from 0 to 1.0. By tailoring the glycine-to-urea ratio in the fuel, an excellent fuel was found and high performance phosphors were obtained.

scholarly journals High-Performance Na0.44MnO2 Slabs for Sodium-Ion Batteries Obtained through Urea-Based Solution Combustion Synthesis

Batteries ◽  
2018 ◽  
Vol 4 (1) ◽  
pp. 8 ◽  
Author(s):  
Chiara Ferrara ◽  
Cristina Tealdi ◽  
Valentina Dall’Asta ◽  
Daniel Buchholz ◽  
Luciana Chagas ◽  
...  
Keyword(s):  
Combustion Synthesis ◽  
High Performance ◽  
Solution Combustion Synthesis ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Solution Combustion

scholarly journals Synthesis and Photoluminescence Study of Bi3+and Pb2+Activated Ca3(BO3)2

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
A. B. Gawande ◽  
R. P. Sonekar ◽  
S. K. Omanwar
Keyword(s):  
Stokes Shift ◽  
Solution Combustion Synthesis ◽  
Optimum Concentration ◽  
Prepared Phosphor ◽  
Luminescent Materials ◽  
Photoluminescence Properties ◽  
Solution Combustion ◽  
Sem Images ◽  
Synthesized Materials ◽  
Combustion Synthesis Technique

The photoluminescence properties of Pb2+and Bi3+doped Ca3(BO3)2prepared by solution combustion synthesis technique are discussed. The structure of the prepared phosphor is characterized and conformed by XRD and FTIR. SEM images of the prepared materials show irregular grains with agglomerate phenomena. Prepared phosphors achieved the band emissions, respectively, at 365 nm and 335 nm corresponding to the transitionP1→S013. Optimum concentration, critical transfer distance, and Stokes shift of the synthesized materials were measured. These phosphors may provide an efficient kind of luminescent materials for various applications in medical and industry.

Low-temperature solution combustion synthesis of high performance LiNi0.5Mn1.5O4

2014 ◽  
Vol 40 (5) ◽  
pp. 6447-6452 ◽  
Author(s):  
Guiyang Liu ◽  
Xin Kong ◽  
Quanbiao Wang ◽  
Hongyan Sun ◽  
Baosen Wang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Combustion Synthesis ◽  
High Performance ◽  
Solution Combustion Synthesis ◽  
Solution Combustion ◽  
Temperature Solution

Ethanol electrooxidation on high-performance mesoporous ZnFe2O4-supported palladium nanoparticles

2019 ◽  
Vol 43 (9) ◽  
pp. 3884-3890 ◽  
Author(s):  
Fariba Kaedi ◽  
Zahra Yavari ◽  
Milad Asmaei ◽  
Ahmad Reza Abbasian ◽  
Meissam Noroozifar
Keyword(s):  
Combustion Synthesis ◽  
Palladium Nanoparticles ◽  
High Performance ◽  
Solution Combustion Synthesis ◽  
Environmentally Friendly ◽  
Pd Nanoparticles ◽  
Ethanol Electrooxidation ◽  
Solution Combustion ◽  
Supported Palladium ◽  
Environmentally Friendly Method

As a catalyst for the electrooxidation of ethanol, a well-dispersed mesoporous ZnFe2O4 powder (ZnFe2O4MP) as a support for Pd nanoparticles (PdNPs) was fabricated using solution combustion synthesis, which is an easy and environmentally friendly method.

scholarly journals Solution combustion synthesis and sintering behavior of porous MgAl2O4 powders

2010 ◽  
Vol 42 (2) ◽  
pp. 133-141 ◽  
Author(s):  
J.H. Bai ◽  
J.C. Liu
Keyword(s):  
Particle Size ◽  
Specific Surface ◽  
Solution Combustion Synthesis ◽  
Molar Ratio ◽  
Sintering Behavior ◽  
Solution Combustion ◽  
Structure Characteristics ◽  
Surface Areas ◽  
Combustion Route ◽  
Specific Surface Areas

Porous MgAl2O4 powders were synthesized with a solution combustion route using a mixture of glycine and urea with the glycine/urea molar ratio of 2/9 as fuel. For the comparison purpose, denser powders were also combustion synthesized using urea as fuel. The porous/denser structure, characteristics (e.g. crystallite size and specific surface areas) and sinterability of the two powders were investigated in detail. Experimental results disclosed that the as-prepared porous powders exhibited a much lower degree of agglomeration, smaller average agglomerate particle size and larger surface areas and thus far higher sintering behavior than the denser powders.

scholarly journals Solution Combustion Synthesis of Cr2O3 Nanoparticles and the Catalytic Performance for Dehydrofluorination of 1,1,1,3,3-Pentafluoropropane to 1,3,3,3-Tetrafluoropropene

Molecules ◽  
2019 ◽  
Vol 24 (2) ◽  
pp. 361 ◽  
Author(s):  
Haili Wang ◽  
Wenfeng Han ◽  
Xiliang Li ◽  
Bing Liu ◽  
Haodong Tang ◽  
...  
Keyword(s):  
Particle Size ◽  
Combustion Synthesis ◽  
Reaction Rate ◽  
Crystal Size ◽  
Solution Combustion Synthesis ◽  
Catalytic Performance ◽  
Precipitation Method ◽  
Chromium Nitrate ◽  
Solution Combustion ◽  
Cr2o3 Nanoparticles

Cr2O3 nanoparticles were prepared by solution combustion synthesis (SCS) with chromium nitrate as the precursor and glycine as the fuel. Commercial Cr2O3 and Cr2O3 prepared by a precipitation method were also included for comparison. The morphology, structure, acidity and particle size of fresh and spent Cr2O3 catalysts were investigated by techniques such as XRD, SEM, TEM, BET and NH3-TPD. In addition, catalytic performance was evaluated for the dehydrofluorination of 1,1,1,3,3-pentafluoropropane (CF3CH2CHF2, HFC-245fa) to 1,3,3,3-tetra-fluoropropene (CF3CH=CHF, HFO-1234ze). The catalytic reaction rate of Cr2O3 prepared by SCS method is as high as 6 mmol/h/g, which is about 1.5 times and 2 times higher than that of precipitated Cr2O3 and commercial Cr2O3, respectively. The selectivity to HFO-1234ze for all the catalysts maintains at about 80%. Compared with commercial and precipitated Cr2O3, Cr2O3-SCS prepared by SCS possesses higher specific surface area and acid amount. Furthermore, significant change in the crystal size of Cr2O3 prepared by SCS after reaction was not detected, indicating high resistance to sintering.

SOLUTION COMBUSTION SYNTHESIS OF CaZrO3 USING MIXED FUEL

2010 ◽  
Vol 24 (31) ◽  
pp. 6107-6113 ◽  
Author(s):  
R. H. LIMSAY ◽  
R. A. TAYADE ◽  
C. B. TALWATKAR ◽  
S. P. YAWALE ◽  
S. S. YAWALE ◽  
...  
Keyword(s):  
Particle Size ◽  
Surface Area ◽  
Thermo Gravimetric Analysis ◽  
Fine Powder ◽  
Solution Combustion Synthesis ◽  
Bet Surface Area ◽  
Gravimetric Analysis ◽  
Solution Combustion ◽  
Metal Nitrates ◽  
Methods Of Synthesis

With the advent of nanotechnology, methods of synthesis have attained immense importance since it governs particle size of the materials. In this paper, we report synthesis of CaZrO 3 by simple and energy efficient method that produced ultra fine powder having particle size in the nanometers. Synthesis of CaZrO 3 was carried out using corresponding metal nitrates and mixed fuels i.e., glycine and urea at a temperature less than 500°C. The reaction was highly exothermic in nature. The product obtained was voluminous and foamy. The as synthesized CaZrO 3 is crystalline in nature. It required no further heating. The compound was indexed using standard indexing procedure and the lattice constants matches completely with those reported in the literature. Differential Thermal Analysis (DTA) and Thermo Gravimetric Analysis (TGA) results shows that the material is highly stable internally during the whole range of temperature studied i.e., up to 1000°C. The powder density of the material was calculated to be 5.6393 g cm -1. BET surface area was found to be 11.505 m 2/ g . The particle size was calculated using density and BET surface area values. The particle size of the as synthesized CaZrO 3 was found to be 92 nm. The product was further characterized using Scanning Electron Microscope and electrical conductivity.

scholarly journals The Effect of the Precursor Solution’s Pretreatment on the Properties and Microstructure of the SCS Final Nanomaterials

2019 ◽  
Vol 9 (6) ◽  
pp. 1200 ◽  
Author(s):  
Olga Thoda ◽  
Galina Xanthopoulou ◽  
George Vekinis ◽  
Alexander Chroneos
Keyword(s):  
Combustion Synthesis ◽  
High Speed ◽  
Solution Combustion Synthesis ◽  
Precursor Solution ◽  
Processing Parameters ◽  
Catalytic Performance ◽  
X Ray Diffraction ◽  
Solution Combustion ◽  
X Ray ◽  
Powder Properties

Nanostructured nickel-based catalysts were produced by solution combustion synthesis and it was found that their properties and structure depended on the pretreatment of the precursor solution. X-ray diffraction, N2 adsorption, and an infrared high-speed camera were used to follow the various synthesis steps and to characterize the obtained catalysts, while their catalytic activity was determined in the hydrogenation of maleic acid. It was determined that the amount of water used and the heating of the precursor solution under mild stirring up to 70 °C influenced the nickel nitrate–glycine–water complexes that were formed in the precursor solution in the form of dendrites. These play a key role in the solution combustion synthesis (SCS) reaction mechanism and in particular in the formation of nickel-based catalysts. Understanding the interrelationships between the processing parameters and the ensuing powder properties allowed an efficient optimization of the catalytic performance.

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