Direct Synthesis of Barium Titanate Nanoparticles Via a Low Pressure Spray Pyrolysis Method

2005 ◽  
Vol 20 (10) ◽  
pp. 2873-2882 ◽  
Author(s):  
Wei-Ning Wang ◽  
I. Wuled Lenggoro ◽  
Yoshitake Terashi ◽  
Yu-Cong Wang ◽  
Kikuo Okuyama
Keyword(s):  
Barium Titanate ◽  
Spray Pyrolysis ◽  
Direct Synthesis ◽  
Low Pressure ◽  
Spray Pyrolysis Method ◽  
Pyrolysis Method ◽  
Spray Method ◽  
Barium Titanate Nanoparticles ◽  
The One ◽  
Synthesis Of Barium Titanate

The one-step synthesis of barium titanate (BaTiO3) nanoparticles was studied by employing a low-pressure spray pyrolysis (LPSP) method. The effects of temperature, pressure, and the addition of urea to the precursor were investigated experimentally. The results were compared with the experimental data of the conventional (atmospheric) spray pyrolysis method. It was shown that the BaTiO3 nanoparticles could be synthesized by the low-pressure method, while only spherical hollow particles with smooth surfaces could be produced by the conventional spray method. The addition of urea greatly improved the crystal growth and particle breakup due to extra heat supplied during the combustion reaction coupled with the evolution of gases. The dispersity of nanoparticles increased with the quantity of urea and with a decrease in pressure. The possible mechanism of the formation of BaTiO3 nanoparticles in the LPSP process was also proposed.

Effects of Ethanol Addition and Ba/Ti Ratios on Preparation of Barium Titanate Nanocrystals Via a Spray Pyrolysis Method

2006 ◽  
Vol 89 (3) ◽  
pp. 888-893 ◽  
Author(s):  
Wei-Ning Wang ◽  
I. Wuled Lenggoro ◽  
Kikuo Okuyama ◽  
Yoshitake Terashi ◽  
Yu-Cong Wang
Keyword(s):  
Barium Titanate ◽  
Spray Pyrolysis ◽  
Spray Pyrolysis Method ◽  
Pyrolysis Method ◽  
Ethanol Addition

scholarly journals Structural and electrical properties of barium titanate (BaTiO3) thin films obtained by spray pyrolysis method

2015 ◽  
Vol 33 (4) ◽  
pp. 852-861 ◽  
Author(s):  
S.S. Kumbhar ◽  
M.A. Mahadik ◽  
P.K. Chougule ◽  
V.S. Mohite ◽  
Y.M. Hunge ◽  
...  
Keyword(s):  
Thin Films ◽  
Barium Titanate ◽  
Substrate Temperature ◽  
Spray Pyrolysis ◽  
Photoelectron Spectroscopy ◽  
Spray Pyrolysis Method ◽  
Heterogeneous Distribution ◽  
X Ray ◽  
Pyrolysis Method ◽  
Ferroelectric Hysteresis

AbstractBarium titanate (BaTiO3) thin films have been prepared using the spray pyrolysis method. The films were deposited onto a glass substrate at varying substrate temperature ranging from 250 to 350 °C with the interval of 50 °C. The structural, morphological, electrical and dielectric properties of the deposited films have been studied. The X-ray diffraction pattern confirmed the polycrystalline nature of the films with a cubic crystal structure. X-ray photoelectron spectroscopy (XPS) showed a good agreement of the thin films stoichiometry with BaTiO3. A presence of Ba, Ti and O in the BaTiO3 thin films was observed by energy dispersive X-ray analysis. The scanning electron microscopy (SEM) showed the heterogeneous distribution of cubical grains all over the substrate. The grain size decreased with an increase in substrate temperature. The dielectric constant and dielectric loss showed the dispersion behaviour as a function of frequency, measured in the frequency range of 20 Hz to 1 MHz. The AC conductivity (σac) measurement showed the linear nature of obtained films, which confirms conduction mechanism due to small polarons. Impedance spectroscopy has been used to study the electrical behaviour of BaTiO3 ferroelectric thin films. The ferroelectric hysteresis loop has been recorded at room temperature.

Growth of SnO2 nanowire arrays by ultrasonic spray pyrolysis and their gas sensing performance

RSC Advances ◽  
2014 ◽  
Vol 4 (82) ◽  
pp. 43429-43435 ◽  
Author(s):  
Jianbo Sun ◽  
Peng Sun ◽  
Dalin Zhang ◽  
Jing Xu ◽  
Xishuang Liang ◽  
...  
Keyword(s):  
Spray Pyrolysis ◽  
Tin Dioxide ◽  
Gas Sensing ◽  
Direct Synthesis ◽  
Ultrasonic Spray Pyrolysis ◽  
Nanowire Arrays ◽  
Spray Pyrolysis Method ◽  
Ultrasonic Spray ◽  
Pyrolysis Method ◽  
Sensing Performance

The direct synthesis of tin dioxide (SnO2) nanowire arrays on a glass substrate by using an ultrasonic spray pyrolysis method combined with sintering is demonstrated.

Electrochemical Performance of SOFC Components Fabricated by Spray Pyrolysis Method

2015 ◽  
Vol 68 (1) ◽  
pp. 2479-2490 ◽  
Author(s):  
G. Tsimekas ◽  
E. Papastergiades ◽  
N. E. Kiratzis
Keyword(s):  
Electrochemical Performance ◽  
Spray Pyrolysis ◽  
Spray Pyrolysis Method ◽  
Pyrolysis Method

ChemInform Abstract: The Photovoltaic Properties of Novel Narrow Band Gap Cu2SnS3Films Prepared by a Spray Pyrolysis Method.

ChemInform ◽  
2015 ◽  
Vol 46 (28) ◽  
pp. no-no
Author(s):  
Zhen Jia ◽  
Qinmiao Chen ◽  
Jin Chen ◽  
Tingting Wang ◽  
Zhenqing Li ◽  
...  
Keyword(s):  
Band Gap ◽  
Spray Pyrolysis ◽  
Narrow Band ◽  
Spray Pyrolysis Method ◽  
Photovoltaic Properties ◽  
Pyrolysis Method

scholarly journals Characteristics of nano-sized pb-based glass powders by high temperature spray pyrolysis method

2008 ◽  
Vol 116 (1353) ◽  
pp. 600-604 ◽  
Author(s):  
Jung Sang CHO ◽  
Dae Soo JUNG ◽  
Seung Kwon HONG ◽  
Yun Chan KANG
Keyword(s):  
High Temperature ◽  
Spray Pyrolysis ◽  
Spray Pyrolysis Method ◽  
Pyrolysis Method ◽  
Glass Powders
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