Effect of pyrolysis temperature on structural, microstructural and optical properties of nanocrystalline ZnO powders synthesised by ultrasonic spray pyrolysis technique

Abstract Tin oxide (SnO2) and doped with various concentrations of copper oxide (CuO) of (3, 5, and 7%) nanoparticles were synthesized via a simple, cost-effective, and nontoxic ultrasonic spray pyrolysis technique on glass substrates. Crystalline structure, surface morphology of the SnO2 pure and SnO2:CuO, films have been studied by Field Emission Scanning Electron Microscopy (FESEM), Atomic Force Microscope (AEM) and X-Ray Diffraction (XRD). The effect of CuO doping on the electrical properties of SnO2 films was investigated using Hall effect measurments. The optical properties of the prepared films have been characterized by Ultraviolet-visible spectrophotometer. High distribution densily and good growth SnO2 and SnO2: CuO nanoparticles on the substrate with an average particles size ranged from 30 to 110 nm. The crystalling and grain size were changed according to the CuO doping ratio. There is a redshift within the UV-Vis spectra was observed with an increasing CuO ratio of (3, 5 and 7%)

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One-pot synthesis of hematite-alumina hollow sphere composite by ultrasonic spray pyrolysis technique with high adsorption capacity toward PAHs

Advanced Powder Technology ◽

10.1016/j.apt.2021.02.015 ◽

2021 ◽

Vol 32 (4) ◽

pp. 1060-1069

Author(s):

Hossein Vojoudi ◽

Jahan B. Ghasemi ◽

Ahmadreza Hajihosseinloo ◽

Bahareh Bastan ◽

Alireza Badiei

Keyword(s):

Spray Pyrolysis ◽

Adsorption Capacity ◽

Hollow Sphere ◽

Spray Pyrolysis Technique ◽

Ultrasonic Spray Pyrolysis ◽

High Adsorption ◽

One Pot ◽

Ultrasonic Spray Pyrolysis Technique ◽

Ultrasonic Spray ◽

High Adsorption Capacity

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Deposition of ZnO thin films by ultrasonic spray pyrolysis technique. Effect of the milling speed and time and its application in photocatalysis

Materials Science in Semiconductor Processing ◽

10.1016/j.mssp.2017.11.038 ◽

2018 ◽

Vol 75 ◽

pp. 288-295 ◽

Cited By ~ 11

Author(s):

Viridiana Mata ◽

Arturo Maldonado ◽

María de la Luz Olvera

Keyword(s):

Thin Films ◽

Spray Pyrolysis ◽

Spray Pyrolysis Technique ◽

Ultrasonic Spray Pyrolysis ◽

Zno Thin Films ◽

Technique Effect ◽

Ultrasonic Spray Pyrolysis Technique ◽

Ultrasonic Spray

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Fabrication and Characterization of Various Calcium Phosphate Powders by Ultrasonic Spray Pyrolysis Technique

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.317-318.57 ◽

2006 ◽

Vol 317-318 ◽

pp. 57-60

Author(s):

H.J. Wang ◽

Young Keun Jeong ◽

Kyung Sik Oh ◽

B.H. Kim ◽

Seong Hee Lee ◽

...

Keyword(s):

Heat Treatment ◽

Calcium Phosphate ◽

Spray Pyrolysis ◽

Single Phase ◽

Spray Pyrolysis Technique ◽

Calcium Phosphates ◽

Ultrasonic Spray Pyrolysis ◽

Ultrasonic Spray Pyrolysis Technique ◽

Starting Solution ◽

Ultrasonic Spray

To overcome the difficulty of preparing the stoichiometric single phase calcium phosphate materials, ultrasonic spray pyrolysis was used to fabricate various calcium phosphates. Effect of the initial Ca/P ratios and pyrolysis temperature were investigated in preparation of single phase materials. Also thermal stability of the obtained powders was estimated with the heat treatment in the air. Crystallinity of the powders was analyzed using XRD and FT-IR. The HAp and β-TCP powders with single phase could be obtained from their stoichiometric Ca/P ratios of 1.50 and 1.67, respectively. These single phase powders with good crystallinity and stoichiometry were stable with respect to heat treatment up to 1000oC. The particle size of these powders would be controlled by the concentration of starting solution.

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