Results 181 to 190 of about 3,115 (218)
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Magnetic and Porous Nanospheres from Ultrasonic Spray Pyrolysis
Journal of the American Chemical Society, 2005We have used an inexpensive high-frequency ultrasound generator from a household humidifier to create a useful source for ultrasonic spray pyrolysis and produced submicrometer silica particles that are porous on the nanometer scale. By using two heated zones, we first initiate polymerization of organic monomers in the presence of silica colloid, which ...
Won Hyuk, Suh, Kenneth S, Suslick
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Porous Carbon Powders Prepared by Ultrasonic Spray Pyrolysis
Journal of the American Chemical Society, 2006New, thermally robust meso- and macroporous carbon powders were prepared by ultrasonic spray pyrolysis (USP) of aqueous solutions using an inexpensive high-frequency ultrasound generator from a household humidifier. We choose our molecular precursors rationally, so that the expected decomposition pathways produce only remnant carbon atoms. Specifically,
Sara E, Skrabalak, Kenneth S, Suslick
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Journal of Alloys and Compounds, 2014 Herein, we synthesized non-agglomerated barium hexaferrite nanoparticles by salt-assisted ultrasonic spray pyrolysis at different reaction temperatures.
Guk-Hwan An +2 more
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Hydroxyapatite coatings by pulsed ultrasonic spray pyrolysis
Ceramics International, 2008Hydroxyapatite coatings on 316L stainless steel substrates were prepared using ultrasonic spray deposition with substrate temperature kept at 300 °C. Two spray patterns, continuous and pulsed (intermittent), were used coupled with precisely control of substrate movement.
G. Ye, T. Troczynski
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Nanostructured Carbons Prepared by Ultrasonic Spray Pyrolysis
Chemistry of Materials, 2010Porous carbon powders were prepared by ultrasonic spray pyrolysis of solutions of sucrose and sodium carbonate or bicarbonate. The decomposition of the carbonate salt evolves gases that create porosity in the carbon material without sacrificial templating agents. Microporous particles with a macroporous or hollow interior have been produced.
Maria E. Fortunato +2 more
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Anatase thin films by ultrasonic spray pyrolysis
Journal of Analytical and Applied Pyrolysis, 2010Abstract TiO 2 thin films were deposited on glass slides using ultrasonic spray pyrolysis at 400 °C for times in the range 30–120 min. All of the films consisted of fully dense polycrystalline anatase. The first-order growth kinetics were determined to be 11 nm/min, which is similar to those of other thin-film fabrication methods.
A. Nakaruk, D. Ragazzon, C.C. Sorrell
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Optoelectronic properties of ZnO:In thin films by ultrasonic spray pyrolysis
2014 11th International Conference on Electrical Engineering, Computing Science and Automatic Control (CCE), 2014Transparent and conductive Indium-doped zinc oxide (ZnO:In) thin films were deposited on glass substrates by the ultrasonic spray pyrolysis technique. ZnO:In thin films were prepared by mixing 0.2M zinc acetate and 0.2M indium sulphate dissolved in a mixture of water, acetic acid and methanol.
Roshan Biswal Rajesh +2 more
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Cu2ZnSnS4 thin films deposition by ultrasonic spray pyrolysis
Journal of Alloys and Compounds, 2012Abstract Cu 2 ZnSnS 4 (CZTS) thin films were deposited by ultrasonic spray pyrolysis technique. The substrate temperature was varied from 280 to 360 °C in order to investigate its influence on CZTS films properties. The deposition rate shows two activation energies 0.16 and 0.53 eV, respectively at low and high substrate temperatures. This indicates
W. Daranfed +4 more
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Modification of titania particles by ultrasonic spray pyrolysis of colloid
Journal of Materials Science, 1999Composite fine particles such as ZnO-TiO2, CdS-TiO2, ZnS-TiO2 and Ag-TiO2 were prepared by ultrasonic spray pyrolysis of metal salt aqueous solution in which TiO2 (Degussa P25) particles were suspended. The crystallinity, chemical compositions, and morphologies of the produced particles were investigated by XRD, centrifugal particle size analyzer, and ...
Jong Ho Lee +2 more
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Deposition of ZnO:Al Thin Films by Ultrasonic Spray Pyrolysis
Advanced Materials Research, 2010Transparent conducting Al-doped ZnO films were prepared by ultrasonic spray pyrolysis technique on amorphous glass substrates under atmospheric environment with substrate temperature ranging from 350 to 500 , and Al/ZnO molar ratio of 1, 3 and 5 %.
Lin Dong +3 more
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