Synthesis and characterization of TiO2 powders by electrospray pyrolysis method |
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| Authors: | Yoshihiro Terada Yoshikazu Suzuki Susumu Tohno |
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| Affiliation: | 1. Graduate School of Energy Science, Kyoto University, Yoshida Honmachi, Sakyo-Ku, Kyoto 606-8501, Japan;2. Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan;1. Hasselt University, Institute for Materials Research, Inorganic and Physical Chemistry, Agoralaan Building D, B-3590 Diepenbeek, Belgium;2. Hasselt University, Institute for Materials Research, Materials Physics, Wetenschapspark 1, B-3590 Diepenbeek, Belgium;3. Flemish Institute for Technological Research, VITO N.V., Boeretang 200, B-2400 Mol, Belgium;4. Sirris Smart Coating Application Lab, Wetenschapspark 3, B-3590 Diepenbeek, Belgium;5. University of Antwerp, Laboratory of Adsorption and Catalysis, CDE, Universiteitsplein 1, B-2610 Wilrijk, Belgium;6. IMEC vzw, Division IMOMEC, Agoralaan Building D, B-3590 Diepenbeek, Belgium;1. College of Engineering Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan;2. Quantachrome Instruments Japan G.K., 3-2-1 Sakado, Takatsu-ku, Kawasaki, Kanagawa 213-0012, Japan;3. Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan;1. Nanotechnology and Advanced Materials Department, Materials and Energy Research Center (MERC), Karaj, 13145-1659, Iran;2. Civil & Environment Engineering Department, University of Hawaii Manoa, Hawaii, 96822, USA;3. Departement of Materials Science and Engineering, Sharif University of Technology, Tehran, 11365-9466, Iran;4. Department of Physics, Vali Asr University of Rafsanjan, Rafsanjan, 7718897111, Iran |
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| Abstract: | Electrospray pyrolysis, i.e. combination of electrospray and in-flight thermal treatment, has attracted much attention as a preparation method of functional ceramic particles. In this paper, we report the processing detail of spherical TiO2 nano- and microparticles by the electrospray pyrolysis method as well as their photocatalytic activity for hydrogen evolution. Titanium(IV) bis(ammonium lactato)dihydroxide aqueous solutions (TALH aq., 0.2–20 wt%) were injected into a capillary nozzle by a syringe pump (0.15–0.59 mL/min), and were electrosprayed by using DC 4 kV voltage, followed by the pyrolysis at 300–500 °C. Spherical TiO2 nano- and microparticles were successfully obtained. Effects of precursor-liquid concentration, liquid flow-rate, and pyrolysis temperature on the particle size, microstructure and functions were discussed. |
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