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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Rashid, Rumana
in Cooperation with on an Cooperation-Score of 37%
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Publications (4/4 displayed)
- 2019Ultrasonic-Assisted Synthesis, Characterization, and Photocatalytic Application of SiO2@TiO2 Core-Shell Nanocomposite Particlescitations
- 2019Ultrasonic-Assisted Synthesis, Characterization, and Photocatalytic Application of SiO2@TiO2Core-Shell Nanocomposite Particlescitations
- 2005X-ray diffraction and solid state NMR studies of the growth of hydroxyapatite on bioactive calcia : silica sol-gel glasses
- 2004Structural studies of bioactivity in sol-gel-derived glasses by X-ray spectroscopycitations
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article
Ultrasonic-Assisted Synthesis, Characterization, and Photocatalytic Application of SiO2@TiO2Core-Shell Nanocomposite Particles
Abstract
<jats:p>In this study, we report the synthesis of SiO<jats:sub>2</jats:sub>@TiO<jats:sub>2</jats:sub> core-shell nanocomposite particles by ultrasound irradiation of a mixture of dispersed SiO<jats:sub>2</jats:sub> nanoparticles, titanium-tetra-n-butoxide (TBOT), and ammonia in an ethanol-water solution medium. The resulting core-shell nanocomposite particles were characterized by SEM, TEM, FT-IR, XPS, XRF, zeta potential measurements, XRD, and UV-visible spectroscopy. Results showed that TiO<jats:sub>2</jats:sub> nanoparticles coated on the surface of SiO<jats:sub>2</jats:sub> were 6–10 nm in size and retained an anatase crystalline phase. Zeta potential measurements confirmed that the surface property of the SiO<jats:sub>2</jats:sub> changed after TiO<jats:sub>2</jats:sub> coating. SiO<jats:sub>2</jats:sub>@TiO<jats:sub>2</jats:sub> core-shell particles demonstrated better decolorization of methylene blue dye compared to commercial TiO<jats:sub>2</jats:sub> in aqueous solution under UV light. After treatment, the catalysts were separated with low-speed centrifugation and successfully reused four times without loss of activity. This study may provide some inspiration for the synthesis of other metal oxide-metal oxide core-shell nanocomposite materials through ultrasound irradiation.</jats:p>