TiO2 Nanoparticles Synthesized with Ti(SO4)2 as Precursor via the Hydrothermal Method and their Optical Absorption Properties

Xiao Ming Fu

doi:10.4028/www.scientific.net/KEM.727.280

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 727TiO2 Nanoparticles Synthesized with Ti(SO4)2 as...

TiO₂ Nanoparticles Synthesized with Ti(SO₄)₂ as Precursor via the Hydrothermal Method and their Optical Absorption Properties

Abstract:

Anatase TiO₂ particles of about 20 nm in the diameter were successfully synthesized with Ti (SO₄)₂ as titanium source and stronger ammonia water as precipitant at 240°C for 48 h with pH=5 using the hydrothermal method. The samples were characterized by X-ray diffraction (XRD), transmission electron microscope (TEM) and ultraviolet-visible absorption spectroscopy (UV-VIS). XRD analysis showed that the phase of the samples was anatase TiO₂. TEM analysis confirmed that TiO₂ particles of about 50 nm in the diameter were obtained when the pH value was 0.12. With the increasement of the pH value, the size of as-prepared TiO₂ particles became remarkably fine. However, with the further increase of the pH value, the size of TiO₂ particles was not obvious. TiO₂ particles of about 20 nm in the diameter were obtained when the pH value was 5. And UV-VIS results showed that the size of anatase TiO₂ nanoparticles, which became small, was propitious to the blue shift of their absorption peak.

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Key Engineering Materials (Volume 727)

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280-283

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https://doi.org/10.4028/www.scientific.net/KEM.727.280

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Online since:

January 2017

Authors:

Xiao Ming Fu

Keywords:

Hydrothermal Method, Optical Absorption Properties, Ti(SO₄)₂, TiO₂ Nanoparticles

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