Facile Synthesis of Large Scale Mesoporous TiO2 Microspheres by Template-free Hydrothermal Process: Their Photocatalysis Degradation

Debabrata Sarkar; Kalyan K. Chattopadhyay

doi:10.1117/12.927295

15 October 2012 Facile synthesis of large scale mesoporous TiO₂ microspheres by template-free hydrothermal process: their photocatalysis degradation

Debabrata Sarkar, Kalyan K. Chattopadhyay

Author Affiliations +

Proceedings Volume 8549, 16th International Workshop on Physics of Semiconductor Devices; 854927 (2012) https://doi.org/10.1117/12.927295
Event: 16th International Workshop on Physics of Semiconductor Devices, 2011, Kanpur, India

Abstract

In this study, well-crystallized mesoporous anatase TiO₂ microspheres were synthesized by simple hydrothermal reaction. These spheres are submicrometer-sized (the diameter size of about 1 to 3 μm) and consist of packed nanocrystallites with diameters of ~5 to 9nm. The products were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM) and UV-vis spectrophotometer. The 3D TiO₂ microspheres exhibited significant photocatalytic degradation and photocatalytic activity was evaluated via the photocatalytic oxidation of Rhodamine B (RhB) in air at room temperature. The result also shows that mesoporous microspheres followed Langmuir-Hinshelwood (L-H) kinetic model.

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Debabrata Sarkar and Kalyan K. Chattopadhyay "Facile synthesis of large scale mesoporous TiO₂ microspheres by template-free hydrothermal process: their photocatalysis degradation", Proc. SPIE 8549, 16th International Workshop on Physics of Semiconductor Devices, 854927 (15 October 2012); https://doi.org/10.1117/12.927295

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KEYWORDS

Titanium dioxide

Rhodamine B

Transmission electron microscopy

Photocatalysis

Ultraviolet radiation

Crystals

Diffraction

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