Synthesis of Three-Dimensionally Ordered Macroporous (3DOM) TiO2: Photodegradation Catalyst

Thipchanok Bowornhathai; Potjanart Suwanruji; Jantip Setthayanond; Sutasinee Kityakarn; Supakit Achiwawanich

doi:10.4028/www.scientific.net/KEM.735.132

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 735Synthesis of Three-Dimensionally Ordered...

Synthesis of Three-Dimensionally Ordered Macroporous (3DOM) TiO₂: Photodegradation Catalyst

Abstract:

Three-dimensionally ordered macroporous (3DOM) TiO₂ were successfully synthesized by incorporating colloidal crystal template and sol-gel method using titanium isopropoxide and ethanol as precursors. After calcination at 450°C, the synthesized photocatalyst was characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and diffuse reflectance UV-VIS spectroscopy (DR/UV-VIS). XRD results indicated that only anatase was presented. SEM images illustrated highly ordered macroporous structure which was a characteristic for 3DOM materials. The band gap energy of 3DOM TiO₂ and nanoparticles TiO₂ (NP TiO₂) were 3.26 eV and 3.23 eV, respectively. Although the band gap value of 3DOM TiO₂ similar to NP TiO₂ but the photocatalytic performance of the 3DOM TiO₂ were higher than that of commercial nanoparticle TiO₂. The result suggested that its ordered porous structure is great advantage for photocatalysis.

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Key Engineering Materials (Volume 735)

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132-135

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.735.132

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Online since:

May 2017

Authors:

Thipchanok Bowornhathai, Potjanart Suwanruji, Jantip Setthayanond, Sutasinee Kityakarn, Supakit Achiwawanich*

Keywords:

3DOM, Photocatalyst, TiO₂

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