Phenol photocatalytic degradation over mesoporous TUD-1-supported chromium oxide-doped titania photocatalyst

doi:10.1016/S1872-2067(16)62492-0

Abstract

Abstract:

Mesoporous Technische Universiteit Delft (TUD-1)-supported chromium oxide-doped titania (Cr-TiO₂) was developed as a promising photocatalyst for phenol photodegradation under visible light irradiation. Low-angle X-ray diffraction and Fourier transform infrared spectroscopy results confirmed the amorphous and mesoporous silicate framework of TUD-1 in TUD-1-supported Cr-TiO₂. The mesostructure of TUD-1 was further verified via N₂ adsorption-desorption analysis, which showed a type-IV isotherm with a narrow average pore size distribution of 3.9 nm and high surface area of >490 m²/g. Transmission electron microscopy analysis results indicated that TUD-1-supported Cr-TiO₂ contained nanoparticles and porous channels. An increase in band gap energy was observed after loading Cr-TiO₂ into TUD-1. Compared with that of unsupported Cr-TiO₂, TUD-1-supported Cr-TiO₂ showed higher photocatalytic activity for phenol degradation under visi-ble light irradiation. The TUD-1 supported Cr-TiO₂ photocatalyst with a Si/Ti molar ratio of 30 ex-hibited the highest photodegradation of phenol (82%) of the prepared samples. The photodegrada-tion of phenol by the supported catalyst followed the Langmuir adsorption isotherm with first-order kinetics.

Key words: Phenol, TUD-1, Titania, Photocatalyst, Mesoporous

Yee Khai Ooi, Leny Yuliati, Siew Ling Lee. Phenol photocatalytic degradation over mesoporous TUD-1-supported chromium oxide-doped titania photocatalyst[J]. Chinese Journal of Catalysis, 2016, 37(11): 1871-1881.

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URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(16)62492-0

https://www.cjcatal.com/EN/Y2016/V37/I11/1871

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