Ooi, Y. K. and Yuliati, L. and Lee, S. L. (2016) Phenol photocatalytic degradation over mesoporous TUD-1-supported chromium oxide-doped titania photocatalyst. Cuihua Xuebao/Chinese Journal of Catalysis, 37 (11). pp. 1871-1881. ISSN 0253-9837
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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 visible light irradiation. The TUD-1 supported Cr-TiO2 photocatalyst with a Si/Ti molar ratio of 30 exhibited the highest photodegradation of phenol (82%) of the prepared samples. The photodegradation of phenol by the supported catalyst followed the Langmuir adsorption isotherm with first-order kinetics.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Biodegradation, Chromium, Energy gap, Fourier transform infrared spectroscopy, High resolution transmission electron microscopy, Irradiation, Light, Mesoporous materials, Phenols, Photocatalysts, Pore size, Silicates, Titanium dioxide, Transmission electron microscopy, X ray diffraction, Langmuir adsorption isotherms, Low-angle X ray diffraction, Mesoporous, Photo catalytic degradation, Photocatalytic activities, Titania, TUD-1, Visible-light irradiation, Photodegradation |
| Subjects: | Q Science > QD Chemistry |
| Divisions: | Science |
| ID Code: | 71938 |
| Deposited By: | Fazli Masari |
| Deposited On: | 21 Nov 2017 08:17 |
| Last Modified: | 21 Nov 2017 08:17 |
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