Influence of zirconium doping on the activities of zirconium and iodine co-doped titanium dioxide in the decolorization of methyl orange under visible light irradiation

2011 ◽  
Vol 257 (23) ◽  
pp. 10101-10108 ◽  
Author(s):  
Shuang Song ◽  
Fangyue Hong ◽  
Zhiqiao He ◽  
Hongyu Wang ◽  
Xianghong Xu ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Methyl Orange ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Light Irradiation ◽  
Zirconium Doping ◽  
Doped Titanium Dioxide ◽  
Co Doped

scholarly journals Synthesis of carbon self-doped titanium dioxide and its activity in the photocatalytic oxidation of styrene under visible light irradiation

2019 ◽  
Vol 15 (2) ◽  
pp. 291-297 ◽  
Author(s):  
Siti Hajar Alias ◽  
Nurul Najidah Mohamed ◽  
Leaw Wai Loon ◽  
Sheela Chandren
Keyword(s):  
Titanium Dioxide ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Photoelectron Spectroscopy ◽  
Photocatalytic Oxidation ◽  
Styrene Oxide ◽  
Light Irradiation ◽  
Tio2 Photocatalysts ◽  
X Ray ◽  
Doped Titanium Dioxide

Carbon self-doped titanium dioxide (C/TiO2) photocatalyst was synthesized by a simple sol-gel method using titanium isopropoxide as both the titanium precursor and carbon source. The effects of calcination temperatures in the range of 300 to 700 °C to the structure and physicochemical properties of the C/TiO2 were investigated by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) coupled with energy dispersive X-ray (EDX), Fourier transform infrared (FTIR) spectroscopy, UV-visible diffuse reflectance (UV-Vis DR) spectroscopy, photoluminescence spectroscopy, N2 adsorption-desorption and X-ray photoelectron spectroscopy (XPS). XPS results proved the presence of self-doped carbon at the interstitial and substitutional lattice of TiO2. The C/TiO2 calcined at 300 and 400 °C (C/TiO2-300 and C/TiO2-400, respectively) showed mesoporous characteristic and large surface area of about 100 m2 g-1. The C/TiO2 photocatalysts were then tested in the photo-oxidation of styrene under visible light irradiation with aqueous hydrogen peroxide as the oxidizing agent. The C/TiO2 photocatalysts were successfully activated under the irradiation of visible light, where C/TiO2-300 and C/TiO2-400 showed the highest total concentration of products (benzaldehyde and styrene oxide) at 1.1 mmol and 1.0 mmol, respectively.For video presentation, kindly please visit this link:

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