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<strong>Hydrothermal synthesis and enhanced sunlight photoactivity of Gd, N, and P tri-doped anatase-TiO2 by TiCl4 hydrolysis</strong>

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Title Statement <strong>Hydrothermal synthesis and enhanced sunlight photoactivity of Gd, N, and P tri-doped anatase-TiO2 by TiCl4 hydrolysis</strong>
 
Added Entry - Uncontrolled Name Jiang, Hongquan ; Harbin Normal University
Gao, Mengdie ; Key laboratory of Design and Synthesis of Functional Materials and Green Catalysis, Colleges of Heilongjiang Province, Harbin Normal University
Zang, Shuying ; Key laboratory of Remote Sensing Monitoring of Geographic Environment, Colleges of Heilongjiang Province, Harbin Normal University
Li, Jingshen ; Key laboratory of Design and Synthesis of Functional Materials and Green Catalysis, Colleges of Heilongjiang Province, Harbin Normal University
Wang, Xuefeng ; Key laboratory of Design and Synthesis of Functional Materials and Green Catalysis, Colleges of Heilongjiang Province, Harbin Normal University
The National Nature Science Foundation of China (No.41030743), the Nature Science Foundation of Heilongjiang Province (No.E201323), the Harbin Special Fund for Innovation Talents of Science and Technology (No.2013RFXXJ081)
 
Uncontrolled Index Term Gd, N, and P tri-doping; Hydrolysis; Photocatalysis; Synergetic effect; Titanium dioxide; TiCl4
 
Summary, etc. Gd, N, and P tri-doped anatase-TiO<sub>2</sub> (GNPTO) nano-photocatalyst has been synthesized from TiCl<sub>4</sub> hydrolysis using gadolinium nitrate, urea, and phosphoric acid as dopant sources via a hydrothermal process followed by calcination at 400°C. The physicochemical properties of as-synthesized samples have been investigated by X-ray diffraction, transmission electron microscopy, N<sub>2</sub> physical adsorption-desorption, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, UV-vis absorbance spectroscopy, and photoluminescence spectroscopy techniques. Doped P in the TiO<sub>2</sub> lattices plays a predominant role in inhibiting the phase transformation and crystal growth, and in improving the surface textural properties. Gd, N, and P tri-doping inhibits the recombination of photogenerated electrons and holes, increases the surface hydroxyls, and improves the UV absorption. GNPTO exhibits the highest photoactivity towards 4-chlorophenol (4-CP) degradation under simulated sunlight irradiation among the undoped, doped, and P25 TiO<sub>2</sub>. ·OH radicals play a key role in 4-CP degradation, and photogenerated electrons also play a minor role through the final formation of ·OH via H<sub>2</sub>O<sub>2</sub>. Synergetic mechanism of the enhanced photoactivity for GNPTO has also been discussed.
 
Publication, Distribution, Etc. Indian Journal of Chemical Technology (IJCT)
2016-06-02 10:07:12
 
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http://op.niscair.res.in/index.php/IJCT/article/view/6117
 
Data Source Entry Indian Journal of Chemical Technology (IJCT); ##issue.vol## 23, ##issue.no## 3 (2016): Indian Journal of Chemical Technology
 
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