Marked Enhancement of Photocatalytic Activity of P-Doped TiO2 with Hydrothermal Method

2010 ◽  
Vol 113-116 ◽  
pp. 2150-2153 ◽  
Author(s):  
Si Yao Guo ◽  
Feng Lu Wang ◽  
Jin Bing Sun ◽  
Lin Yang ◽  
Feng Zhang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Hydrothermal Method ◽  
Photoelectron Spectroscopy ◽  
Physical Adsorption ◽  
Anatase Phase ◽  
Titania Nanoparticles ◽  
X Ray Diffraction ◽  
X Ray ◽  
One Step ◽  
Doped Titania

Phosphor-doped titania nanoparticles were synthesized by a one step hydrothermal method. These samples which prepared by hydrothermal method exist in anatase phase has much higher photocatalytic activity for methylene blue (MB) degradation. In addition, MB degradation performance of the hydrothermal ones is also superior to that of the commercial P25. The resulting materials were characterized by X-ray diffraction (XRD), nitrogen physical adsorption at 77 K, X-ray photoelectron spectroscopy (XPS), etc. It can conclude the hydrothermal method proves to be more suitable to improve the photocatalytic performance.

Phosphorus Doped Titania Materials: Synthesis, Characterization and Visible-Light Photocatalytic Activity

2011 ◽  
Vol 183-185 ◽  
pp. 2059-2062 ◽  
Author(s):  
Song Han ◽  
Jin Bing Sun ◽  
Si Yao Guo ◽  
Li Jiang ◽  
Dong Po He
Keyword(s):  
Photocatalytic Activity ◽  
Hydrothermal Method ◽  
Photoelectron Spectroscopy ◽  
Physical Adsorption ◽  
Titania Nanoparticles ◽  
X Ray Diffraction ◽  
Materials Synthesis ◽  
X Ray ◽  
Titania Photocatalyst ◽  
Doped Titania

Hierarchical mesoporous Phosphor-doped titania nanoparticles were synthesized by two different method, that is roasting method and hydrothermal method. The samples prepared by hydrothermal method has much higher photocatalytic activity. In addition, MB degradation performance of the hydrothermal ones is also superior to that of the commercial P25. Therefore, the methylene blue (MB) degradation performance on the phosphorous-doped photocatalyst is much enhanced and superior to that of the commercial P25. The hydrothermal method proves to be very suitable for the synthesis of P-doped titania photocatalyst. The resulting materials were characterized by X-ray diffraction (XRD), nitrogen physical adsorption at 77 K, X-ray photoelectron spectroscopy (XPS), and solar light spectroscopy.

Preparation, Characterization of Nonmetal Doped TiO2 Nanoparticles with their Excellent Photocatalystic Properties

2011 ◽  
Vol 183-185 ◽  
pp. 2254-2257
Author(s):  
Ying Wei Wang ◽  
Yu Fei Li ◽  
Pei Han Yang
Keyword(s):  
Photoelectron Spectroscopy ◽  
Photocatalytic Performance ◽  
Anatase Phase ◽  
Titania Nanoparticles ◽  
X Ray Diffraction ◽  
X Ray ◽  
One Step ◽  
Doped Titania ◽  
Nonmetal Doping

Nonmetal (S, P) doped titania nanoparticles were synthesized by a one step hydrothermal method. These samples were calcined with different temperature, the sample exist in anatase phase has much higher photocatalytic activity for methylene blue (MB) degradation. The visible response and the higher UV activity of the different nonmetal doped TiO2make it possible to utilize solar energy efficiently to execute photocatalysis processes. The resulting materials were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), etc. It can conclude the nonmetal doping TiO2proves to be more suitable to improve the photocatalytic performance.

Hydrothermal Treatment and its Influence on the Structure of Nitrogen Doped Titania

2011 ◽  
Vol 393-395 ◽  
pp. 1255-1258
Author(s):  
Zhan Shu ◽  
Tao Zeng ◽  
Hou Juan Liu
Keyword(s):  
Photocatalytic Activity ◽  
Hydrothermal Method ◽  
Hydrothermal Treatment ◽  
Photoelectron Spectroscopy ◽  
Lattice Structure ◽  
Xenon Lamp ◽  
X Ray Diffraction ◽  
X Ray ◽  
One Step ◽  
Doped Titania

N-doped titania was synthesized by a one step hydrothermal method, which is characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The samples prepared by hydrothermal method demonstrate higher photocatalytic activity toward the degradation of methylene blue under xenon lamp which has similar spectra to solar light, and also is much superior to that of the commercial P25. In addition, the samples prepared by hydrothermal treatment could severely influence the crystal lattice structure. Morever, N-doped titania can further enhacnce the photocatalytic activity effectively, and hydrothermal treatment is a very suitable method for the synthesis of N-doped titania. This excellent performance could endow the as-prepared P-doped titania potential in purifying wastewater.

Hydrothermal Treatment and its Influence on the Structure of Phosphorous Doped Titania

2011 ◽  
Vol 287-290 ◽  
pp. 1775-1778
Author(s):  
Si Yao Guo ◽  
Feng Fei Wang ◽  
Li Jiang ◽  
Dong Po He
Keyword(s):  
Photocatalytic Activity ◽  
Hydrothermal Method ◽  
Hydrothermal Treatment ◽  
Photoelectron Spectroscopy ◽  
Lattice Structure ◽  
Sol Gel ◽  
Xenon Lamp ◽  
X Ray ◽  
One Step ◽  
Doped Titania

P-doped titania was synthesized by a one step hydrothermal method and sol-gel method, which is characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The samples prepared by hydrothermal method demonstrate higher photocatalytic activity toward the degradation of methylene blue under xenon lamp which has similar spectra to solar light, and also is much superior to that of the commercial P25. The as prepared P-doped titania shows a small particle size (the minimum reaches to 4.5 nm). In addition, the samples prepared by hydrothermal treatment could severely influence the crystal lattice structure. Morever, P-doped titania can further enhacnce the photocatalytic activity effectively, and hydrothermal treatment is a very suitable method for the synthesis of P-doped titania. This excellent performance could endow the as-prepared P-doped titania potential in purifying wastewater.

Preparation, Characterization of Phosphorus Doped Titania Photocatalysts with High Photocatalystic Properties

2010 ◽  
Vol 113-116 ◽  
pp. 2154-2157 ◽  
Author(s):  
Si Yao Guo ◽  
Jin Bing Sun ◽  
Feng Lu Wang ◽  
Lin Yang ◽  
Feng Zhang ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Titania Nanoparticles ◽  
Molar Ratio ◽  
X Ray Diffraction ◽  
Step Method ◽  
X Ray ◽  
One Step ◽  
Titania Photocatalyst ◽  
Calcination Method ◽  
Doped Titania

Phosphor-doped titania nanoparticles were synthesized by a one step method, which were prepared by conventional calcination method. These samples have much higher photocatalytic activity for methylene blue degradation. The resulting materials were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), etc. Moreover, we use high P/TiO2 molar ratio to get the most suitable proportion for the synthesis of P-doped titania photocatalyst.

Visible-Light-Driven TiO2 Catalysts Doped with Two Different Nonmetal Species by Hydrothermal Method

2011 ◽  
Vol 183-185 ◽  
pp. 591-594 ◽  
Author(s):  
Guang Sheng Chen ◽  
Si Yao Guo ◽  
Feng Zhang ◽  
Song Han
Keyword(s):  
Photocatalytic Activity ◽  
Hydrothermal Method ◽  
Photoelectron Spectroscopy ◽  
Organophosphorus Pesticide ◽  
X Ray Diffraction ◽  
X Ray ◽  
Anatase Titania ◽  
Visible Light Driven ◽  
Doped Titania ◽  
Test Result

The doping TiO2 were prepared by hydrothermal method with two different nonmetal, that is N-doped, and N, S codoped. The resulting materials were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS). According to the test result, nitrogen and sulfur co-doped titania give a higher photocatalytic activity in the degradation of organophosphorus pesticide. It was evidenced that the incorporation N in the anatase titania lattice in the form of O–Ti–N linkages. However, we compared with N-doped and N, S codoped it was no reservation to conclude that N, S codoped titania exhibit the further enhanced photocatalytic activity.

Effects of Calcination Temperature on Photoreduction Activity of Cu/TiO2 Nanoparticles

2011 ◽  
Vol 55-57 ◽  
pp. 1648-1652
Author(s):  
Jing Wei ◽  
Xin Tan ◽  
Tao Yu ◽  
Lin Zhao
Keyword(s):  
Calcination Temperature ◽  
Photoelectron Spectroscopy ◽  
Sol Gel ◽  
Chemical Properties ◽  
Titania Nanoparticles ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
One Step ◽  
Doped Titania

A one step sol-gel method was used for preparation of Cu doped titania nanoparticles (NPs). The crystal structures, morphologies and chemical properties were characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). We discussed the calcination temperature effection on the photoreduction activity of Cu/TiO2. When the calcination temperature was 500°C, the synthesized Cu/TiO2 performed the highest photocatalytic activity.

scholarly journals The three-dimensional flower-like Bi 2 WO 6 assisted by ethanolamine through a microwave method for efficient photocatalytic activity

2019 ◽  
Vol 6 (3) ◽  
pp. 181422
Author(s):  
Xingchen Liu ◽  
SuZhen Wang ◽  
Song Wang ◽  
Han Shi ◽  
Xiaolong Zhang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Photoelectron Spectroscopy ◽  
Three Dimensional ◽  
Catalytic Performance ◽  
Microwave Method ◽  
Photocatalytic Efficiency ◽  
X Ray Diffraction ◽  
Structure Directing Agent ◽  
X Ray ◽  
One Step

The three-dimensional flower-like Bi 2 WO 6 was synthesized through a one-step microwave method (the reaction temperature was 434 K and the reaction took 10 min) with the assistance of ethanolamine (EA). The prepared samples were characterized by X-ray diffraction, scanning electron microscopy, Fourier-transform infrared spectroscopy, ultraviolet–visible spectroscopy, PL, X-ray photoelectron spectroscopy and Brunauer–Emmett–Teller analysis. Methyl orange was used as target pollutant to evaluate the photocatalysis property of samples. Furthermore, the influence of the mechanism of EA on the structure and catalytic performance of Bi 2 WO 6 was discussed. The detailed characterizations revealed that the three-dimensional flower-like Bi 2 WO 6 was successfully synthesized with the assistance of EA. The results confirmed that EA significantly influenced the morphology of Bi 2 WO 6 products. The addition of EA can effectively alter the pressure of the reaction and improve the crystal phase and structure of Bi 2 WO 6 photocatalysts, enhancing the photocatalytic activity of samples and improving the photocatalytic efficiency. EA can serve as an assembling agent and structure-directing agent resulting in the formation of flower-like architectures. With the increase of the amount of EA, the as-prepared Bi 2 WO 6 sample gradually forms a flower-like structure, leading to a shorter time of light holes migrating to the surface of the catalyst. It makes the compound rate significantly decreased, and improves the photocatalytic efficiency of the sample.

Discussion the Mechanism of Sulfur and Phosphorus Doped TiO2

2011 ◽  
Vol 393-395 ◽  
pp. 1157-1160
Author(s):  
Tao Zeng ◽  
Hou Juan Liu ◽  
Zhan Shu
Keyword(s):  
Photocatalytic Activity ◽  
Photoelectron Spectroscopy ◽  
Xenon Lamp ◽  
X Ray Diffraction ◽  
One Pot ◽  
Preparation Methods ◽  
X Ray ◽  
Doping Mechanism ◽  
Doped Titania ◽  
Phosphorus Doped

Environmental pollution has become one of the most serious problems with the development of the world. TiO2 has caused great concern due to its excellent effort on the environmental purification and solar energy conversion. N, S-doped titania were prepared by a one-pot hydrothermalmethod using urea and sulfourea as precursor of nitrogen and sulfur. The samples were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS). The photocatalytic activity of them was evaluated for the degradation of methylene blue under xenon lamp which has similar spectra to solar light. The preparation methods and doping mechanism of the nitrogen-doped TiO2 are discussed. Morever, N, S-codoped titania can further enhacnce the photocatalytic activity effectively, This excellent performance could endow the as-prepared P-doped titania potential in purifying wastewater.

Photocatalytic Degradation of Indigo Carmine by ZnO-Cu2O/Graphene Oxide Composites Synthesized via Hydrothermal Method

2013 ◽  
Vol 668 ◽  
pp. 105-109 ◽  
Author(s):  
Huai Di Wu ◽  
Lu Sheng Chen ◽  
Jin Chao Hu
Keyword(s):  
Photocatalytic Activity ◽  
Graphene Oxide ◽  
Hydrothermal Method ◽  
Photoelectron Spectroscopy ◽  
Indigo Carmine ◽  
Synthesis Temperature ◽  
X Ray Diffraction ◽  
Synthesis Time ◽  
X Ray ◽  
Oxide Composites

In this work, ZnO–Cu2O/graphene oxide (GO) composites have been synthesized by using simple hydrothermal method. X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) were used to characterize the crystal structure and composite elements. The photocatalytic activity of the composites has been conducted by measuring the degradation of indigo carmine under UV irradiation. When the atom ratio of Zn/Cu is 5/2, 120 °C of hydrothermal synthesis temperature and 20 h of synthesis time, the ZnO/Cu2O/GO composite exhibits good photocatalytic activity with 96.5% degradation rate of indigo carmine aqueous solution under 500 W high pressure Hg lamp irradiation for 240 min.

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