Preparation of N-Ce Co-Doped TiO2 Nanopaticles and their Photocatalytic Performance under Visible Light

2012 ◽  
Vol 457-458 ◽  
pp. 1035-1038 ◽  
Author(s):  
Gui Hua Li ◽  
An Feng Wang
Keyword(s):  
Methylene Blue ◽  
Visible Light ◽  
Reaction Temperature ◽  
Degradation Rate ◽  
Photocatalytic Performance ◽  
Sol Gel ◽  
Solution Ph ◽  
Catalyst Amount ◽  
Sol Gel Process ◽  
Co Doped

In this present work, N-Ce co-doped TiO2 nanopaticles were prepared via sol-gel process and characterized by TG - DTA and XRD. Their performance of photocatalytic degradation of methylene blue under visible light were investigated. N-Ce co-doped TiO2 appeared to be somewhat more efficient than the starting TiO2. The effects of catalyst compsition, catalyst amount, reaction temperature and solution pH on their photocatalytic activity towards methylene blue were studied and discussed. Experiment results depicted that activeness of catalyst N0.4Ce0.06/TiO2 was highest. Using this catalyst, when the catalyst amount was 0.3 g/L，the reaction temperature was 40 °C and pH of the solution was 9.0 the degradation rate of mehylene blue in 4h could reach 94.00%.

Preparation, Characterization, and Photocatalytic Property of N-La Co-Doped TiO2 with Visible Light Response

2012 ◽  
Vol 529 ◽  
pp. 537-540 ◽  
Author(s):  
Gui Hua Li ◽  
An Feng Wang
Keyword(s):  
Visible Light ◽  
Reaction Temperature ◽  
Catalyst Activity ◽  
Sol Gel ◽  
Photocatalytic Property ◽  
Light Response ◽  
Catalyst Amount ◽  
Doped Tio2 ◽  
Sol Gel Process ◽  
Co Doped

N-La co-doped TiO2 has been synthesized via sol-gel process. The XRD result showed that the structure of N-La co-doped TiO2 was anatase. Their performance of photocatalytic degradation of methylene blue under visible light were investigated. The combined effects of catalyst compsition, calcination temperature, catalyst amount and reaction temperature on catalyst activity were investigated. Experiment results depicted that activeness of catalyst N2.5La0.5/TiO2 calcinated at 500°C for 2h was highest. Using this catalyst, when the catalyst amount was 0.35 g/L, the reaction temperature was 40°C the degradation rate of mehylene blue in 4h could reach 96.5%.

scholarly journals Visible-enhanced photocatalytic performance of CuWO4/WO3 hetero-structures: incorporation of plasmonic Ag nanostructures

2018 ◽  
Vol 42 (13) ◽  
pp. 11109-11116 ◽  
Author(s):  
R. Salimi ◽  
A. A. Sabbagh Alvani ◽  
N. Naseri ◽  
S. F. Du ◽  
D. Poelman
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Photocatalytic Performance ◽  
Sol Gel ◽  
Light Irradiation ◽  
Photo Degradation ◽  
Gel Method ◽  
Sol Gel Method

A new plasmonic Ag hybridized CuWO4/WO3 heterostructured nanocomposite was successfully synthesized via a ligand-assisted sol gel method and the photocatalytic activity was evaluated by photo-degradation of methylene blue (MB) under visible light irradiation.

scholarly journals Photocatalytic Performance of SiO2/CNOs/TiO2 to Accelerate the Degradation of Rhodamine B under Visible Light

Nanomaterials ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1671 ◽  
Author(s):  
Weike Zhang ◽  
Yanrong Zhang ◽  
Kai Yang ◽  
Yanqing Yang ◽  
Jia Jia ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Rhodamine B ◽  
Photoelectron Spectroscopy ◽  
Degradation Rate ◽  
Photocatalytic Performance ◽  
Sol Gel ◽  
X Ray Diffraction ◽  
X Ray ◽  
Electronic Microscope

A silicon dioxide/carbon nano onions/titanium dioxide (SiO2/CNOs/TiO2) composite was synthesized by a simple sol-gel method and characterized by the methods of X-ray diffraction (XRD), scanning electronic microscope (SEM), X-ray photoelectron spectroscopy (XPS), Brunauer–Emmett–Teller (BET), Fourier transform infrared (FTIR), thermogravimetric analysis (TG), differential scanning calorimeter (DSC) and UV-Vis diffuse reflectance spectra (UV-Vis DRS). In this work, the photocatalytic activity of the SiO2/CNOs/TiO2 photocatalyst was assessed by testing the degradation rate of Rhodamine B (RhB) under visible light. The results indicated that the samples exhibited the best photocatalytic activity when the composite consisted of 3% CNOs and the optimum dosage of SiO2/CNOs/TiO2(3%) was 1.5 g/L as evidenced by the highest RhB degradation rate (96%). The SiO2/CNOs/TiO2 composite greatly improved the quantum efficiency of TiO2. This work provides a new option for the modification of subsequent nanocomposite oxide nanoparticles.

scholarly journals Facile synthesis of mesoporous titanium dioxide doped by Ag-coated graphene with enhanced visible-light photocatalytic performance for methylene blue degradation

RSC Advances ◽  
2017 ◽  
Vol 7 (41) ◽  
pp. 25314-25324 ◽  
Author(s):  
Lin Xiao ◽  
Li Youji ◽  
Chen Feitai ◽  
Xu Peng ◽  
Li Ming
Keyword(s):  
Methylene Blue ◽  
Titanium Dioxide ◽  
Visible Light ◽  
Photocatalytic Performance ◽  
Solvothermal Method ◽  
Sol Gel ◽  
Facile Synthesis ◽  
Methylene Blue Degradation ◽  
Visible Light Driven ◽  
Visible Light Photocatalytic

A highly efficient and elaborately structured visible-light-driven catalyst composed of mesoporous TiO2 (MT) doped with Ag+-coated graphene (MT-Ag/GR) has been successfully fabricated by a sol–gel and solvothermal method.

Synthesis of visible-light responsive C, N and Ce co-doped TiO2 mesoporous membranes via weak alkaline sol–gel process

2012 ◽  
Vol 22 (30) ◽  
pp. 15309 ◽  
Author(s):  
Xue Ping Cao ◽  
Dan Li ◽  
Wen Heng Jing ◽  
Wei Hong Xing ◽  
Yi Qun Fan
Keyword(s):  
Visible Light ◽  
Sol Gel ◽  
Doped Tio2 ◽  
Sol Gel Process ◽  
Mesoporous Membranes ◽  
Co Doped

Influence of Sm3+ and Gd3+ Co-Doping on Photocatalytic Activity of TiO2

2011 ◽  
Vol 239-242 ◽  
pp. 1045-1048
Author(s):  
Xu Dong Lu ◽  
Cheng Zhi Jiang
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Phase Transformation ◽  
Photocatalytic Activity ◽  
Degradation Rate ◽  
Sol Gel ◽  
Nano Particles ◽  
Co Doping ◽  
The Matrix ◽  
Co Doped

Pure TiO2, Sm3+and Gd3+co-doping TiO2have been prepared by sol-gel method and characterized by the techniques such as XRD and SEM. The photocatalytic degradation of methylene blue (MB) in aqueous solution was used as a probe reaction to evaluate Pure TiO2, Sm3+and Gd3+co-doping TiO2photocatalytic activity. The matrix distortion of TiO2increases after co-doping of Sm3+and Gd3+are clearly observed. The results show that co-doping of Sm3+and Gd3+inhibits the phase transformation of TiO2from anatase to rutile, decreases the diameter of TiO2nano-particles and significantly enhance the photocatalytic activity of TiO2. When the co-doped amounts for Sm3+and Gd3+are 0.1% and 0.2%, its degradation rate reaches 99%.

Magnetic Composite Fe3O4/CuO/TiO2 Nanoparticles: Preparation, Characterization and Photocatalytic Activity

2015 ◽  
Vol 827 ◽  
pp. 13-18 ◽  
Author(s):  
Shofianina Jalaludin ◽  
Sarah A. Arifin ◽  
Rosari Saleh
Keyword(s):  
Methylene Blue ◽  
Degradation Rate ◽  
Photocatalytic Performance ◽  
Sol Gel ◽  
Cuo Nanoparticles ◽  
Composite Nanoparticles ◽  
Molar Ratio ◽  
Magnetic Composite ◽  
Photocatalytic Efficiency ◽  
Structure Morphology

Magnetic composite Fe3O4/TiO2/CuO nanoparticles have been synthesized by sol-gel method at low temperature. The resultant composite nanoparticles coupled with different Cu contained by adjusting the molar ratio of CuO to (Fe3O4/TiO2) from 1:1 – 5:1. The structure, morphology and properties of nanoparticles were characterized using XRD, EDX, FESEM and VSM. The results showed that all composite nanoparticles consist of cubic spinel Fe3O4, anatase TiO2 and monoclinic CuO, have ferromagnetic properties. The photocatalytic performance was evaluated using methylene blue in aqueous solutions under UV and visible light irradiation. Among the composite Fe3O4/TiO2/CuO nanoparticles, the sample with the molar ratio of CuO to (Fe3O4/TiO2) = 5 : 1 exhibited the highest photocatalytic efficiency. Photocatalytic mechanism was investigated by measuring the photocatalytic degradation rate in the presence of scavenger. The results suggested that holes play the most important role in degradation of methylene blue.

Photocatalytic Degradation of Methylene Blue Using Eu3+ and Sm3+ Co-Doped TiO2

2011 ◽  
Vol 148-149 ◽  
pp. 365-368
Author(s):  
Cheng Zhi Jiang ◽  
Xu Dong Lu
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Photocatalytic Degradation ◽  
Process Parameters ◽  
Sol Gel ◽  
H2o2 Concentration ◽  
Solution Ph ◽  
Gel Method ◽  
Co Doped

Abstract: The 0.05%Eu3+ and 0.1%Sm3+ co-doped TiO2 composite nanoparticles have been prepared by sol-gel method and characterized by the techniques such as XRD and SEM/EDAX. The photocatalytic degradation of Methylene blue in aqueous solution was used as a probe reaction to evaluate their photocatalytic activity. The effects of process parameters like, solution pH and H2O2 concentration on the extent of photodegradation have been investigated.

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