Photocatalytic Degradation PS/B-F Co-Doped Nano-TiO2 Composite

2013 ◽  
Vol 726-731 ◽  
pp. 2252-2255
Author(s):  
Ying Ying Li ◽  
Zhong Hou Zhang ◽  
Zhao Lei Wang
Keyword(s):  
Surface Morphology ◽  
Composite Film ◽  
Photocatalytic Degradation ◽  
Hot Pressing ◽  
In Situ Polymerization ◽  
Sol Gel ◽  
Xenon Lamp ◽  
Gel Method ◽  
Co Doped

The B-F codoped nano-TiO2particles powders were prepared by the sol-gel method. The PS/B-F co-doped nano-TiO2composite was synthesized with in situ polymerization. The films of PS/SBS/B-F co-doped nano-TiO2composites were prepared by the hot-pressing machine, and the accelerated photodegradation of films were investigated with a 1000W xenon lamp. The surface morphology and Tg of the films in the process of degradation were detected by SEM and DSC. Results showed that the Tg of PS/SBS/B-F codoped nano-TiO2composite is the lowest of all samples. More and large holes were observed in the surface of PS/SBS/B-F codoped nano-TiO2composite film.

Visible Light Photocatalytic Degradation PVC/B-F Co-Doped TiO2 Composite

2011 ◽  
Vol 239-242 ◽  
pp. 2015-2018 ◽  
Author(s):  
Zhong Hou Zhang ◽  
Guang Xiu Cao ◽  
Ying Ying Li ◽  
Xiao Yan Wei
Keyword(s):  
Weight Loss ◽  
Visible Light ◽  
Composite Film ◽  
Photocatalytic Degradation ◽  
Solid Phase ◽  
Sol Gel ◽  
Tape Casting ◽  
Composite Films ◽  
Xenon Lamp ◽  
Visible Light Photocatalytic

The B-F codoped nano-TiO2 powders were prepared by the sol-gel method. The surface of powders was modified by stearic acid. The visible light photodegradable PVC/B-F codoped nano-TiO2 composite films were prepared by tape casting processing. Solid-phase visible light photocatalytic degradation of the films were investigated with a 1000W xenon lamp and a ZJB 420 filter glass was used to cut off light of wavelength <420 nm. The weight-loss measurement, SEM, DSC of films were detected. Results showed that the weight loss of PVC/B-F codoped nano-TiO2 composite film (2%TiO2 w/w) is 16.9% after 120h UV irradiation, which is notably higher than that of both the pure PVC film and the PVC/nano-TiO2 composite film. Glass transition (Tg) is appeared for samples after 72h irradiation, and the Tg of PVC/B-F codoped nano-TiO2 composite film is the lowest of all samples. The surface of PVC/B-F codoped nano-TiO2 composite film was destroyed obviously by SEM photo.

Studies on Photocatalytic Degradation of Methylene Blue by Eu3+/Gd3+ Co-Doped TiO2

2011 ◽  
Vol 80-81 ◽  
pp. 55-59
Author(s):  
Xu Dong Lu ◽  
Cheng Zhi Jiang ◽  
Xiao Hui Zhu
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Photocatalytic Degradation ◽  
Ph Value ◽  
Anatase Phase ◽  
Sol Gel ◽  
Gel Method ◽  
Grain Sizes ◽  
Co Doped

The 0.05%Gd3+ /0.4%Eu3+ co-doped TiO2 composite nanopowders have been prepared by sol-gel method and characterized by the techniques such as XRD, SEM/EDAX. The photocatalytic degradation of Methylene blue in aqueous solution was used as a probe reaction to evaluate their photocatalytic activity. The results show that the 0.05%Gd3+ /0.4%Eu3+ co-doped TiO2 are only structuresd by anatase phase with grain sizes of about 16nm at 540 °C for 4 h. The photocatalutic degradation of Methylene blue was 96.7% in 120 min of irradiation when the pH value was 9.

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.

Influence of Operating Parameters on Photocatalytic Degradation of Methylene Blue in UV/ Tb3+ and Sm3+ Co-Doped TiO2 Process

2012 ◽  
Vol 508 ◽  
pp. 224-227
Author(s):  
Xu Dong Lu ◽  
Cheng Zhi Jiang
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Photocatalytic Degradation ◽  
Key Words ◽  
Process Parameters ◽  
Sol Gel ◽  
Operating Parameters ◽  
Gel Method ◽  
Co Doped

0.1%Tb3+ and 0.2%Sm3+ co-doped TiO2 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, pH and initial methylene blue concentration on the extent of photodegradation have been investigated. The results show when the solution is at pH 7, with initial methylene blue concentration of 4 mg/L, the photodegradation is best. Key words:

Fabrication of F–Nb co-doped transparent conducting TiO2 films using the sol-gel method

2021 ◽  
Vol 126 ◽  
pp. 105675
Author(s):  
Yang Ren ◽  
Haiyan He ◽  
Yunwei Wang ◽  
Ying Gong ◽  
Gaoyang Zhao
Keyword(s):  
Sol Gel ◽  
Tio2 Films ◽  
Gel Method ◽  
Sol Gel Method ◽  
Transparent Conducting ◽  
Co Doped

Study on photocatalytic degradation of gaseous dichloromethane using pure and iron ion-doped TiO2 prepared by the sol–gel method

Chemosphere ◽  
2007 ◽  
Vol 66 (11) ◽  
pp. 2142-2151 ◽  
Author(s):  
Wen-Chi Hung ◽  
Ssu-Han Fu ◽  
Jeou-Jen Tseng ◽  
Hsin Chu ◽  
Tzu-Hsing Ko
Keyword(s):  
Photocatalytic Degradation ◽  
Sol Gel ◽  
Iron Ion ◽  
Gel Method ◽  
Doped Tio2 ◽  
Sol Gel Method
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