Epitaxy of Porous and Photocatalytically Active TiO2 Films at 50°C

2011 ◽  
Vol 64 (9) ◽  
pp. 1235 ◽  
Author(s):  
Gregory K. L. Goh ◽  
Kelvin Y. S. Chan ◽  
Gao S. Huang ◽  
Qui L. Tay
Keyword(s):  
Thin Films ◽  
Methylene Blue ◽  
Liquid Phase ◽  
Anatase Tio2 ◽  
Blue Dye ◽  
Tio2 Films ◽  
Methylene Blue Dye ◽  
Liquid Phase Deposition ◽  
Grown Film ◽  
Tio2 Thin Films

Epitaxial anatase TiO2 thin films were grown on (001) oriented SrTiO3 single crystal substrates by liquid phase deposition at 50°C. The film consisted of nanosized crystallites and exhibited a significant void fraction of 31 %. This contributed to the cracking of thicker films due to the generation of capillary stresses in the nanosized pores during drying. This porosity also comes in useful during the photodegradation of a methylene blue dye by an as-grown film.

Preparation and characterization of Au-dispersed TiO2 thin films by a liquid-phase deposition method

1996 ◽  
Vol 6 (12) ◽  
pp. 1879 ◽  
Author(s):  
Shigehito Deki ◽  
Yoshifumi Aoi ◽  
Hiroshi Yanagimoto ◽  
Katsuyuki Ishii ◽  
Kensuke Akamatsu ◽  
...  
Keyword(s):  
Thin Films ◽  
Liquid Phase ◽  
Liquid Phase Deposition ◽  
Deposition Method ◽  
Tio2 Thin Films

Nanostructured ZnO coated Bi2S3 thin films: Enhanced photocatalytic degradation of methylene blue dye

2018 ◽  
Vol 545 ◽  
pp. 383-389 ◽  
Author(s):  
S. Velanganni ◽  
A. Manikandan ◽  
J. Joseph Prince ◽  
C. Neela Mohan ◽  
R. Thiruneelakandan
Keyword(s):  
Thin Films ◽  
Methylene Blue ◽  
Photocatalytic Degradation ◽  
Blue Dye ◽  
Methylene Blue Dye

Selective photocatalysis on molecular imprinted TiO2 thin films prepared via an improved liquid phase deposition method

2009 ◽  
Vol 33 (8) ◽  
pp. 1673 ◽  
Author(s):  
Xiantao Shen ◽  
Lihua Zhu ◽  
Hongwei Yu ◽  
Heqing Tang ◽  
Shushen Liu ◽  
...  
Keyword(s):  
Thin Films ◽  
Liquid Phase ◽  
Liquid Phase Deposition ◽  
Deposition Method ◽  
Tio2 Thin Films

Removal study of the hormone17 alpha-ethynylestradiol and methylene blue dye from water using TiO2, Mn2O3 and TiO2/Mn2O3 thin films

2020 ◽  
Vol 31 (12) ◽  
pp. 9260-9269
Author(s):  
T. T. A. Rezende ◽  
L. M. P. Garcia ◽  
T. L. B. Ferreira ◽  
M. J. Godinho ◽  
R. M. Nascimento ◽  
...  
Keyword(s):  
Thin Films ◽  
Methylene Blue ◽  
Blue Dye ◽  
Methylene Blue Dye

Water Disinfection Using Fe3+ and N-Doped 3SnO2/TiO2 Thin Films Coated on Glass Fibers

2010 ◽  
Vol 148-149 ◽  
pp. 1501-1506 ◽  
Author(s):  
Lek Sikong ◽  
Peerawas Kongsong ◽  
Vishnu Rachpech
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Glass Fibers ◽  
Composite Films ◽  
Water Disinfection ◽  
Blue Dye ◽  
Tio2 Films ◽  
Methylene Blue Dye ◽  
Bacterial Inactivation ◽  
E Coli

The water disinfection efficiency of Fe3+ and N-doped 3SnO2/TiO2 composite and undoped films was investigated. The water containing E. coli with an initial concentration of 103 CFU/ml was treated by a photocatalytic reactor filled with 60 g of glass fibers coated with the catalytic films for 1-5 circulated cycles. The number of survival bacteria after treatment was evaluated with spread plate techniques. Furthermore, the photocatalytic reaction on degradation of methylene blue dye solution was also investigated in order to observe the correlation between the result of bacteria inactivation of the prepared films and that of photocatalytic activity on methylene blue degradation. It reveals that N-doping in the TiO2 composite films results in shifting absorption wavelength towards visible light, narrowing the energy band gap and acts as photo-generated electrons trapping site, leading to retardation of the electrons-holes recombination, while Fe3+ doping has a main effect on hindrance of anatase crystal growth of the composite films. Therefore, 20N/3SnO2/TiO2 composite thin film exhibits greater photocatalytic activity and disinfection efficiency than those of undoped and Fe3+ doped TiO2 films. It was found that the bacterial inactivation of the prepared films correlates closely to photocatalytic activity performed by degradation of methylene blue dye solution. The 20N/3SnO2/TiO2 composite film can kill E. coli 97% within 5 cycled water treatment (~93 min) while Fe3+/3SnO2/TiO2, undoped TiO2 and UV alone can kill only 62, 65 and 58%, respectively. The 20N/3SnO2/TiO2 films coated on glass fibers are expect to be applied as an antibacterial photocatalyst for water purification.

Rapid scavenging of methylene blue dye from a liquid phase by adsorption on alumina nanoparticles

RSC Advances ◽  
2015 ◽  
Vol 5 (19) ◽  
pp. 14425-14440 ◽  
Author(s):  
Sushmita Banerjee ◽  
Ravindra Kumar Gautam ◽  
Amita Jaiswal ◽  
Mahesh Chandra Chattopadhyaya ◽  
Yogesh Chandra Sharma
Keyword(s):  
Methylene Blue ◽  
Liquid Phase ◽  
Adsorption Behavior ◽  
Alumina Nanoparticles ◽  
Blue Dye ◽  
Methylene Blue Dye

The adsorption behavior of methylene blue on as-synthesized alumina nanoparticles has been investigated.

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