Structure and Photocatalytic Properties of Fixed Porous TiO2 Composite Film on Steel Prepared by Plasma Electrolytic Oxidation

2012 ◽  
Vol 217-219 ◽  
pp. 1073-1076
Author(s):  
Yun Long Wang ◽  
Miao Wang ◽  
Mao Sun Xu ◽  
Yue Mei Qin
Keyword(s):  
Composite Film ◽  
Photocatalytic Degradation ◽  
Ultraviolet Light ◽  
Rhodamine B ◽  
Plasma Electrolytic Oxidation ◽  
Film Surface ◽  
Photocatalytic Properties ◽  
Ceramic Film ◽  
Electrolytic Oxidation ◽  
Plasma Electrolytic

TiO2 composite photocatalytic film was fixed on steel by by plasma electrolytic oxidation. The microstructure of the composite film were investigated by XRD, EDS and SEM. The photocatalytic properties of the film were studied by testing the photocatalytic degradation of Rhodamine B. The results showed that the ceramic film was composed of A-TiO2 and R-TiO2. The EDS revealed that the film consisted Ti, O, Si and Fe elements. The SEM pictures showed that the film surface was rough and porous. The photocatalytic experiment results showed that the the TiO2 composite film fixed on steel by plasma electrolytic oxidation exhibited relatively high photocatalytic photodegradation of Rhodamine B, whose removal ratio reached 90% in 2 hours, irradiation of ultraviolet light.

Characterization of TiO2 Composite Film on Steel Obtained in Aluminate Electrolyte by PEO and the Photocatalytic Activities

2013 ◽  
Vol 690-693 ◽  
pp. 1676-1679
Author(s):  
Yun Long Wang ◽  
Miao Wang ◽  
Yue Mei Qin ◽  
Xing Feng Shi ◽  
Hui Rong Guo ◽  
...  
Keyword(s):  
Composite Film ◽  
Rhodamine B ◽  
Irradiation Time ◽  
Film Surface ◽  
Removal Ratio ◽  
Treated Sample ◽  
Photocatalytic Activities ◽  
Electrolytic Oxidation ◽  
Plasma Electrolytic

TiO2 composite photocatalytic film was prepared on steel by plasma electrolytic oxidation in aluminate electrolyte. The microstructure of the composite film was investigated by XRD and SEM. The photocatalytic properties of the films treated with different time were studied by photocatalytic degradation of Rhodamine B with various irradiation time. The results revealed that the as prepared film was composed of crystal phase of much A-TiO2 and a little γ-Al2O3. The film surface was rough and porous. The pores are in the dimensions of 2-8 μm. The photocatalytic experimental results showed that for the same irradiation time, the removal ratio of Rhodamine B of the films gradually increased with increasing the treating time. For each film, the removal ratio of Rhodamine B of the film also gradually increased when increase the irradiation time. The 30 min treated sample exhibited a removal ratio of 80% in 2h irradiation of ultraviolet light.

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