Surface Characteristics of Titanium Oxide Films Prepared by Micro-Arc Oxidation: Comparison of Direct Current Electrolysis and Pulse Electrolysis

Titanium oxide films were formed on the titanium surface by micro-arc oxidation (MAO) in Na3PO4 solution. Then the titanium oxide films were soaked by Fe (NO3)3 aqueous and calcined to improve the activity. The photocatalytic ability of titanium oxide films before and after surface treatment was evaluated by Rhodamine B aqueous solution. The results show that the photocatalytic degradation rate of titanium oxide films is low. After the surface treatment, the iron ion was doped on the titanium oxide films. It was found that the photocatalytic activity of the titanium oxide coatings was enhanced after Iron doped. The photocatalytic decoloration rate was increased from 15.1 % to 42 %.

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Frequency-dependent pulsed direct current magnetron sputtering of titanium oxide films

Journal of Vacuum Science & Technology A Vacuum Surfaces and Films ◽

10.1116/1.1351064 ◽

2001 ◽

Vol 19 (2) ◽

pp. 429-434 ◽

Cited By ~ 10

Author(s):

J.-Y. Kim ◽

E. Barnat ◽

E. J. Rymaszewski ◽

T.-M. Lu

Keyword(s):

Magnetron Sputtering ◽

Titanium Oxide ◽

Direct Current ◽

Oxide Films ◽

Frequency Dependent ◽

Direct Current Magnetron Sputtering ◽

Pulsed Direct Current ◽

Titanium Oxide Films

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Metallic sputtering growth of crystalline titanium oxide films on unheated glass substrate using inductively coupled plasma assisted direct current magnetron sputtering

Thin Solid Films ◽

10.1016/j.tsf.2008.08.128 ◽

2008 ◽

Vol 517 (2) ◽

pp. 699-703 ◽

Cited By ~ 7

Author(s):

Z.G. Li ◽

S. Miyake ◽

M. Makino ◽

Y.X. Wu

Keyword(s):

Magnetron Sputtering ◽

Titanium Oxide ◽

Direct Current ◽

Glass Substrate ◽

Inductively Coupled Plasma ◽

Oxide Films ◽

Inductively Coupled ◽

Direct Current Magnetron Sputtering ◽

Titanium Oxide Films

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Effects of Sulphuric Acid Treatment on Photocatalytic Red Dye of TiO2 Films Prepared by Micro-Arc Oxidation

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.113-116.2357 ◽

2010 ◽

Vol 113-116 ◽

pp. 2357-2361

Author(s):

Hui Dong Su ◽

Hong Lei Du

Keyword(s):

Photocatalytic Activity ◽

Photocatalytic Degradation ◽

Titanium Oxide ◽

Sulphuric Acid ◽

Acid Treatment ◽

Oxide Films ◽

Film Surface ◽

Photocatalytic Ability ◽

Micro Arc Oxidation ◽

Titanium Oxide Films

With tribasic sodium phosphate (Na3PO4) as electrolytic liquid, to adopt micro-arc oxidation (MAO) prepares titanium oxide films directly on the titanium net surface. In order to improve the photocatalytic activity of TiO2 films prepared by micro-arc oxidation, the titanium oxide films were treated by Sulphuric acid aqueous. The structures before and after surface acid treatment were characterized by XRD, SEM, EDX,and photocatalytic ability of titanium oxide coatings were evaluated by photocatalytic degradation of acid brilliant scarlet dye aqueous solution . It was found out that the titanium oxide films were mainly made of titanium and anatase. The sodium at titanium dioxide/itanium (TiO2/Ti) film surface was reduced after the Sulphuric acid treatment. The photocatalytic activity of the titanium oxide films were enhanced after Sulphuric acid treatment. When Sulphuric acidaqueous concentration is 0.1mol•L-1 and soak time is 18 hours, the TiO2/Ti films photocatalytic degradation rate increased from 15% to 31%.

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