Fabrication and photo-catalytic properties of pure and cation doped TiO2 nanotube arrays
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Abstract:
The highly ordered and vertically oriented pure TiO2 nanotube arrays (TONTAs) are synthesized by anodic oxidation of titanium foils in fluoride-based electrolytes under different temperatures and voltages. Then TONTAs are treated at different temperatures. X-ray diffraction (XRD) patterns show that its structure is anatase at 500 °C with the temperature increasing to 700 °C, the most of anatase will transform to rutile, the nanotube arrays form granular titanium oxide, while at 900 °C, anatase will transform to rutile completely. The experimental results of photocatalytic degradation of methylene blue solution show that the cobalt-manganese co-doped TONTAs have good photocatalytic degradation efficiency.
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This work has been supported by the National Natural Science Foundation of China （No. 11105117）, Province Natural Science Foundation of Shandong （No.Y2004A 11） and Yantai University Postdoctoral Foundation （No.WL03B 15）.
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