Nanowire Assemblies of Carbon Containing Mixed Phase TiO2 and Their Visible Light Photocatalytic Activities

作者：Huang Guo Lun; Jani Mona; Huang Yue Lin; Yeh Wang Chi Vincent^*

来源：Science of Advanced Materials, 2013, 5(10): 1444-1448.

DOI：10.1166/sam.2013.1641

• TiO2
• Nanowire
• Mixed Phase
• Visible-Light Photocatalytic Effects

We report on growth and visible light photocatalytic activity of carbon-containing mixed-phase TiO2 (C-TiO2) nanowires. The nanowires have been grown by oxidizing metallic titanium in an acetone-rich environment. SEM images show that the nanowires are randomly oriented, 5 to 10 mu m in length and around 350 nm in diameter. TEM analyses revealed a core-shell structure. The diameter of the core is around 50 nm, while the outer diameter of the shell is roughly 350 nm. SAED patterns revealed that the nanowires consist of a combination of carbon and TiO2. Confocal Raman spectroscopy confirmed that the core consists of mixed (anatase and rutile) phases of TiO2 crystalline structures and the shell contains carbonaceous species. The photocatalytic activity test (with methylene blue solution) showed significant results under visible light illumination.

• 出版日期2013-10
• 单位东华大学