Photocatalytic Performance of PVP-Doped TiO₂ Nanorod Arrays Prepared by Hydrothermal Method

Abstract:

Here we synthesized a high-density single crystal anatase phase TiO₂/ITO nanorods array composite by one-step hydrothermal method. TiCl₄, H₂O, and HCl were used as the titanium precu-rsor, oxygen source, and inhibitors, respectively. The TiO₂ nanorods array were analyzed using X-ray diffraction (XRD), energy dispersive X-ray spectrometer (EDX), scanning electron microscopy (SEM), optical contact angle tester and ultraviolet-fluorescence spectrophotometer, separately. The nanorods in the composite grew along the [101] crystal plane, with a diameter of about 500 nm and a length of about 3 μm. The effect of PVP addition on the crystal phase and morphology of TiO₂ na-norod arrays was investigated. When the amount of PVP added was 0.5g, the diameter of nanorods was about 77-120nm, and a neat array structure appeared. In the photocatalytic experiment, methyl orange and acid red were used as degraded materials, the photocatalytic degradation rate was up to about 100%. When the hydrophilicity was the best, the optical contact angle of the sample after ultr-aviolet light irradiation was 7.2°. These results indicated that TiO₂ after doping experiments got better photocatalytic properties.

• Periodical: Materials Science Forum (Volume 984)
• Pages: 67-74
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.984.67
• Online since: April 2020
• Authors: Rui Li, Wen Qian Qi, Zhi Fan Zhou, Xuan Wang, Cheng Gong, Jin Yang, Jun Du*
• Keywords: Hydrothermal Method, Photocatalysis, PVP-Doped, Titanium Dioxide

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