A Study of the Correlation Between the Physical Characteristics and Efficiency of TiO2 Photocatalyst Prepared with the Sol-Gel Method

作者：Chung Woojin; Kim Sungsu; Chang Soonwoong

来源：Journal of Nanoscience and Nanotechnology, 2016, 16(10): 11040-11045.

DOI：10.1166/jnn.2016.13286

• Pure Nano TiO2
• Sol-Gel Method
• Physical Characteristics
• Photocatalyst
• Constant k

TiO2 photocatalysts were prepared by the sol-gel method using different sintering temperatures and hydrolysis pH conditions, and were characterized using scanning electron microscopy, X-ray diffraction, and surface area analysis. The photocatalytic efficiencies of the prepared TiO2 samples were evaluated by their ability to promote the achromatization of the dye reactive orange 16 in a batch test reactor under UV irradiation. In addition, the correlation between the rate constant of the achromatization and the particle size and surface area of the catalysts was investigated. The efficiency appeared to be highest for particles with a size of 10-14 nm and a specific surface area of 70-80 m(2)g(-1). From these results, it was concluded that the photocatalytic efficiency is dependent on the particle size, crystallinity, and specific surface area of the catalyst.

• 出版日期2016-10