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高活性、易分离的二氧化钛纳米线光催化剂

余宇翔;徐东升

  Since Fujishima and Honda discovered the photocatalytic splitting of water on TiO2 e1ectrodes in 1972, TiO2 has attracted great attention for its widespread applications in solar cells, photocatalysts, photosplitting water and sensors. In this presentation, large-scale single-crystalline anatase TiO2 nanowires have been synthesized by controlling the reaction temperature and the acidic concentration through a hydrothermal reaction of H-titanate fibers. The obtained single-crystalline anatase TiO2 nanowires are highly active for photodegredation of organic pollutants. Due to their large aspect ratios, these nanowire photocatalysts have taken an important advantage over spherical powder catalysts for separating the catalyst from solution by sedimentation. Furthermore, we have demonstrated that these nanowire catalysts can be easily recycled without decrease of the photocatalytic activity. A combination of their unique features of low-cost, single-crystallinity, easy separation and recycling use, and highly photocatalytic activity suggest that these single-crystalline anatase TiO2 nanowires will provide possibility to future industrial applications in environmental pollutants cleaning up.……   
[关键词]:光催化;二氧化钛;纳米线
[文献类型]:会议论文
[文献出处]: 《中国化学会第二十五届学术年会论文摘要集(上册)2006年