Properties of anatase films for photocatalyst from peroxotitanic acid solution and peroxo-modified anatase sol
Properties of anatase films for photocatalyst from peroxotitanic acid solution and peroxo-modified anatase sol
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DOI：
10.2109/jcersj.104.914
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发表时间：
1996-10-01
影响因子：
1.1
通讯作者：
Katsuki, H
中科院分区：
文献类型：
--
作者：
Ichinose, H;Kawahara, A;Katsuki, H
采用过氧钛酸(PTA)溶液和过氧改性锐钛矿(PA)溶胶，采用浸渍提拉法在基片上制备了锐钛矿光催化剂薄膜。由PA溶胶制备的干燥膜已结晶为锐钛矿相，而由PTA溶液制备的膜在300℃以上结晶，膜在300℃时的附着力超过60 Mpa，相对密度超过80%。PA溶胶制备的薄膜光催化降解醋酸的效率高于PTA溶液制备的薄膜。在300℃以上的PA溶胶中制得的薄膜具有最高的催化活性。但是，薄膜厚度小于0.70微米时，光催化性能下降。
Anatase films for a photocatalyst have been prepared on substrates by a dip-coating technique using peroxotitanic acid (PTA) solution and peroxo-modified anatase (PA) sol. The as-dried film prepared from PA sol had already crystallized to anatase phase, while the film prepared from PTA solution crystallized above 300 degrees C. Adhesion strength of the films at 300 degrees C was over 60 MPa, and their relative density was over 80%. Photocatalytic efficiency of the film prepared from PA sol for the degradation of acetic acid was higher than that of the film prepared from PTA solution. The films obtained above 300 degrees C from PA sol exhibited the highest catalytic activity. However, the film less than 0.70 mu m thick resulted in decrease of photocatalysis.