Photocatalytic activity of titanium oxide prepared by liquid phase deposition (LPD)
Photocatalytic activity of titanium oxide prepared by liquid phase deposition (LPD)
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DOI：
10.1039/a801499j
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发表时间：
1998
影响因子：
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通讯作者：
Hirotsugu Kishimoto;K. Takahama;N. Hashimoto;Y. Aoi;S. Deki
中科院分区：
文献类型：
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作者：
Hirotsugu Kishimoto;K. Takahama;N. Hashimoto;Y. Aoi;S. Deki
在液相沉积（LPD）工艺中，在添加硼酸的情况下，从（NH4）2TiF6水溶液制备氧化钛粉末和薄膜。在此过程中，钛氟络合离子和金属氧化物在水溶液中通过化学平衡反应形成氧化钛粉末和薄膜。所制备的粉末和沉积的薄膜显示出与由钛醇盐制备的氧化钛不同的一些特征。所制备的粉末和沉积的薄膜包括TiO2（TiO2），并显示出光催化活性，而无需事先煅烧。在300 °C下煅烧，CH3CHO的分解速率达到最大值。LPD工艺使得在玻璃棉的整个表面上均匀地形成均匀的TiO2膜层。所制备的TiO2含有氟和氮。这些杂质的量在煅烧时减少。
Titanium oxide powder and thin films were prepared from an (NH4)2TiF6 aqueous solution upon addition of boric acid in a process denoted as liquid phase deposition (LPD). In this process, titanium oxide powder and films were formed by the chemical equilibrium reaction between titanium fluoro-complex ions and metal oxide in the aqueous solution. The prepared powder and deposited films showed some features which differed from titanium oxide prepared from titanium alkoxide. The prepared powder and the deposited films included anatase (TiO2) and showed photocatalytic activity without prior calcination. The decomposition rate of CH3CHO reached a maximum when the powder or films were calcined at 300 °C. The LPD process enabled a uniform layer of TiO2 film to form homogeneously on the entire surface of glass wool. The prepared TiO2 contained fluorine and nitrogen. The amount of these impurities was reduced upon calcination.