A Patterned-TiO 2 /SnO 2 Bilayer Type Photocatalyst
A Patterned-TiO 2 /SnO 2 Bilayer Type Photocatalyst
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DOI：
10.1021/jp000049r
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发表时间：
2000-04
影响因子：
3.3
通讯作者：
H. Tada;A. Hattori;Yoshifumi Tokihisa;K. Imai;N. Tohge;S. Ito
中科院分区：
文献类型：
--
作者：
H. Tada;A. Hattori;Yoshifumi Tokihisa;K. Imai;N. Tohge;S. Ito
非均相光催化的主要挑战是需要在没有任何施加电势的情况下在光照下提高光催化剂的电荷分离效率。采用有机改性的溶胶-凝胶法，在SnO 2薄膜涂层的钠钙玻璃基底上制备了规则图案的TiO 2薄膜。这种双层型光催化剂对气相反应表现出很高的光催化活性。有效的界面电子转移从TiO 2覆盖层的SnO 2下层被证明通过标记和可视化的还原位点与Ag颗粒。
A major challenge in heterogeneous photocatalysis is the need to increase charge separation efficiency of a photocatalyst, under illumination, without any applied electrical potential. Regularly patterned TiO2 films were formed on a SnO2-film coated soda lime glass substrate by using an organically modified sol−gel method. This bilayer-type photocatalyst exhibited a very high photocatalytic activity for gas-phase reactions. Efficient interfacial electron transfer from the TiO2 overlayer to the SnO2 underlayer was demonstrated by labeling and visualizing the reduction sites with Ag particles.