The effect of photonic band gap on the photo-catalytic activity of nc-TiO2/SnO2 photonic crystal composite membranes
The effect of photonic band gap on the photo-catalytic activity of nc-TiO2/SnO2 photonic crystal composite membranes
复制标题
光子带隙对nc-TiO2/SnO2光子晶体复合膜光催化活性的影响
DOI:
10.1016/j.cej.2014.03.075
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发表时间:
2014-08
影响因子:
15.1
通讯作者:
Liu Xue-Cheng
中科院分区:
文献类型:
--
作者:
Chen Sheng-Li;Wang Ai-Jun;Dai Chao;Benziger Jay B.;Liu Xue-Cheng
nc-TiO2/SnO2photonic crystal composite membranes were prepared by depositing nanocrystalline TiO2layers on top of inverse opal SnO2photonic crystals films. The photonic band gap of the SnO2photonic crystals layer was tuned by changing the particles size of polystyrene microspheres. Photons trapped in the SnO2photonic crystal layer are more effectively absorbed by TiO2at the TiO2/SnO2interface creating photoelectrons that assist in oxidation reactions. It was shown that the closer the photonic band gap of the phonic crystals layers matches the electronic band gap of TiO2catalyst layer, the higher the photocatalytic activity of the composite membranes. The photo-activity of TiO2can be enhanced by the synergistic effect of photonic crystal light localization at the SnO2/TiO2interface.
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影响因子:
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通讯作者:
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影响因子:
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