Photolysis of water by p/n junction type iron complex oxides

本研究的目的是开发新型p/n结铁复合氧化物光催化剂，用于水制氢。在本研究的初始阶段，我们研究了铁氧化物p/n结的合成，但是合成非常困难。因此，我们尝试制备含氧化铁的纳米杂化光催化材料。我们选择了各种层状和纳米片状氧化物，如氧化铈，氧化锌，氧化石墨烯作为氧化铁的混合物。这些氧化物具有非常有趣的性质，如高量子效率的发光，有机化合物/ZnO纳米片的铁磁性，以及铁化合物的高氧还原催化活性。这些含有铁氧化物的混合物被测试为用于水光解的光催化剂。虽然上述复合催化剂的活性并不高，但我们得到了一些制备好的催化剂的启示。

The aim of this research is to develop new iron complex oxide photocatalysts consisting of p/n junction in order to produce hydrogen from water. In the initial stage of this research, we studied about synthesis of p/n junction of the iron oxide, but the synthesis was very difficult. Therefore, we tried to prepare nano-hybrid photocatalyst materials containing iron oxide. We selected various layered and nanosheet oxides such as ceria, zinc oxide, graphene oxide as the mixture to iron oxide. Theses oxides had very interesting properties such as luminescence with high quantum efficiency, ferromagnetism at the organic compound/ZnO nanosheets, and high oxygen reduction catalytic activity of iron compounds. These mixtures containing iron oxides were tested as the photocatalyst for water photolysis. We have gotten some hints to prepare good catalyst, although the above hybrid catalysts did not show high activity.