制备因素对光催化合成氨α-Fe_2O_3基催化剂活性及结构的影响

Effects of Preparation Parameters on the Activity and Structure of α Fe 2O 3 Based Photocatalyst for Photocatalytic Synthesis of Ammonia

制备因素对光催化合成氨α－Ｆｅ２Ｏ３基催化剂活性及结构的影响张长拴罗志峰高强（郑州大学化学系郑州４５００５２）王德军李铁津（吉林大学化学系长春１３００２３）关键词光催化剂催化活性结构特性光电压谱光电子能谱分类号Ｏ６４３．３２利用ＴｉＯ２和α－Ｆｅ２Ｏ...

The effects of La 2O 3、 Tb 4O 7、 Eu 2O 3、 Co(NO) 2 doping and temperature on the activity of photocatalytic synthesis of ammonia and structure of Me/α Fe 2O 3 type (Me=La, Co, Tb, Eu) photocatalysts were studied. The structure of the photocatalysts was characterised by SPV (photovoltage spectroscopy) and XPS. Results show that the photocatalytic activities are very much different with different doping. Activity of the catalyst doped with La 2O 3 is higher. It is 674.0 μmol/(g·h). 1400℃ is the suitable temperature. SPV and XPS results show that the absorbing structure at 350 400nm and the increase of La3d electron binding energy are related to the activities of La/α Fe 2O 3 photocalysts.