文献类型：专利

英文题名：Visible photoactivating photo catalyst and light-column type packed bed reaction unit

作者：CHEN A;LIU W;LU G

机构：[1]UNIV EAST CHINA SCI & TECHNOLOGY

申请号：CN1214863-C

公开日：2005-08-17

语种：英文

收录：DERWENT

摘要：NOVELTY - The invention relates to a nitrogen-doped visible photosensitized TiO2 photocatalyst making method as well as its light-array type filling-fixed-bed photocatalysis fluid processing method and device. It evenly produces water and ammonia at the same time in the system by ammonium bicarbonate thermolysis, to make titanium tetrachloride carry out even hydrolysis and ammonolysis reactions to produce nitrogen-doped metatitanic acid fore body, which is treated at the nitrogen atmosphere under low temperature to obtain visible photosensitized nitrogen-doped nano TiO2 film or powder. DETAILED DESCRIPTION - The invention relates to a nitrogen-doped visible photosensitized TiO2 photocatalyst making method as well as its light-array type filling-fixed-bed photocatalysis fluid processing method and device. It evenly produces water and ammonia at the same time in the system by ammonium bicarbonate thermolysis, to make titanium tetrachloride carry out even hydrolysis and ammonolysis reactions to produce nitrogen-doped metatitanic acid fore body, which is treated at the nitrogen atmosphere under low temperature to obtain visible photosensitized nitrogen-doped nano TiO2 film or powder. The glass-tube ultraviolet light cannulas are uniformly distributed in the light-array type reactor, where the load-type photocatalyst is filled in the huddling mode in the air gap between the cannulas. It has advantages of moderate reacting condition, low heat treating temperature, etc. The photocatalysis reactor has advantages of continuous running, convenient operation, high efficiency, etc; can be applied to sewage treatment, drinking water's deep purification, waste gas treatment, etc.