The influence of synthesis method on the properties of iron contained N doped TiO2 photocatalysts
The influence of synthesis method on the properties of iron contained N doped TiO2 photocatalysts
复制标题
DOI：
10.1016/j.apcatb.2011.02.012
复制
发表时间：
2011-04
影响因子：
22.1
通讯作者：
Peilin Zhang;S. Yin;Tsugio Sato
中科院分区：
文献类型：
--
作者：
Peilin Zhang;S. Yin;Tsugio Sato
通过两种不同的方法制备了含Fe的TiO 2 − xNy，以控制最终产物中Fe的状态。通过一步水热法制备了Fe和N共掺杂的TiO 2，其晶相、光吸收性能和比表面积与TiO 2 − xNy相似。而Fe和N共掺杂则导致光催化活性下降，这是由于晶格空位的形成。另一方面，通过2步水热法，形成了TiO 2 −xNy/Fe 2 O3复合材料，其显示出优于TiO 2 − xNy上级可见光吸收能力，而不管比表面积的降低。TiO 2 −xNy/Fe 2 O3复合材料的优异脱硝性能可能是由于TiO 2 − xNy向Fe 2 O3的非均相电子转移阻碍了光生电子和空穴的快速复合。
Fe contained TiO2−xNywere prepared by two different methods to control the status of Fe in the final products. By a 1-step hydrothermal method, Fe and N co-doped TiO2which showed similar crystalline phases, photo absorption properties and specific surface areas to TiO2−xNywere formed. However, the Fe and N co-doping caused the decrease in photocatalytic activity, due to the formation of lattice vacancy. On the other hand, by a 2-step hydrothermal method, TiO2−xNy/Fe2O3composites were formed, which showed superior visible light absorption ability to TiO2−xNyregardless the decrease in specific surface areas. The excellent deNOxabilities of TiO2−xNy/Fe2O3composites may be due to the heterogeneous electron transfer from TiO2−xNyto Fe2O3to retard the quick recombination of photoinduced electrons and holes.