光催化
材料科学
电子顺磁共振
光致发光
离子
降水
晶体结构
催化作用
可见光谱
兴奋剂
Crystal(编程语言)
无机化学
光化学
分析化学(期刊)
化学
结晶学
核磁共振
物理
气象学
生物化学
有机化学
光电子学
色谱法
程序设计语言
计算机科学
作者
Jinzhu Ma,Hong He,Fudong Liu
标识
DOI:10.1016/j.apcatb.2015.05.003
摘要
We synthesized different Fe/TiO2 catalysts and studied the influence of Fe on the structure and performance of Fe/TiO2 as a photocatalyst to remove gaseous NO in air under visible light. The electron paramagnetic resonance results revealed that Fe ions substituted the Ti ions of TiO2 prepared by co-precipitation and homogeneous precipitation method. More Fe ions were incorporated into the crystal lattice of TiO2 prepared by co-precipitation method than that prepared by homogeneous precipitation method. No Fe ions were incorporated into the crystal lattice of TiO2 prepared by conventional wet impregnation method. Furthermore, Fe doping influenced the UV–vis absorption and photoluminescence of TiO2. The higher photocatalytic activity of Fe/TiO2 prepared by co-precipitation method was attributed to the synergistic effects of more visible light absorption and minimum electron hole recombination caused by the Fe ions incorporated into the crystal lattice of TiO2. Density functional theory calculations further confirmed the role of Fe on the electronic structure of TiO2.
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