Fe3+掺杂Bi3NbO7催化剂可见光降解碱性品红
Degradation of Basic Fuchsine under Visible-Light on Fe3+Doped Bi3NbO7
索红月 1阎美新 1申延明 1刘东斌 1樊丽辉1
作者信息
- 1. 沈阳化工大学化学工程学院,辽宁沈阳 110142
- 折叠
摘要
采用共沉淀法制备了 Fe3+掺杂Bi3NbO7催化剂,并利用XRD、SEM、TEM和BET对制备的样品进行表征.结果表明:制备的Fe3+掺杂Bi3NbO7晶相单一,Fe3+进入了 Bi3NbO7的晶格,呈现四方体和片状两种形状.可见光下对碱性品红染料降解测试结果显示:在碱性品红质量浓度为5 mg/L、催化剂添加量为1 g/L的条件下,光照240 min后碱性品红的降解率达到94.7％.光催化反应过程中,·OH和·O2-是主要的活性基团,反应过程中吸附起到一定的影响.Fe3+掺杂Bi3NbO7含有一定量的氧空位,有利于提高光催化活性.
Abstract
Fe3+doped Bi3NbO7 photocatalyst was prepared by coprecipitation method.The prepared samples were characterized by XRD,SEM,TEM and BET.The characterization results showed that Fe3+entered into the lattice of Bi3NbO7,forming a uniform phase.The sample exhibits cubic and lamellate shape.The photocatalytic activity test results showed that the prepared material gave a better visible light driven photocatalytic activity for basic fuchsine,that the degradation percentage of 94.7％can be obtained under the condition as the initiate fuchsine concentration of 5 mg/L,photocatalyst dosage of 1 g/L and ir-radiation time of 240 min.In the photocatalytic reaction process,·OH and·O2-are the main active radi-cals,and the effect of adsorption cannot be ignored.Oxygen vacancy in the Fe3+doped Bi3NbO7 benefits for the improvment of the photocatalytic activity under visible-light.
关键词
Bi3NbO7/Fe3+掺杂/可见光/碱性品红Key words
Bi3NbO7/Fe3+doped/visible light/basic fuchsine引用本文复制引用
出版年
2024
NETL
NSTL
万方数据