石英基多层纳米TiO2-FeOOH复合材料的制备和

石英基多层纳米TiO₂-FeOOH复合材料的制备和

显微结构的表征

谢裕兴¹，孙振亚^2*，李涵¹，周道坤¹，杨红刚¹，方继敏¹

（武汉理工大学1.资源与环境工程学院；2.材料研究与测试中心，湖北 武汉430070)

摘要  以石英玻璃片为基底，利用自组装技术在TiCl₄-HCl体系中生长纳米TiO₂，与在Fe(NO3)₃-HNO₃体系中生长纳米FeOOH制备负载型多层不同层序FeOOH-TiO₂纳米复合薄膜光催化材料。高分辨率透射电镜(HRTEM)表征结果显示：复合膜由纳米锐钛矿和针铁矿构成。UV-Vis表征结果显示：TiO₂与FeOOH间的复合使TiO₂吸收带均发生一定程度的红移，其中FeOOH/TiO₂/FeOOH/TiO₂和FeOOH/TiO₂/FeOOH复合薄膜的吸收带分别为490nm和498nm；在以罗丹明B溶液为模拟废水的光催化实验中发现：负载FeOOH/TiO₂/FeOOH/TiO₂和FeOOH/TiO₂/FeOOH的两种复合薄膜材料的光催化效果最佳；并且FeOOH膜在复合膜最外层比TiO₂膜在最外层时光解效率高。具有一定吸附能力的针铁矿薄膜与TiO₂薄膜的复合优化了复合膜内部微孔结构，促进两者间形成了积极地吸附-光催化耦合增强效应。

关键词  自组装；多层复合膜；光催化氧化；耦合增强效应

中图分类号：P578.967；P579；TQ426    文献标识码：A  doi:10.3969/j.issn.1000-6281.2017.03.003

Study on the photocatalysis coupling enhancement effect of quartz based nano TiO₂-FeOOH composite layer

XIE Yu-xing，SUN Zhen-ya^*，LI Han，ZHOU Dao-kun，YANG Hong-gang，FANGJi-min

（Wuhan University of Technology 1.School of Resources and Environmental engineering；2.Materials Research and Testing Center，Wuhan Hubei 430070，China）

Abstract  Nano TiO₂ andnano FeOOHgrow in TiCl₄-HCl systemand Fe (NO₃)₃ -HNO₃ system, respectively. Different sequence FeOOH-TiO₂ nano composite thin film optical catalytic materials with quartz glass substrate were prepared by using the self-assembly technique.. High resolution transmission electron microscopy characterization results show that the composite films arecomposed of nano anatase and goethite.The UV-Vis characterization results show that the composition of TiO₂andFeOOH makes the absorption bands of TiO₂red shifted to a certain degree, in which FeOOH/TiO₂/FeOOH/TiO₂ and FeOOH/TiO₂/FeOOH composite filmsabsorption band respectively visible range: 490nm and 498nm; The photocatalytic performance of FeOOH/TiO₂/FeOOH/TiO₂ and FeOOH/TiO2/FeOOH two kinds of photocatalyst composite films arethe best when the degradation of Rhodamine B solution，and the FeOOHfilm in the outermost layer of the composite film was higher than that of the TiO₂ film.The composition of FeOOH and TiO2 thin films optimizes the micropore structure of the composite films and promotes the formation of the coupling enhancement effect between the active adsorption and photocatalysis.

Keywords  self assembly；multilayer composite film；photocatalytic；coupling enhancement

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