Tunable Synthesis of Core-shell α-Fe2O3/TiO2 Composite Nanoparticles and Their Visible-light Photocatalytic Activity

doi:10.1007/s40242-016-6252-x

高等学校化学研究 ›› 2016, Vol. 32 ›› Issue (6): 882-888.doi: 10.1007/s40242-016-6252-x

Tunable Synthesis of Core-shell α-Fe₂O₃/TiO₂ Composite Nanoparticles and Their Visible-light Photocatalytic Activity

SUN Dandan, CAO Yanyan, XU Yanyan, ZHANG Guoying, SUN Yaqiu

Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-organic Hybrid Functional Material Chemistry, Ministry of Education, College of Chemistry, Tianjin Normal University, Tianjin 300387, P. R. China

收稿日期:2016-06-17 修回日期:2016-08-04 出版日期:2016-12-01 发布日期:2016-11-21
通讯作者: XU Yanyan, E-mail:hxxyxyy@mail.tjnu.edu.cn E-mail:hxxyxyy@mail.tjnu.edu.cn
基金资助:
Supported by the National Natural Science Foundation of China(Nos.21001081, 21303122), the High School Science & Technology Fund Planning Project of Tianjin City, China(No.20110510) and the Program for Innovative Research Team in Universities of Tianjin, China(No.TD12-5038).

Tunable Synthesis of Core-shell α-Fe₂O₃/TiO₂ Composite Nanoparticles and Their Visible-light Photocatalytic Activity

SUN Dandan, CAO Yanyan, XU Yanyan, ZHANG Guoying, SUN Yaqiu

Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-organic Hybrid Functional Material Chemistry, Ministry of Education, College of Chemistry, Tianjin Normal University, Tianjin 300387, P. R. China

Received:2016-06-17 Revised:2016-08-04 Online:2016-12-01 Published:2016-11-21
Contact: XU Yanyan, E-mail:hxxyxyy@mail.tjnu.edu.cn E-mail:hxxyxyy@mail.tjnu.edu.cn
Supported by:
Supported by the National Natural Science Foundation of China(Nos.21001081, 21303122), the High School Science & Technology Fund Planning Project of Tianjin City, China(No.20110510) and the Program for Innovative Research Team in Universities of Tianjin, China(No.TD12-5038).

摘要/Abstract

摘要：

Uniform α-Fe₂O₃/amorphous TiO₂ core-shell nanocomposites were prepared via a hydrolysis method and α-Fe₂O₃/anatase TiO₂ core-shell nanocomposites were obtained via a post-calcination process. The structure and morphology of the products were characterized by powder X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy and scanning electron microscopy. Amorphous TiO₂ nanoparticles with diameters of ten to several tens nanometer were formed on the surface of α-Fe₂O₃ nanoparticles and the coverage density of the secondary TiO₂ nanoparticles in the composite can be controlled by varying the concentration of Ti(BuO)₄ in the ethanol solution. The visible-light photocatalytic properties of different products towards Rhodamine B(RhB) were investigated. The results show that the α-Fe₂O₃/amorphous TiO₂ exhibits a good photocatalytic property owing to the extension of the light response range to visible light and the efficient separation of photogenerated electrons and holes between α-Fe₂O₃ and amorphous TiO₂.

关键词: α-Fe₂O₃/TiO₂, Core-shell nanostructure, Photocatalytic activity, Rhodamine B

Abstract:

Key words: α-Fe₂O₃/TiO₂, Core-shell nanostructure, Photocatalytic activity, Rhodamine B

SUN Dandan, CAO Yanyan, XU Yanyan, ZHANG Guoying, SUN Yaqiu. Tunable Synthesis of Core-shell α-Fe₂O₃/TiO₂ Composite Nanoparticles and Their Visible-light Photocatalytic Activity[J]. 高等学校化学研究, 2016, 32(6): 882-888.

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Tunable Synthesis of Core-shell α-Fe₂O₃/TiO₂ Composite Nanoparticles and Their Visible-light Photocatalytic Activity

Tunable Synthesis of Core-shell α-Fe₂O₃/TiO₂ Composite Nanoparticles and Their Visible-light Photocatalytic Activity

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