期刊
SOLID STATE SCIENCES
卷 52, 期 -, 页码 42-48出版社
ELSEVIER
DOI: 10.1016/j.solidstatesciences.2015.12.006
关键词
Fe3O4/Ag/TiO2; Photocatalysis; Composite mircospheres; Recombination
资金
- National Science Foundation of China (NSFC) [21271136]
- Provincial Natural Science Foundation of Anhui [1508085ME104, 1408085QA20, 1408085MB40]
- Scientific Research Foundation for the Anhui Provincial Returned Overseas Chinese Scholars
- Key Program of Anhui Provincial Education Department [KJ2015A250, KJ2015A210]
- Key Program of Outstanding Youth Talents in Higher Education Institution [GXYQZD2016343]
- Program of Innovative Research Team of Anhui Provincial Education Department (Photoelectric information material and new energy device)
- Program of Innovative Research Team of Suzhou University [2013kytd02]
- Scientific Research Foundation of Suzhou University [2014XQNRL012]
- National undergraduate Training Programs for Innovation and Entrepreneurship [201310379001]
The novel three-component Fe3O4/TiO2/Ag composite mircospheres were prepared via a facile chemical deposition route. The Fe3O4/TiO2 mircospheres were first prepared by the solvothermal method, and then Ag nanoparticles were anchored onto the out-layer of TiO2 by the tyrosine-reduced method. The as-prepared magnetic Fe3O4/TiO2/Ag composite mircospheres were applied as photocatalysis for the photocatalytic degradation of methylene blue. The results indicate that the photocatalytic activity of Fe3O4/TiO2/Ag composite microspheres is superior to that of Fe3O4/TiO2 due to the dual effects of the enhanced light absorption and reduction of photoelectronehole pair recombination in TiO2 with the introduction of Ag NPs. Moreover, these magnetic Fe3O4/TiO2/Ag composite microspheres can be completely removed from the dispersion with the help of magnetic separation and reused with little or no loss of catalytic activity. (C) 2015 Elsevier Masson SAS. All rights reserved.
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