期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 735, 期 -, 页码 1955-1961出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2017.11.301
关键词
Semiconductor catalyst; Photocatalyst; Photodegradation; Core-shell structure; Magnetic separation
资金
- National Basic Research Program of China [2015CB932003]
- National Natural Science Foundation of China [21537004, 21477140, 21621064]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB14010201]
In this study, we synthesized core-shell structured magnetic CdxZn1-xS@Fe3S4 semiconductor catalysts. The CdxZn1-xS shell of the catalysts possesses a wider absorption optical domain and uses light energy more efficiently than CdS. The Fe atoms of the Fe3S4 core dope into the CdxZn1-xS crystal lattice, which leads to a band gap decrease. Among all catalysts prepared, the Cd0.2Zn0.8S@Fe3S4 nanocomposites bear low band gap properties and can efficiently photocatalyze the degradation of methylene blue under the irradiation of simulated sunlight. Under an external magnetic field, the CdxZn1-xS@Fe3S4 catalysts can be recovered and reused several times without loss of catalytic activity. (C) 2017 Elsevier B.V. All rights reserved.
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