Synthesis of CdxZn1−xS@Fe3S4 magnetic photocatalyst nanoparticles for the photodegradation of methylene blue
Synthesis of CdxZn1−xS@Fe3S4 magnetic photocatalyst nanoparticles for the photodegradation of methylene blue
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DOI：
10.1016/j.jallcom.2017.11.301
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发表时间：
2018-02
影响因子：
6.2
通讯作者：
Shipeng Yang;Chunhui Zhang;Yaqi Cai;Xuwen He;Hongyun Niu
中科院分区：
文献类型：
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作者：
Shipeng Yang;Chunhui Zhang;Yaqi Cai;Xuwen He;Hongyun Niu
在本研究中，我们合成了核壳结构的磁性CdxZn1− xS@Fe3S4半导体催化剂。催化剂的CdxZn1−xS壳层具有更宽的吸收光域，并且比CdS更有效地利用光能。Fe3S4核的Fe原子掺杂到CdxZn1−xS晶格中，导致带隙减小。在所制备的催化剂中，Cd0. 2Zn0. 8S@Fe3S4纳米复合材料具有较低的禁带宽度，在模拟太阳光照射下能有效地光催化降解亚甲基蓝.在外加磁场下，CdxZn1− xS@Fe3S4催化剂可以回收并重复使用多次而不会损失催化活性。
In this study, we synthesized core-shell structured magnetic CdxZn1−xS@Fe3S4semiconductor 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 Fe3S4core dope into the CdxZn1−xS crystal lattice, which leads to a band gap decrease. Among all catalysts prepared, the Cd0.2Zn0.8S@Fe3S4nanocomposites 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@Fe3S4catalysts can be recovered and reused several times without loss of catalytic activity.