【摘要】 本文将单分散且尺寸可控的ZnFe₂O₄磁性纳米颗粒均匀分散于二维SnS₂纳米片；构建ZnFe₂O₄/SnS₂二元异质结。TEM结果显示，该方法制备的ZnFe₂O₄磁性纳米颗粒尺寸较小，分布均匀，且颗粒没有发生团聚现象，平均尺寸为14 nm,在异质结复合材料中，ZnFe₂O₄纳米颗粒分散性良好，均匀地负载在SnS₂的表面；ZnFe₂O₄纳米颗粒的饱和磁化强度M_S=71.20 emu/g,矫顽力H_C=1.94 Oe;异质结样品的饱和磁化强度M_S=13.60 emu/g。同时发现，将ZnFe₂O₄磁性纳米颗粒应用于光催化领域，可以提高异质结的光催化性能，相比纯SnS₂而言，ZnFe₂O₄/SnS₂异质结的光催化降解的速率提高了1.8倍，在3 h内可以有效的降解87.5%的RhB水溶液；而且该催化剂的磁性还可以增强光催化剂的重复利用率，这对催化和能源领域具有重要的研究价值。更多还原

【Abstract】 In this paper, monodisperse and size controllable ZnFe₂O₄ magnetic nanoparticles were uniformly dispersed on two-dimensional SnS₂ nanosheets.The ZnFe₂O₄/SnS₂ binary heterojunction was constructed by polyhydroxyl method. TEM results show that the size of ZnFe₂O₄ magnetic nanoparticles is small and evenly distributed, and the particles do not agglomerate, and the average size of ZnFe₂O₄ is 14 nm. In the heterostructure composites, ZnFe₂O₄ nanoparticles had good dispersion and were uniformly loaded on the surface of SnS₂.The saturation magnetization of ZnFe₂O₄ nanoparticles was M_S=71.20 emu/g and coercivity H_C=1.94 Oe. The saturation magnetization of the heterojunction sample was M_S=13.60 emu/g. It is also found that the application of ZnFe₂O₄ magnetic nanoparticles in the field of photocatalysis can improve the photocatalytic performance of heterostructures. Compared with pure SnS₂, the photocatalytic degradation rate of ZnFe₂O₄/SnS₂ heterostructures is 1.8 times higher, and 87.5% RhB aqueous solution can be effectively degraded within 3 h. Moreover, the magnetic properties of the catalyst can also enhance the photocatalyst reuse rate, which has important research value in the fields of catalysis and energy.更多还原