Highly Efficient Visible-Light-Induced Photocatalytic Production of Hydrogen for Magnetically Retrievable Fe3O4@SiO2@MoS2/g-C3N4 Hierarchical Microspheres

Abstract

A new multifunctional compound containing hierarchical microspheres of Fe3O4@SiO2@MoS2/g-C3N4 (FSMG) was created. The microspheres comprised Fe3O4@SiO2 as a magnetic component and a heterostructure of MoS2/g-C3N4 as an outer shell, and both elements are compounded by an effective and applicable method and can be used in photocatalytic applications. Highly efficient separation of the photodriven pairs of electron/hole pairs (e–/h+) was exhibited with the as-synthesized FSMG structures under visible light. The photocatalytic activities of Fe3O4@SiO2@MoS2, g-C3N4, and FSMG are assessed by surveying the hydrogen (H2) production and rhodamine B (RhB) photodegradation from water. These contrasting studies show that microspheres of FSMG show promising visible-light-induced photocatalytic activity and exhibit 1.99-fold and 3.38-fold increased activity over that of Fe3O4@SiO2@MoS2 and g-C3N4 mechanisms, respectively, in RhB degradation and a 4.13-fold and 11.09-fold increase in H2 production from water, respective...