Separable magnetic MoS2@Fe3O4 nanocomposites with multi-exposed active edge facets toward enhanced adsorption and catalytic activities

摘要: We synthesized fluffy MoS2 material stacked by ultrathin nanosheets through adjusting different mass ratios of starting materials via a facile hydrothermal method. Surprisingly, XRD characterization results demonstrated that the intensity ratio (100) to (002) was 0.90 with 4:5 (CH3CSNH2: Na2MoO4·2H2O) (M4-5). To best our knowledge, this value should be high, implying obtained exposed considerable facets. Because noncentrosymmetric Mo-2S on edges terminated dangling bonds exhibits rich defects, high active edge planes prevail over inert basal (002). overcome its easy suspension and difficult recovery, magnetic Fe3O4 selected for in situ doping M4-5, unique structure stable MoS2@Fe3O4 (M@F) nanocomposites-like randomly rose petals-wrapped spherical chocolate beans first time. The introduction has sacrifice some sites, but after balancing (100)/(002) M@F can also reach 0.56, showing are still multi-exposed. Abundant provide numerous centers, so nanocomposites exhibited excellent performance both 4-nitrophenol (4-NP) reduction dye adsorption. Therefore, it great application prospects wastewater treatment reaction is worth exploring other applications.