Exfoliation and restacking of MoS₂nanoplatelets in Co²⁺solution

MoS2 Nanoflower-Derived Interconnected CoMoO4 Nanoarchitectures as a Stable and High Rate Performing Anode for Lithium-Ion Battery Applications

“…41 Formation of metal sulfate and hydroxides can be explained as follows: due to the acidic nature of the solution, sulfide (S 2− ) ions (from MoS 2 ) are converted to sulfate ions (SO 4 2− ). 40 This can also lead to the formation of the CoSO 4 through ligand exchange and in a similar way, Co(OH) 2 can be formed from the cobalt ions in aqueous medium. Also, the strong electrostatic interaction and small size of Co 2+ ions induce the restacking of MoS 2 layers by reducing the distance between the layers.…”

“…Similarly, a strong band at 3600 cm –1 related to the presence of the −OH group probably because of the metal hydroxide . Formation of metal sulfate and hydroxides can be explained as follows: due to the acidic nature of the solution, sulfide (S 2– ) ions (from MoS 2 ) are converted to sulfate ions (SO 4 2– ) . This can also lead to the formation of the CoSO 4 through ligand exchange and in a similar way, Co­(OH) 2 can be formed from the cobalt ions in aqueous medium.…”

“…The elemental mapping analysis in Figure S4e shows that the Co precursors were uniformly adsorbed onto the petals of MoS 2 flowers. The powder XRD analysis (Figure S5a) of the Co-adsorbed MoS 2 composite mainly shows the formation of the amorphous product of nonstoichiometric Mo x S y and Co 0.5 MoS 2 /CoMo 2 S 4 (JCPDS card no: 00-024-0332). Further, the Fourier transform infrared spectra of Co-dispersed MoS 2 (Figure S5b) shows a strong doublet band between 1050 and 1150 cm –1 which is characteristic of metal sulfates.…”

“…Also, the strong electrostatic interaction and small size of Co 2+ ions induce the restacking of MoS 2 layers by reducing the distance between the layers. The formation of Co 2+ inserted nano-MoS 2 (Co 2+ /nano MoS 2 ) can be described as follows …”