This work ultimately aims to provide a scalable, efficient, and eco-friendly photocatalyst for the environmental remediation of organic dye pollutants. A novel MoS 2 /NiMn-layered double hydroxide (LDH) nanocomposite was synthesized via a hydrothermal method and systematically investigated for its structural, morphological, optical, surface chemical, and photocatalytic properties. X-ray diffraction (XRD) analysis confirmed the successful synthesis of a crystalline MoS 2 /NiMn-LDH heterostructure, while electron microscopy revealed a hierarchical architecture consisting of MoS 2 nanoflowers anchored on NiMn-LDH platelets. UV–visible diffuse reflectance spectroscopy (UV-DRS) demonstrated improved light absorption and a decreased band gap of approximately 2.0 eV for the composite in comparison to its constituent components. X-ray photoelectron spectroscopy (XPS) demonstrated significant interfacial contacts and advantageous charge redistribution between MoS 2 and NiMn-LDH. The photocatalytic efficiency was evaluated through the degradation of Rhodamine B (RhB) dye under natural sunlight where the optimized composite (MNM4) achieved ∼92% degradation within 120 min, outperforming pristine MoS 2 and NiMn-LDH materials. This improved performance is attributed to the synergistic interaction at the heterojunction interface, facilitated by a highly efficient Z-scheme charge transfer process that promotes superior charge separation and the generation of reactive species. This study highlights the MoS 2 /NiMn-LDH composite as a promising photocatalyst for sustainable environmental remediation. • Facile hydrothermal synthesis of novel MoS 2 /NiMn-LDH nanocomposite • Hierarchical architecture with high surface area and abundant active sites • Narrowed band gap (∼2.0 eV) enhancing visible-light absorption • Optimal MoS 2 MNM4 exhibits 92% RhB degradation in 120 min under sunlight • Z-scheme mechanism promotes charge separation and reactive species generation
Anitha et al. (Thu,) studied this question.