Highly Degradation of Methylene Blue and Crystal Violet Dyes with Green Hydrothermal Synthesis of Hierarchical MoS₂ Nanoflowers under Solar Light

Molybdenum sulfide (MoS₂) is the one of the most desirable material, resembling layered graphite, among the other semiconductors because of its chemical, electrical and optical properties that lead to potential applications such as photo catalysis, electrocatalysis and opto-electronics, etc. Here, we report the simple and green hydrothermal synthesis of MoS₂ Nanoflowers (NFs) from ammonium molybdenum hydrate and thiourea without using any acids and bases. The resultant MoS₂ NFs have good crystallinity with lattice spacing of 0.61 nm. The optical bandgap of synthesized MoS₂ NFs is found to be 1.55 eV. Then, we evaluated the photocatalytic degradation of methylene blue (MB) and crystal violet (CV) dyes with MoS₂ NFs under dark as well as solar light irradiation. The MoS₂ NFs showed excellent photocatalytic activity toward the degradation of MB and CV with almost 100 % degradation within 5 and 7 mins with vigorous magnetic stirring. In addition to this, Mos₂ NFs displayed excellent repeatability.