Results in Engineering (Dec 2024)
Modification in structural, optical and morphological properties of hydrothermally synthesized 2D layered structured MoS2(x)V2O5(1-x)(X=1–5%) nanocomposites for photocatalytic application
Abstract
Two-dimensional (2D) MoS2 belongs to the class of Transition Metal Dichalcogenides (TMDs), while V2O5 is categorized as a Transition Metal Oxide (TMO) both materials have demonstrated exceptional photocatalytic properties. In the present study, the hydrothermal technique was employed to synthesize with formulation strategy MoS2(x)V2O5(1-x)(X = 1–5% w/w) nanocomposites as a prominent photocatalyst under controlled exposure of UV-photons of light for deterioration of industrial wastage in water. The V2O5 nanoparticles were effectively embellished on the surface of two-dimensional molybdenum nano-layered matrix. The crystal phase and morphology such as nanospheres and layered structures of pure V2O5 and MoS2-doped-V2O5 nanocomposites were verified by the X-ray diffraction (XRD) and scanning electron microscopy (SEM) respectively. In UV–Vis spectroscopy findings, the energy bandgap (Eg) is decreasing pattern from 2.76 to 0.85eV with increment of substitution percentages. The decremented energy bandgap of V2O5/MoS2 is revealed to be the cause of the observed additional gamma active states and contributed to the development of conduction and valence bands. The optical conductivity increased from 3.6 to 14.5 Ω−1cm−1 in the UV visible spectrum, while the energy bandgap decreased from 2.76 to 1.25 eV. In the UV–Vis spectrum absorption peak of prepared nanocomposites exhibits an increase in absorbance from 6.5(a.u.) to 14.5 (a.u.) at wavelength 310 nm. Photoluminescence (PL) investigations reveal that when the doping percentage increases, the intensity of the peaks decreases as signifies a lower rate of electron-hole pair recombination, hence increasing the separation capacity. This separation capacity demonstrates well-organized charge transfer on the enhanced photocatalyst surface area and provides better dye degradation activity. A BET detail analysis included Saito-Foley pore size distribution (SF-PSD), BJH (adsorption) pore area, volume & pore size, and textural properties of MoS2(x)V2O5(1-x)(X = 1–5% w/w) photocatalyst can be applied as a cost-effective, environmentally friendly, long-lasting, and effective photocatalyst for the photocatalytic degradation of organic pollutants. The degradation of methylene blue (M.B) within 150 min established that the synthesized MoS2(x)V2O5(1-x)(X = 1–5% w/w) material was shown to be an economically inexpensive and stable nanocomposites for photocatalytic activity.
