Semiconductor NbSe ₂ nanoparticles synthesized at various temperatures: a novel promising antifungal candidate with <i>in vitro</i> wound healing potential

This study reports the synthesis of niobium diselenide (NbSe₂) nanoparticles at room temperature (RT), 70 °C, and 100 °C <i>via</i> a sonochemical method, followed by an assessment of their structural, morphological, antimicrobial, cytotoxic, and wound healing properties. X-ray diffraction, scanning electron microscopy, and transmission electron microscopy analyses revealed changes in the crystallinity, size, and morphology of the nanoparticles as a function of synthesis temperature. The sample synthesized at 70 °C exhibited the highest cytotoxicity against HaCaT cells, while those synthesized at RT and 100 °C showed moderate and low cytotoxicity, respectively. Antimicrobial properties varied: the RT nanoparticles showed the highest inhibition against <i>Aspergillus niger</i>, while the 100 °C nanoparticles demonstrated some inhibition against <i>Candida albicans</i>. Wound healing assays revealed that the RT synthesized nanoparticles promoted the highest wound closure (94.78%) at a concentration of 0.5 μg mL^-1. These results highlight the influence of synthesis temperature on the biological properties of NbSe₂ nanoparticles, suggesting their potential for therapeutic applications in regenerative medicine, with the RT sample showing the most promising outcomes.