ArticleScientific reports2025
Biogenic synthesis of PbS nanoparticles by Micrococcus luteus and their application in high-performance photodetectors.
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
This study reports the successful extracellular biosynthesis of lead sulfide (PbS) nanoparticles using non-motile, Gram-variable Micrococcus luteus bacteria. Optimization studies revealed optimal growth conditions for bacterial biomass and PbS production at room temperature, pH 7, and 96 h of incubation. The influence of precursor concentration on the growth and properties of PbS nanostructures was investigated. Characterization techniques, including X-ray diffraction, scanning electron microscopy, and FTIR spectroscopy, confirmed the formation of spherical, pure-phase PbS nanoparticles with sizes ranging from 150 to 250 nm. UV-visible absorption spectroscopy demonstrated strong absorption in the near-infrared region, indicative of the bandgap of PbS. Furthermore, an increase in precursor concentration resulted in a blue shift of the band gap. Utilizing these biogenic PbS nanoparticles, a high-performance photodetector device was fabricated with the architecture FTO/TiO
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