Synthesis of ZnO Nanoparticles by <i>Bacillus subtilis</i> for Efficient Photocatalytic Degradation of Cyanide.

ABSTRACT: This study presents a sustainable and scalable biosynthesis method for zinc oxide (ZnO) nanoparticles using Bacillus subtilis, focusing on their application in photocatalytic cyanide degradation in aqueous solutions. The bacterial strain was molecularly identified through 16S rRNA gene sequencing and phylogenetic analysis. The optimized biosynthesis process yielded crystalline ZnO nanoparticles in the zincite phase with an average size of 21.87 ± 5.84 nm and a specific surface area of 27.02 ± 0.13 m²/g. Comprehensive characterization confirmed the formation of high-purity hexagonal ZnO (space group P63mc) with a bandgap of 3.20 eV. Photocatalytic tests under UV irradiation demonstrated efficient concentration-dependent cyanide degradation, achieving 75.5% removal at 100 p

SUBMITTER: Quispe Cohaila AB 

PROVIDER: S-EPMC11990931 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature