Synthesis of ZnO Nanoparticles by Bacillus subtilis for Efficient Photocatalytic Degradation of Cyanide DOI Creative Commons
Alberto Bacilio Quispe Cohaila, Gabriela de Lourdes Fora Quispe, Wilson Orlando Lanchipa Ramos

et al.

Nanomaterials, Journal Year: 2025, Volume and Issue: 15(7), P. 501 - 501

Published: March 26, 2025

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 aqueous solutions. The bacterial strain was molecularly identified through 16S rRNA gene sequencing phylogenetic analysis. optimized process yielded crystalline ZnO the zincite phase with an average size of 21.87 ± 5.84 nm specific surface area 27.02 0.13 m2/g. Comprehensive characterization confirmed formation high-purity hexagonal (space group P63mc) bandgap 3.20 eV. Photocatalytic tests under UV irradiation demonstrated efficient concentration-dependent degradation, achieving 75.5% removal at 100 ppm 65.8% 500 within 180 min 1.0 g/L loading. kinetics followed pseudo-first-order model rate constants ranging from 6.64 × 10−3 to 3.98 min−1. enhanced performance is attributed optimal crystallite size, high area, defects microscopic These results establish biosynthesized as promising eco-friendly photocatalysts industrial wastewater treatment.

Language: Английский

Synthesis of ZnO Nanoparticles by Bacillus subtilis for Efficient Photocatalytic Degradation of Cyanide DOI Creative Commons
Alberto Bacilio Quispe Cohaila, Gabriela de Lourdes Fora Quispe, Wilson Orlando Lanchipa Ramos

et al.

Nanomaterials, Journal Year: 2025, Volume and Issue: 15(7), P. 501 - 501

Published: March 26, 2025

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 aqueous solutions. The bacterial strain was molecularly identified through 16S rRNA gene sequencing phylogenetic analysis. optimized process yielded crystalline ZnO the zincite phase with an average size of 21.87 ± 5.84 nm specific surface area 27.02 0.13 m2/g. Comprehensive characterization confirmed formation high-purity hexagonal (space group P63mc) bandgap 3.20 eV. Photocatalytic tests under UV irradiation demonstrated efficient concentration-dependent degradation, achieving 75.5% removal at 100 ppm 65.8% 500 within 180 min 1.0 g/L loading. kinetics followed pseudo-first-order model rate constants ranging from 6.64 × 10−3 to 3.98 min−1. enhanced performance is attributed optimal crystallite size, high area, defects microscopic These results establish biosynthesized as promising eco-friendly photocatalysts industrial wastewater treatment.

Language: Английский

Citations

0