ZnO nanoparticles, as fabricated using Ocimum tenuiflorum leaf extract, have been investigated for their photocatalytic and antimicrobial activities. However, the ZnO nanoparticles were synthesized using precursor, Zn(CH₃COO)₂·2H₂O at different concentrations (5, 10 and 50 mmol kg⁻¹) at 70 °C and pH 11.5. The synthesized materials were characterized by employing Fourier transform infrared spectroscopy, UV–Visible, X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and transmission electron microscopy techniques. As recorded from UV–Visible studies, there was a drastic decrease in the energy band gap value (E_g) from 3.63 to 3.20 eV with the concentration of precursor, Zn(CH₃COO)₂·2H₂O. The synthesized materials were examined for their photocatalytic activity towards the degradation of methyl orange dye and also for antibacterial action against Bacillus subtilis, Staphylococcus aureus and Escherichia coli pathogenic bacteria.

中文翻译：

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Tenciflorum叶提取物作为绿色介质，用于灭活细菌病原体的ZnO纳米胶囊的合成

使用Tenciflorum叶提取物制备的ZnO纳米粒子具有光催化和抗菌活性。但是，ZnO纳米颗粒是使用前体Zn（CH ₃ COO）₂ ·2H ₂ O在70°C和pH 11.5下以不同的浓度（5、10和50 mmol kg ^-1）合成的。合成材料的特征在于采用傅立叶变换红外光谱，紫外可见光，X射线衍射，扫描电子显微镜，能量色散X射线光谱和透射电子显微镜技术。根据紫外可见研究的记录，能带隙值（E _g）浓度从前者Zn（CH ₃ COO）₂ ·2H ₂ O的3.63到3.20 eV 。合成的材料对甲基橙染料的降解具有光催化活性，并对枯草芽孢杆菌，葡萄球菌有抗菌作用。金黄色和大肠杆菌的致病菌。