Abstract

Green synthesis of bimetallic oxide nanocomposite with leaf extract of Eichhornia crassipes (1) is attracted much in recent researchers. The as-synthesized CuO/Ag₂O/Ext (2) and CuO/Ag₂O NCPs (3) were characterized by UV-Vis, FT-IR, SEM, XRD, and TGA. The disc diffusion method was used to assess the antibacterial potential of (1), (2), and (3) against a total of four human pathogens bacteria. S. aureus and S. epidermides were the growth inhibitory effect in the range of 6.3 ± 0.33 mm, 26 ± 0.58 to 30 ± 0.58 mm, and 23 ± 0.15 to 30 ± 0.58 mm and 6.7 ± 0.33 mm, 22.3 ± 0.88 to 26.3 ± 0.88 mm, and 26 ± 0.58 to 28 ± 0.58 mm for (1), (2), and (3), respectively. Whereas, E. coli and K. pneumonia showed in the range of 7.00 mm, 26.7 ± 0.88 to 29.3 ± 0.33 mm, and 22.7 ± 0.88 to 27.3 ± 0.88 mm and 6.3 ± 0.33 mm, 25 ± 0.88 to 27.3 ± 0.33 mm, and 25.7 ± 0.33 to 27 ± 0.58 mm for (1), (2), and (3), respectively. The XRD technique confirmed the nano-size structure of (2) and (3) (D = 33.41 nm and 28.22 nm, respectively).

摘要

利用凤眼莲叶提取物绿色合成双金属氧化物纳米复合材料( 1 )引起了近年来研究者的广泛关注。通过 UV-Vis、FT-IR、SEM、XRD 和 TGA对合成的 CuO/Ag ₂ O/Ext ( 2 ) 和 CuO/Ag ₂ O NCPs ( 3 ) 进行了表征。使用纸片扩散法评估( 1 )、( 2 )和( 3 )针对总共四种人类病原体细菌的抗菌潜力。金黄色葡萄球菌和表皮葡萄球菌分别为6.3±0.33mm、26±0.58～30±0.58mm、23±0.15～30±0.58mm、6.7±0.33mm、22.3±0.88～26.3±0.88mm、26±0.88mm的生长抑制效果。 ( 1 )、( 2 )和( 3 )分别为0.58至28±0.58mm 。鉴于大肠杆菌和肺炎克雷伯氏菌显示的范围为 7.00 mm、26.7 ± 0.88 至 29.3 ± 0.33 mm、22.7 ± 0.88 至 27.3 ± 0.88 mm 和 6.3 ± 0.33 mm、25 ± 0.88 至 27.3 ± 0.33 mm， ( 1 )、( 2 )和( 3 )分别为25.7±0.33至27±0.58mm 。XRD技术证实了( 2 )和( 3 )的纳米尺寸结构( D = 33.41 nm 和 28.22 nm，分别）。