{"title":"Advancements in biogenic synthesis of zinc oxide nanoparticles for superior water decontamination and antibacterial efficacy","authors":"Richa Sharma, Rahul Sharma, Sakshi Dhiman, Abhishek Kandwal, Manjula Sharma, Asha Kumari","doi":"10.1007/s11581-024-05695-y","DOIUrl":null,"url":null,"abstract":"<p>An urgent problem is the bacterial infestations caused by home and industrial wastes that contaminate surface water. This article presents a sustainable and affordable method for synthesizing zinc oxide nanoparticles (ZnO NPs) utilizing <i>Asparagus racemosus</i> root extract. X-ray diffraction, Fourier transform infrared spectroscopy, and UV–visible spectrum analysis were used to characterize the synthesized ZnO nanoparticles. The X-ray diffraction peaks of ZnO NPs matched to a standard JCPDS card (no. 36–1451) and the particles were 21–29 nm in size and had a wurtzite structure with good crystallinity. UV–Vis spectroscopy showed absorption peaks between 359 and 364 nm in ZnO NPs synthesized from <i>Asparagus racemosus</i> root extract. ZnO NPs were confirmed by FTIR, which revealed absorption bands in the 469–525 cm<sup>−1</sup> region, showing stretching of the Zn–O bond. In this study, methylene blue (MB) was degraded using ZnO nanoparticles as photocatalysts under the influence of UV light. Notably, the maximum MB decomposition efficiency of 98% was demonstrated by ZnO for 100 mg/mL with reaction rate constants of 0.0312, 0.02104, and 0.001362 min<sup>−1</sup> for ASP<sub>1</sub>, ASP<sub>2</sub>, and ASP<sub>3</sub>, respectively. Additionally, the well diffusion technique was used to assess the zone of inhibition, minimum inhibitory concentration (MIC), and minimum bactericidal concentration (MBC) of ZnO nanoparticles against clinical strains of <i>Escherichia coli</i> and <i>Staphylococcus aureus</i>. ZnO-NPs were more effective against <i>E. coli</i> and <i>S. aureus</i> which exhibited inhibition zones of 13 ± 0.57 and 15 ± 1.15 mm, respectively. These results emphasize the important potential of ZnO nanoparticles produced from biological sources for effective water purification, emphasizing their photocatalytic and antibacterial capabilities.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\n","PeriodicalId":599,"journal":{"name":"Ionics","volume":null,"pages":null},"PeriodicalIF":2.4000,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ionics","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1007/s11581-024-05695-y","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
An urgent problem is the bacterial infestations caused by home and industrial wastes that contaminate surface water. This article presents a sustainable and affordable method for synthesizing zinc oxide nanoparticles (ZnO NPs) utilizing Asparagus racemosus root extract. X-ray diffraction, Fourier transform infrared spectroscopy, and UV–visible spectrum analysis were used to characterize the synthesized ZnO nanoparticles. The X-ray diffraction peaks of ZnO NPs matched to a standard JCPDS card (no. 36–1451) and the particles were 21–29 nm in size and had a wurtzite structure with good crystallinity. UV–Vis spectroscopy showed absorption peaks between 359 and 364 nm in ZnO NPs synthesized from Asparagus racemosus root extract. ZnO NPs were confirmed by FTIR, which revealed absorption bands in the 469–525 cm−1 region, showing stretching of the Zn–O bond. In this study, methylene blue (MB) was degraded using ZnO nanoparticles as photocatalysts under the influence of UV light. Notably, the maximum MB decomposition efficiency of 98% was demonstrated by ZnO for 100 mg/mL with reaction rate constants of 0.0312, 0.02104, and 0.001362 min−1 for ASP1, ASP2, and ASP3, respectively. Additionally, the well diffusion technique was used to assess the zone of inhibition, minimum inhibitory concentration (MIC), and minimum bactericidal concentration (MBC) of ZnO nanoparticles against clinical strains of Escherichia coli and Staphylococcus aureus. ZnO-NPs were more effective against E. coli and S. aureus which exhibited inhibition zones of 13 ± 0.57 and 15 ± 1.15 mm, respectively. These results emphasize the important potential of ZnO nanoparticles produced from biological sources for effective water purification, emphasizing their photocatalytic and antibacterial capabilities.
期刊介绍:
Ionics is publishing original results in the fields of science and technology of ionic motion. This includes theoretical, experimental and practical work on electrolytes, electrode, ionic/electronic interfaces, ionic transport aspects of corrosion, galvanic cells, e.g. for thermodynamic and kinetic studies, batteries, fuel cells, sensors and electrochromics. Fast solid ionic conductors are presently providing new opportunities in view of several advantages, in addition to conventional liquid electrolytes.