Green Synthesis of Zinc Oxide Nanoparticles Using Aqueous Extracts of <i>Hibiscus cannabinus</i> L.: Wastewater Purification and Antibacterial Activity
The green preparation of metal oxide nanoparticles is an environmentally friendly method, which could reduce the use of toxic solvents and their impact on the environment. The purpose of this study is to investigate the green synthesis of zinc oxide (ZnO) nanoparticles using extracts of <i>Hib...
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MDPI AG
2023-08-01
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| Online Access: | https://www.mdpi.com/2297-8739/10/9/466 |
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| author | Xitao Yang Xuan Cao Chenxiao Chen Liping Liao Sitian Yuan Siqi Huang |
| author_facet | Xitao Yang Xuan Cao Chenxiao Chen Liping Liao Sitian Yuan Siqi Huang |
| author_sort | Xitao Yang |
| collection | DOAJ |
| description | The green preparation of metal oxide nanoparticles is an environmentally friendly method, which could reduce the use of toxic solvents and their impact on the environment. The purpose of this study is to investigate the green synthesis of zinc oxide (ZnO) nanoparticles using extracts of <i>Hibiscus cannabinus</i> leaves and to evaluate their potential applications in environmental remediation. In this work, ZnO nanoparticles were successfully prepared and thoroughly characterized using UV–vis, Fourier transform infrared analysis (FTIR), X-ray diffraction (XRD), transmission electron microscope (TEM) analysis, and scanning electron microscope (SEM) with energy dispersive x-ray analysis (EDAX). As a result, the synthesized ZnO nanoparticles showed a good adsorption capacity for Congo red (CR), and satisfactory antioxidant and antibacterial activities. They exhibited good adsorption and removal abilities for CR in aqueous solutions. With the conditions optimized, the adsorption kinetics and isotherms were fitted to the pseudo-second-order model and the Langmuir model. The ZnO nanoparticles could also effectively scavenge 2-2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2′-azino-di(3-ethylbenzthiazoline sulphonate) (ABTS) radicals, and appeared to inhibit the growth of <i>Escherichia coli</i> and <i>Staphylococcus aureus</i> bacteria. Based on the identified adsorption capacity, the green synthesized ZnO nanoparticles demonstrated their potential to be used in the removal of dyeing wastewater and in the further purification of water due to their antioxidant activity and antibacterial activity. |
| first_indexed | 2024-03-10T22:01:40Z |
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| id | doaj.art-af1bc95863cc498a9ccf6e0bff3b78c7 |
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| issn | 2297-8739 |
| language | English |
| last_indexed | 2024-03-10T22:01:40Z |
| publishDate | 2023-08-01 |
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| spelling | doaj.art-af1bc95863cc498a9ccf6e0bff3b78c72023-11-19T12:57:33ZengMDPI AGSeparations2297-87392023-08-0110946610.3390/separations10090466Green Synthesis of Zinc Oxide Nanoparticles Using Aqueous Extracts of <i>Hibiscus cannabinus</i> L.: Wastewater Purification and Antibacterial ActivityXitao Yang0Xuan Cao1Chenxiao Chen2Liping Liao3Sitian Yuan4Siqi Huang5Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, ChinaCollege of Life Sciences, Shangrao Normal University, Shangrao 334001, ChinaInstitute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, ChinaInstitute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, ChinaInstitute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, ChinaInstitute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, ChinaThe green preparation of metal oxide nanoparticles is an environmentally friendly method, which could reduce the use of toxic solvents and their impact on the environment. The purpose of this study is to investigate the green synthesis of zinc oxide (ZnO) nanoparticles using extracts of <i>Hibiscus cannabinus</i> leaves and to evaluate their potential applications in environmental remediation. In this work, ZnO nanoparticles were successfully prepared and thoroughly characterized using UV–vis, Fourier transform infrared analysis (FTIR), X-ray diffraction (XRD), transmission electron microscope (TEM) analysis, and scanning electron microscope (SEM) with energy dispersive x-ray analysis (EDAX). As a result, the synthesized ZnO nanoparticles showed a good adsorption capacity for Congo red (CR), and satisfactory antioxidant and antibacterial activities. They exhibited good adsorption and removal abilities for CR in aqueous solutions. With the conditions optimized, the adsorption kinetics and isotherms were fitted to the pseudo-second-order model and the Langmuir model. The ZnO nanoparticles could also effectively scavenge 2-2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2′-azino-di(3-ethylbenzthiazoline sulphonate) (ABTS) radicals, and appeared to inhibit the growth of <i>Escherichia coli</i> and <i>Staphylococcus aureus</i> bacteria. Based on the identified adsorption capacity, the green synthesized ZnO nanoparticles demonstrated their potential to be used in the removal of dyeing wastewater and in the further purification of water due to their antioxidant activity and antibacterial activity.https://www.mdpi.com/2297-8739/10/9/466adsorptionantibacterialantioxidantCongo red<i>Hibiscus cannabinus</i> L.zinc oxide |
| spellingShingle | Xitao Yang Xuan Cao Chenxiao Chen Liping Liao Sitian Yuan Siqi Huang Green Synthesis of Zinc Oxide Nanoparticles Using Aqueous Extracts of <i>Hibiscus cannabinus</i> L.: Wastewater Purification and Antibacterial Activity Separations adsorption antibacterial antioxidant Congo red <i>Hibiscus cannabinus</i> L. zinc oxide |
| title | Green Synthesis of Zinc Oxide Nanoparticles Using Aqueous Extracts of <i>Hibiscus cannabinus</i> L.: Wastewater Purification and Antibacterial Activity |
| title_full | Green Synthesis of Zinc Oxide Nanoparticles Using Aqueous Extracts of <i>Hibiscus cannabinus</i> L.: Wastewater Purification and Antibacterial Activity |
| title_fullStr | Green Synthesis of Zinc Oxide Nanoparticles Using Aqueous Extracts of <i>Hibiscus cannabinus</i> L.: Wastewater Purification and Antibacterial Activity |
| title_full_unstemmed | Green Synthesis of Zinc Oxide Nanoparticles Using Aqueous Extracts of <i>Hibiscus cannabinus</i> L.: Wastewater Purification and Antibacterial Activity |
| title_short | Green Synthesis of Zinc Oxide Nanoparticles Using Aqueous Extracts of <i>Hibiscus cannabinus</i> L.: Wastewater Purification and Antibacterial Activity |
| title_sort | green synthesis of zinc oxide nanoparticles using aqueous extracts of i hibiscus cannabinus i l wastewater purification and antibacterial activity |
| topic | adsorption antibacterial antioxidant Congo red <i>Hibiscus cannabinus</i> L. zinc oxide |
| url | https://www.mdpi.com/2297-8739/10/9/466 |
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