Exploring Photocatalytic, Antimicrobial and Antioxidant Efficacy of Green-Synthesized Zinc Oxide Nanoparticles
<i data-eusoft-scrollable-element="1">Aloe vera</i> is effectively utilized to synthesize zinc oxide nanoparticles (Av-ZnO NPs), providing an alternative to traditional chemical and physical methods. This sustainable approach minimizes the environmental impacts and enhances the...
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2025-06-01
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| author | Sabina Shrestha Laxmi Tiwari Sujan Dhungana Jasana Maharjan Devendra Khadka Allison A. Kim Megh Raj Pokhrel Janaki Baral Mira Park Bhoj Raj Poudel |
| author_facet | Sabina Shrestha Laxmi Tiwari Sujan Dhungana Jasana Maharjan Devendra Khadka Allison A. Kim Megh Raj Pokhrel Janaki Baral Mira Park Bhoj Raj Poudel |
| author_sort | Sabina Shrestha |
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| description | <i data-eusoft-scrollable-element="1">Aloe vera</i> is effectively utilized to synthesize zinc oxide nanoparticles (Av-ZnO NPs), providing an alternative to traditional chemical and physical methods. This sustainable approach minimizes the environmental impacts and enhances their compatibility with herbal ecosystems. We comprehensively analyzed the optical, structural, morphological, and catalytic properties of Av-ZnO NPs using various analytical methods. The results indicated that the nanoparticles primarily exhibited a spherical shape. X-ray diffraction (XRD) revealed the successful formation of a highly crystalline hexagonal wurtzite structure, with an average size estimated at 12.2 nm. The antimicrobial properties of the Av-ZnO NPs indicated moderate antibacterial effectiveness. Using the DPPH free radical scavenging method, we evaluated the antioxidant properties, where the Av-ZnO NPs exhibited improved the radical scavenging efficiency, reflected by a lower IC<sub data-eusoft-scrollable-element="1">50</sub> value compared to the plant extract. Additionally, we assessed the photocatalytic functionality through the degradation of methylene blue (MB) dye, finding that the Av-ZnO NPs achieved approximately 82.43% degradation in 210 min, demonstrating their potential for environmental remediation. These findings suggest that green-synthesized ZnO NPs could play a noteworthy role in various nanotechnology applications and biomedical fields, while also promoting environmental sustainability. |
| format | Article |
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| institution | DOAJ |
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| language | English |
| publishDate | 2025-06-01 |
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| series | Nanomaterials |
| spelling | doaj-art-67c4ffb4bd3945ccbd69836e475377082025-08-20T03:11:32ZengMDPI AGNanomaterials2079-49912025-06-01151185810.3390/nano15110858Exploring Photocatalytic, Antimicrobial and Antioxidant Efficacy of Green-Synthesized Zinc Oxide NanoparticlesSabina Shrestha0Laxmi Tiwari1Sujan Dhungana2Jasana Maharjan3Devendra Khadka4Allison A. Kim5Megh Raj Pokhrel6Janaki Baral7Mira Park8Bhoj Raj Poudel9Department of Chemistry, Tri Chandra Multiple Campus, Tribhuvan University, Kathmandu 44600, NepalDepartment of Chemistry, Tri Chandra Multiple Campus, Tribhuvan University, Kathmandu 44600, NepalDepartment of Chemistry, Tri Chandra Multiple Campus, Tribhuvan University, Kathmandu 44600, NepalDepartment of Chemistry, Padma Kanya Multiple Campus, Tribhuvan University, Kathmandu 44600, NepalDepartment of Chemistry, Tribhuvan Multiple Campus, Tribhuvan University, Tansen 32500, NepalDepartment of Healthcare Management, Woosong University, Daejeon 34606, Republic of KoreaCentral Department of Chemistry, Tribhuvan University, Kirtipur, Kathmandu 44600, NepalDepartment of Chemistry, Tri Chandra Multiple Campus, Tribhuvan University, Kathmandu 44600, NepalCarbon Composite Energy Nanomaterials Research Center, Woosuk University, Wanju-Gun, Chonbuk 55338, Republic of KoreaDepartment of Chemistry, Tri Chandra Multiple Campus, Tribhuvan University, Kathmandu 44600, Nepal<i data-eusoft-scrollable-element="1">Aloe vera</i> is effectively utilized to synthesize zinc oxide nanoparticles (Av-ZnO NPs), providing an alternative to traditional chemical and physical methods. This sustainable approach minimizes the environmental impacts and enhances their compatibility with herbal ecosystems. We comprehensively analyzed the optical, structural, morphological, and catalytic properties of Av-ZnO NPs using various analytical methods. The results indicated that the nanoparticles primarily exhibited a spherical shape. X-ray diffraction (XRD) revealed the successful formation of a highly crystalline hexagonal wurtzite structure, with an average size estimated at 12.2 nm. The antimicrobial properties of the Av-ZnO NPs indicated moderate antibacterial effectiveness. Using the DPPH free radical scavenging method, we evaluated the antioxidant properties, where the Av-ZnO NPs exhibited improved the radical scavenging efficiency, reflected by a lower IC<sub data-eusoft-scrollable-element="1">50</sub> value compared to the plant extract. Additionally, we assessed the photocatalytic functionality through the degradation of methylene blue (MB) dye, finding that the Av-ZnO NPs achieved approximately 82.43% degradation in 210 min, demonstrating their potential for environmental remediation. These findings suggest that green-synthesized ZnO NPs could play a noteworthy role in various nanotechnology applications and biomedical fields, while also promoting environmental sustainability.https://www.mdpi.com/2079-4991/15/11/858<i>Aloe vera</i>antibacterial propertiesantioxidant activityphotocatalysisenvironmental remediationnanotechnology |
| spellingShingle | Sabina Shrestha Laxmi Tiwari Sujan Dhungana Jasana Maharjan Devendra Khadka Allison A. Kim Megh Raj Pokhrel Janaki Baral Mira Park Bhoj Raj Poudel Exploring Photocatalytic, Antimicrobial and Antioxidant Efficacy of Green-Synthesized Zinc Oxide Nanoparticles Nanomaterials <i>Aloe vera</i> antibacterial properties antioxidant activity photocatalysis environmental remediation nanotechnology |
| title | Exploring Photocatalytic, Antimicrobial and Antioxidant Efficacy of Green-Synthesized Zinc Oxide Nanoparticles |
| title_full | Exploring Photocatalytic, Antimicrobial and Antioxidant Efficacy of Green-Synthesized Zinc Oxide Nanoparticles |
| title_fullStr | Exploring Photocatalytic, Antimicrobial and Antioxidant Efficacy of Green-Synthesized Zinc Oxide Nanoparticles |
| title_full_unstemmed | Exploring Photocatalytic, Antimicrobial and Antioxidant Efficacy of Green-Synthesized Zinc Oxide Nanoparticles |
| title_short | Exploring Photocatalytic, Antimicrobial and Antioxidant Efficacy of Green-Synthesized Zinc Oxide Nanoparticles |
| title_sort | exploring photocatalytic antimicrobial and antioxidant efficacy of green synthesized zinc oxide nanoparticles |
| topic | <i>Aloe vera</i> antibacterial properties antioxidant activity photocatalysis environmental remediation nanotechnology |
| url | https://www.mdpi.com/2079-4991/15/11/858 |
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