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Nandhini G, Shobana MK. Influence of phytochemicals with iron oxide nanoparticles for biomedical applications: a review. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04648-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Kaur H, Anand V, Sharma A, Verma M, Sareen S, Mehta SK, Mutreja V. Mechanistic investigation of formation of highly-dispersed silver nanoparticles using sea buckthorn extract. NANOTECHNOLOGY 2022; 34:085703. [PMID: 36368025 DOI: 10.1088/1361-6528/aca20d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Accepted: 11/10/2022] [Indexed: 06/16/2023]
Abstract
Nowadays, the greener pathways for the synthesis of nanostructures are being explored. The extracts of different parts of plantsvizleaves, stems, and roots have been investigated. However, these extracts have been prepared by simply boiling or microwaving, or sonicating the parts of plants with water. Therefore, to have deeper insight and to investigate the full potential of plant extracts, serial extraction of leaves of sea buckthorn (Hippophae rhamnoides L.) which is a medicinally important plant was attempted using the soxhlet apparatus. The as-obtained polyphenolic-rich extract was employed for the preparation of silver nanoparticles (Ag-NPs). Under optimized reaction conditionsviz60 °C temperature and 500μl of extract solution (5 mg ml-1) highly disperse spherical nanoparticles of the average size of 15.8 ± 4.8 nm were obtained. Further, the optical band gap of Ag-NPs prepared using optimized reaction conditions was found to be 2.6 eV using the Tauc equation. Additionally, to understand the reduction by the extract, kinetic studies were also carried out which suggest the predominant occurrence of pseudo-first-order reaction. Furthermore, the mechanism of formation of Ag-NPs using major components of extractvizgallic acid and catechin which were identified by HPLC were also investigated using DFT. The mechanistic investigation was performed for both the keto-enol and radical-mediated preparation of Ag-NPs. Such theoretical investigations will help in the efficient designing of greener and novel routes for the synthesis of Ag-NPs. Additionally, the prepared silver was also employed for the colorimetric detection of H2O2.
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Affiliation(s)
- Hardeep Kaur
- Department of Chemistry, University Institute of Science, Chandigarh University, Mohali, Punjab-140 413, India
- Department of Biotechnology, University Institute of Biotechnology, Chandigarh University, Mohali, Punjab-140 413, India
| | - Vivek Anand
- Department of Chemistry, University Institute of Science, Chandigarh University, Mohali, Punjab-140 413, India
| | - Ajay Sharma
- Department of Chemistry, University Institute of Science, Chandigarh University, Mohali, Punjab-140 413, India
- University Centre for Research and Development, Chandigarh University, Mohali, 140 413, Punjab, India
| | - Meenakshi Verma
- Department of Chemistry, University Institute of Science, Chandigarh University, Mohali, Punjab-140 413, India
- University Centre for Research and Development, Chandigarh University, Mohali, 140 413, Punjab, India
| | - Shweta Sareen
- Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh-160 014, India
| | - Surinder Kumar Mehta
- Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh-160 014, India
| | - Vishal Mutreja
- Department of Chemistry, University Institute of Science, Chandigarh University, Mohali, Punjab-140 413, India
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