An efficient ZnO and Ag/ZnO honeycomb nanosheets for catalytic green one-pot synthesis of coumarins through Knoevenagel condensation and antibacterial activity
- Title
- An efficient ZnO and Ag/ZnO honeycomb nanosheets for catalytic green one-pot synthesis of coumarins through Knoevenagel condensation and antibacterial activity
- Creator
- Pn P.K.; Ks P.; H Pattanashetty S.; Bc V.K.; Kv A.A.; Abraham A.L.; Varghese F.; Bahir A.A.
- Description
- This study pioneers the synthesis of porous Ag/ZnO nanosheets, focusing on their role as a catalyst in Knoevenagel condensation. Notably, these nanosheets display exceptional catalytic efficacy and captivating antibacterial properties. The research delves into the Ag/ZnO catalyst's recyclability and proposes a potential reaction mechanism, marking the first comprehensive exploration of Knoevenagel condensation on porous Ag/ZnO nanosheets. Key findings underscore the successful synthesis of coumarin derivatives using various o-hydroxy benzaldehyde and 1,3-dicarbonyl compounds, with nano-Ag/ZnO serving as a catalyst via a monomode microwave-assisted approach. X-ray diffraction (XRD), Field Emission Scanning Electron Microscopy (FE-SEM), Transmission Electron Microscopy (TEM) and UV-Vis spectroscopy were used in conjunction with other physicochemical methods to characterize the synthesized catalytic samples. The method boasts advantages such as high product yields, brief reaction durations, and the ability to reuse the catalyst for multiple cycles. The Ag/ZnO nanosheets, functioning as an acid catalyst, activate carbonyl groups and facilitate their interaction with methylene-containing active molecules. In addition, antibacterial activity assessments demonstrate the superior effectiveness of Ag/ZnO nanocomposites compared to ZnO nanosheets against Staphylococcus aureus germs. This multifaceted study not only advances catalytic synthesis but also unveils promising biological applications of porous Ag/ZnO nanosheets. 2024 Walter de Gruyter GmbH, Berlin/Boston 2024.
- Source
- Zeitschrift fur Physikalische Chemie
- Date
- 2024-01-01
- Publisher
- Walter de Gruyter GmbH
- Subject
- catalyst; coumarins; green chemistry; Knoevenagel condensation; silver doped zinc oxide (Ag/ZnO)
- Coverage
- Pn P.K., Department of Chemistry, DRM Science College, Karnataka, Davanagere, India; Ks P., Department of Physics, St. Mary's College, Sulthan Bathery, Wayanad, India; H Pattanashetty S., Department of Chemistry, G.M. University, P.B. Road, Karnataka, Davanagere, 577006, India; Bc V.K., Department of Chemistry, DRM Science College, Karnataka, Davanagere, India; Kv A.A., CPMU, Technical Assistant Trainee, JNCASR, Bengaluru, India; Abraham A.L., Department of Chemistry, Christ University, Bengaluru, India; Varghese F., Department of Physics, St. Mary's College, Sulthan Bathery, Wayanad, India; Bahir A.A., Chemistry Department, Faculty of Science, King Khalid University, Abha, 64734, Saudi Arabia
- Rights
- Restricted Access
- Relation
- ISSN: 9429352; CODEN: ZPCFA
- Format
- Online
- Language
- English
- Type
- Article
Collection
Citation
Pn P.K.; Ks P.; H Pattanashetty S.; Bc V.K.; Kv A.A.; Abraham A.L.; Varghese F.; Bahir A.A., “An efficient ZnO and Ag/ZnO honeycomb nanosheets for catalytic green one-pot synthesis of coumarins through Knoevenagel condensation and antibacterial activity,” CHRIST (Deemed To Be University) Institutional Repository, accessed February 28, 2025, https://archives.christuniversity.in/items/show/13630.