Back to Search
Start Over
Fabrication of silver nanoparticles decorated on sodium alginate microbeads enriched with keratin and investigation of its catalytic and antioxidant activity.
- Source :
-
International Journal of Biological Macromolecules . May2024:Part 2, Vol. 267, pN.PAG-N.PAG. 1p. - Publication Year :
- 2024
-
Abstract
- In this study, an environmentally friendly, effective, easily synthesizable and recoverable nano-sized catalyst system (Ag@NaAlg-keratin) was designed by decorating Ag nanoparticles on microbeads containing sodium alginate (NaAlg) and keratin obtained from goose feathers. The structure, morphology and crystallinity of the Ag@NaAlg-keratin nanocatalyst were evaluated by XRD, FT-IR, FE-SEM, EDS/EDS mapping and TEM analyses. Catalytic ability of designed Ag@NaAlg-keratin nanocatalyst was then investigated against 4-nitrophenol (4-NP) and methyl orange (MO) reductions. Ag@NaAlg-keratin nanocatalyst effectively reduced 4-NP in 6 min and MO in 5 min, with rate constants of 0.17 min−1 and 0.16 min−1, respectively. Additionally, activation energies (Ea) were found as 39.8 kJ/mol for 4-NP and 37.9 kJ/mol for MO. Performed recyclability tests showed that the Ag@NaAlg-keratin nanocatalyst was easily recovered due to its microbead form and successfully reused five times, maintaining both its activity and structure. Furthermore, antioxidant activity of Ag@NaAlg-keratin nanocatalyst was the highest (73.16 %). [Display omitted] • Silver nanoparticles adorned on NaAlg-keratin micro beads as heterogenous catalyst • Catalytic and antioxidant potential of Ag@NaAlg-keratin nanocatalyst was investigated. • Ag@NaAlg-keratin nanocatalyst efficiently reduced 4-NP and MO. • Ag@NaAlg-keratin was easily recoverable and applicable for 5 successive runs. • Ag@NaAlg-keratin demonstrated 73.16 % DPPH activity. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01418130
- Volume :
- 267
- Database :
- Academic Search Index
- Journal :
- International Journal of Biological Macromolecules
- Publication Type :
- Academic Journal
- Accession number :
- 177036437
- Full Text :
- https://doi.org/10.1016/j.ijbiomac.2024.131478