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Facile green synthesis of highly stable, water dispersible carbohydrate conjugated Ag, Au and Ag-Au biocompatible nanoparticles: Catalytic and antimicrobial activity by Debasish Borah; Vishal Mishra; Rupam Debnath; Kheyali Ghosh; Debika Gogoi; Jayashree Rout; Piyush Pandey; Narendra Nath Ghosh; Chira Ranjan Bhattacharjee is a Engineering article available to read on EtoBox.

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Highly stable carbohydrate conjugated silver, gold and bimetallic silver-gold alloy biocompatible and nearly monodisperse nanoparticles (NPs) have been synthesized through bio-reduction of aqueous solution of corresponding metal salt precursors mediated by aqueous extracts of a high altitude lichen, Lobaria retigera. The biomolecule accountable for the reduction, stabilization and capping of the metal nanoparticles is identified to be carbohydrates. The as-synthesized carbohydrate conjugated nanoparticles have excellent dispersibilty in water, phosphate, phosphate-buffered saline, and serum media. The resulting nanoparticles were completely stable for several months in water. The nanoparticles were characterized using UV-visible spectroscopy, TEM, EDX, FT-IR, powder XRD, DLS and CV study. Though mostly spherical in shapes, J o u r n a l P r e -p r o o f 2 | P a g e occasionally truncated triangular and rod shapes were also noted. The average particle sizes of Ag, Au and Ag-Au alloy nanoparticles as determined from TEM analysis are 14.5 nm, 11.7 nm and 16.3 nm, respectively. Cyclic voltammetry pointed to a relatively high electrode potential barrier for the synthesized nanomaterials

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Author

Debasish Borah; Vishal Mishra; Rupam Debnath; Kheyali Ghosh; Debika Gogoi; Jayashree Rout; Piyush Pandey; Narendra Nath Ghosh; Chira Ranjan Bhattacharjee

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Engineering (Physical Sciences)