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Biosynthesized AgNP capped on novel nanocomposite 2-hydroxypropyl-β-cyclodextrin/alginate as a catalyst for

Thanh-Danh Nguyen¹, Chi-Hien Dang², Dinh-Tri Mai²

¹Institute of Research and Development, Duy Tan University, Da Nang City, Viet Nam; Institute of Chemical Technology, Vietnam Academy of Science and Technology, 1 Mac Dinh Chi Street, District 1, Ho Chi Minh City, Viet Nam.

Carbohydrate Polymers

|July 16, 2018

Abstract:

This study presents an efficient and facile method for the trapping of Ag⁺ ions on hybrid nanocomposite based on 2-hydroxypropyl-β-cyclodextrin (HPCD) and alginate (Alg) in aqueous medium through ionotropic gelation mechanism and followed by in situ assembly of silver nanoparticles (AgNPs) using aqueous extract of Jasminum subtriplinerve leaves as a reducing agent. The nanocomposite AgNPs/HPCD/Alg was characterized by UV-vis, EDX, TEM, HR-TEM analysis. The AgNPs were found to be spherical shape and uniform size with an average diameter of 13.5 nm. EDX data showed about 4.0% (w/w) of AgNPs capped on the nanocomposite HPCD/Alg. The role of HPCD and Alg in the nanocomposites was observed from FTIR and thermal studies. The stability and distribution of the nanoparticles in the aqueous solution were determined by zeta potential and DLS measurements. The nanocomposites showed excellent catalytic performance for degradation of pollutants within industrial effluents including 4-nitrophenol, methyl orange and rhodamine B.

Keywords:

2-Hydroxypropyl-β-cyclodextrin (HPCD)Alginate (Alg)Biosynthesis Catalysis Jasminum subtriplinerve Silver nanoparticles (AgNPs)

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