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

• Published in: Carbohydrate polymers 2018-10, Vol.197, p.29-37
• Main Authors: Nguyen, Thanh-Danh, Dang, Chi-Hien, Mai, Dinh-Tri
• Format: Article
• Language: English
• Subjects: 2-Hydroxypropyl-β-cyclodextrin (HPCD); Alginate (Alg); Biosynthesis; Catalysis; Jasminum subtriplinerve; Silver nanoparticles (AgNPs)
• ISSN: 0144-8617; 1879-1344
• DOI: 10.1016/j.carbpol.2018.05.077

[Display omitted] •The novel hybrid nanocomposites were prepared from HPCD and alginate.•Capping of AgNPs on the nanocomposites was studied.•Biosynthesis of AgNPs was investigated by using aqueous extract of Jasminum subtriplinerve leaves.•Physicochemical characterizations of the nanocomposites were determined.•Recyclable catalytic activity was performed for degradation of pollutants in aqueous medium. 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.