Self-Assembled Exopolysaccharide Nanoparticles for Bioremediation and Green Synthesis of Noble Metal Nanoparticles

• DOI: 10.1021/acsami.7b02908
• Publication Date: 2017-06-14T18:02:30Z
• Authors: Chengcheng Li; Le Zhou; Hang Yang; Roujing Lv; Peilong Tian; Xu Li; Yaqin Zhang; Zhan Chen; Fengming Lin
• Keywords: Biosorption; Nanomaterials; Noble metal

Continuing efforts have been made to explore novel exopolysaccharides (EPSs) for valuable applications. In this research, we report the first time that a non-glucan EPS named EPS-605 can self-assemble form spherical nanosize particles of ∼88 nm in diameter, expanding both range type and structural EPSs into. Characterization shows it is composed mannose, glucose, galactose with several modifications including acylation, phosphorylation, sulfation, carboxylation, highly negative charge. showed record biosorption capability Pb2+, Cu2+, Cd2+, methylene blue as compared other reported EPSs, biosorbents, nanosorbents. The adsorption ability affected by pH, temperature, initial adsorbate concentration, contact time, presence background electrolytes. mechanism adsorbing heavy metals seems be different dyes. Moreover, serve reductant synthesis Au nanoparticles (AuNPs) AgNPs enabling good monodispersity within shortest (of 30 min) from without any extra pretreatment. Our research advances development provides new, eco-friendly, renewable platform bioremediation green nanomaterials.