Institute 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.
Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, 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.
Carbohydr Polym. 2018 Oct 1;197:29-37. doi: 10.1016/j.carbpol.2018.05.077. Epub 2018 May 26.
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.
本研究提出了一种在水相介质中通过离子凝胶化机制将 Ag 离子捕获到基于 2-羟丙基-β-环糊精（HPCD）和藻酸盐（Alg）的杂化纳米复合材料上的有效且简便的方法，并使用 Jasminum subtriplinerve 叶的水提物作为还原剂原位组装银纳米颗粒（AgNPs）。纳米复合材料 AgNPs/HPCD/Alg 通过 UV-vis、EDX、TEM、HR-TEM 分析进行了表征。AgNPs 呈球形且尺寸均匀，平均直径为 13.5nm。EDX 数据显示，纳米复合材料 HPCD/Alg 上包覆有约 4.0%（w/w）的 AgNPs。从 FTIR 和热研究中观察到 HPCD 和 Alg 在纳米复合材料中的作用。通过zeta 电位和 DLS 测量确定了纳米颗粒在水溶液中的稳定性和分布。纳米复合材料在降解工业废水中的污染物方面表现出优异的催化性能，包括 4-硝基苯酚、甲基橙和罗丹明 B。
