title: Green synthesis of silver nanoparticles using 4-acetamido-TEMPO-oxidized curdlan.
abstract: A facile, simple, and eco-friendly method using 4-acetamido-2,2,6,6-tetramethypiperidine-1-oxyl radical-oxidized curdlan (Oc) as both reducing and stabilizing agents was developed for the fabrication of silver nanoparticles (AgNPs) from silver nitrate (AgNO₃). The structure, morphology, and particle size of the as-prepared AgNPs were investigated by ultraviolet-visible spectroscopy, transmission electron microscopy, energy dispersive X-ray spectrometry, X-ray diffraction, and dynamic laser light scattering. The well-dispersed AgNPs were sphere like with a mean diameter of 15 nm. Their formation was dependent on reaction duration, reaction temperature, Oc concentration, and AgNO₃ concentration. Fourier transform-infrared and Raman spectra demonstrated that the as-prepared AgNPs can readily bind covalently with the carboxylate groups of Oc through the strong monodentate interaction in the reaction medium.
authors.affiliation: School of Food & Biological Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China. jkyan_27@163.com
authors.forename: Jing-Kun
authors.initials: JK
authors.lastname: Yan
authors.forename: Pan-Fu
authors.initials: PF
authors.lastname: Cai
authors.forename: Xiao-Qiang
authors.initials: XQ
authors.lastname: Cao
authors.forename: Hai-Le
authors.initials: HL
authors.lastname: Ma
authors.forename: Qi
authors.initials: Q
authors.lastname: Zhang
authors.forename: Nan-Zi
authors.initials: NZ
authors.lastname: Hu
authors.forename: Yi-Zhang
authors.initials: YZ
authors.lastname: Zhao
mesh_terms: D000081:Acetamides / Q000737:chemistry*; D002850:Chromatography, Gel; D003497:Cyclic N-Oxides / Q000737:chemistry*; D055772:Green Chemistry Technology / Q000379:methods*; D008027:Light; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D008968:Molecular Conformation; D010316:Particle Size; D012542:Scattering, Radiation; D012834:Silver / Q000737:chemistry*; D012835:Silver Nitrate / Q000737:chemistry; D013052:Spectrometry, X-Ray Emission; D013056:Spectrophotometry, Ultraviolet; D017550:Spectroscopy, Fourier Transform Infrared; D013059:Spectrum Analysis, Raman; D013696:Temperature; D014961:X-Ray Diffraction; D047071:beta-Glucans / Q000138:chemical synthesis* / Q000737:chemistry
chemical_list: D000081:Acetamides; D003497:Cyclic N-Oxides; D047071:beta-Glucans; D012834:Silver; C038459:curdlan; D012835:Silver Nitrate; C003959:TEMPO
keywords: 4-Acetamido-TEMPO; Curdlan; Green synthesis; Silver nanoparticles