乙醇热还原法制备形状可控Ag纳米颗粒.pdf

12 3 2007 6 Vol.12 No.3 Materials Science and Engineering of Powder Metallurgy Jun. 2007 Ag ( 230009) PVP()AgNO3 Ag Ag PVP TF 123.7+2 A 1673-0224(2007)3-183-04 Ethanol-thermal reduction synthesis of silver nanoparticles with controllable shapes NIU Man, JIANG Yang (School of Material Science and Engineering, Hefei University of Technology, Hefei 230009, China) Abstract: A facile synthetic process to produce silver nanoparticles with controllable shapes using Poly (vinyl pyrrolidone) (PVP) as surfactant is introduced. The shapes of silver nanoparticles have kept successfully in tune among quasi-spherical, right triangular and right hexagon at shapes by introducing different amounts of poly(vinyl pyrrolidone) (PVP), and changing the molar ratio between the raw materials of PVP and AgNO , and the aging temperature as well as 3 the holding time of aging temperature. The morphology of the synthesized nanoparticles (NPs) was observed with Hitachi H−800 transmission electron microscopy (TEM) and the spectrum analysis was carried out by altra-violet visualized absorption spectrometry, and son on. Key words: silver nanoparticle; ethanol-thermal reduction; shape control; PVP surfactant [3−6] [1] [7]Ag PVP AgNO3 Ag [2]