title: Oriented growth behavior of Ag nanoparticles using SDS as a shape director.
abstract: We report a chemical approach for synthesizing shape-controlled Ag nanoparticles by using the surfactant SDS as a soft template. The experimental approach includes a two-step reaction: the first step is quickly generating Ag seed clusters by a chemical reaction using sodium borohydride as a reducing reagent; the second is the slow growth of controllable Ag nanoparticles by a mild chemical reaction using hydroxylamine hydrochloride as a reducing reagent. Spherical, polyhedral, and fibrous Ag nanoparticles are synthesized successfully in aqueous solution having SDS concentrations of 0.01, 0.02, and 0.2 wt.%, respectively. Size, morphology, and dispersion stability of these Ag nanoparticles depend on the concentrations of both SDS and AgNO(3).
authors.affiliation: Joining and Welding Research Institute, Osaka University, 11-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan. zq-tan@jwri.osaka-u.ac.jp
authors.forename: Zhenquan
authors.initials: Z
authors.lastname: Tan
authors.forename: Hiroya
authors.initials: H
authors.lastname: Abe
authors.forename: Makio
authors.initials: M
authors.lastname: Naito
authors.forename: Satoshi
authors.initials: S
authors.lastname: Ohara
mesh_terms: D003460:Crystallization; D006046:Gold; D053758:Nanoparticles / Q000737:chemistry*; D012835:Silver Nitrate; D012967:Sodium Dodecyl Sulfate / Q000737:chemistry*
chemical_list: D012967:Sodium Dodecyl Sulfate; D006046:Gold; D012835:Silver Nitrate