Oriented growth behavior of Ag nanoparticles using SDS as a shape director.
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).
Tan
Zhenquan
Z
Joining and Welding Research Institute, Osaka University, 11-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan. zq-tan@jwri.osaka-u.ac.jp
Abe
Hiroya
H
Naito
Makio
M
Ohara
Satoshi
S
D003460:Crystallization; D006046:Gold; D053758:Nanoparticles / Q000737:chemistry*; D012835:Silver Nitrate; D012967:Sodium Dodecyl Sulfate / Q000737:chemistry*
D012967:Sodium Dodecyl Sulfate; D006046:Gold; D012835:Silver Nitrate