Title of article :
An approach for synthesizing nanometer- to micrometer-sized silver nanoplates
Author/Authors :
Zou، نويسنده , , Xiangqin and Ying، نويسنده , , Erbo and Chen، نويسنده , , Hongjun and Dong، نويسنده , , Shaojun، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2007
Pages :
9
From page :
226
To page :
234
Abstract :
Silver nanoplates with controlled size are synthesized by seed-mediated growth approach in the presence of citrate. These nanoplates are single crystal with a mean size of 25–1073 nm and thickness of ca. 10–22 nm. The optical in-plane dipole plasmon resonance bands of these plates can be tuned from 458 to 2400 nm. Control experiments have been explored for a more thorough understanding of the growth mechanism. It was found that the additional citrate ions in the growth solution were the key to controlling the aspect ratio of silver nanoplates. Similar to the surfactants or polymers in the solution, citrate ions could be likewise dynamically adsorbed on the growing silver nanoparticles and promote the two-dimensional growth of silver nanoparticles under certain conditions. Small silver seeds were also found to play an important role in the formation of large thin silver nanoplates, although the structure of them was not clear yet and needed further investigations.
Keywords :
Seed-mediated growth , Silver nanoplates , Citrate , surface plasmon resonance
Journal title :
Colloids and Surfaces A Physicochemical and Engineering Aspects
Serial Year :
2007
Journal title :
Colloids and Surfaces A Physicochemical and Engineering Aspects
Record number :
1795349
Link To Document :
بازگشت