TY - JOUR
T1 - Bimetallic Ag/Au nanoparticles
T2 - A low temperature ripening strategy in aqueous solution
AU - Ji, Yuetian
AU - Yang, Shengchun
AU - Guo, Shengwu
AU - Song, Xiaoping
AU - Ding, Bingjun
AU - Yang, Zhimao
PY - 2010/12/3
Y1 - 2010/12/3
N2 - Bimetallic Ag/Au nanoparticles (NPs) with alloyed and core-shell structures were synthesized at a low temperature (75 °C) from the preformed gold and silver NPs in aqueous solution. The transmission electron microscope (TEM) mapping images, as well as the evolution of UV/vis spectroscopy, revealed that both the digestive ripening and Ostwald ripening were responsible for the formation of above structures during the heating process. Higher Ag ratios led to the growth of silver shell on the surface of Ag/Au alloy core, while lower Ag ratios tended to the formation of alloy particles. Interparticle diffusion, ligands and chemical potential were presumed to play important roles in the formation of alloyed and core-shell bimetallic Ag/Au NPs.
AB - Bimetallic Ag/Au nanoparticles (NPs) with alloyed and core-shell structures were synthesized at a low temperature (75 °C) from the preformed gold and silver NPs in aqueous solution. The transmission electron microscope (TEM) mapping images, as well as the evolution of UV/vis spectroscopy, revealed that both the digestive ripening and Ostwald ripening were responsible for the formation of above structures during the heating process. Higher Ag ratios led to the growth of silver shell on the surface of Ag/Au alloy core, while lower Ag ratios tended to the formation of alloy particles. Interparticle diffusion, ligands and chemical potential were presumed to play important roles in the formation of alloyed and core-shell bimetallic Ag/Au NPs.
KW - Bimetallic Au/Ag NPs
KW - Low temperature
KW - Ripening process
UR - https://www.scopus.com/pages/publications/78649443690
U2 - 10.1016/j.colsurfa.2010.10.028
DO - 10.1016/j.colsurfa.2010.10.028
M3 - 文章
AN - SCOPUS:78649443690
SN - 0927-7757
VL - 372
SP - 204
EP - 209
JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects
JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects
IS - 1-3
ER -