TY - JOUR
T1 - A library of single-crystal metal - tin nanorods
T2 - Using diffusion as a tool for controlling the morphology of intermetallic nanocrystals
AU - Schaak, Raymond Edward
AU - Chou, Nam Hawn
PY - 2008/3/25
Y1 - 2008/3/25
N2 - We describe a unified and general template-based strategy for synthesizing a library of morphology-controllable M-Sn (M = Co, Ni, Cu, Ag, Au, Pt, Ru) intermetallic nanorods. The reaction of β-Sn nanorod templates with appropriate metal salt solutions under reducing conditions yields single-crystal intermetallic nanorods of CoSn3, Ni3Sn4, Cu6Sn5, Ag4Sn, AuSn, PtSn, and RuSn 2. Temperature plays a key role in maintaining the morphology of the β-Sn nanorod templates in the final M-Sn products and also selectively generating spherical nanocrystals vs dense nanorods vs hollow nanorods, in some cases (e.g., CoSn3) within the same system. These observations are linked to the diffusion process, and accordingly, the melting points of the transition elements used in this study can help us understand and predict the morphologies that can be formed, as well as the lowest temperature at which a particular intermetallic compound can form using low-temperature solution routes.
AB - We describe a unified and general template-based strategy for synthesizing a library of morphology-controllable M-Sn (M = Co, Ni, Cu, Ag, Au, Pt, Ru) intermetallic nanorods. The reaction of β-Sn nanorod templates with appropriate metal salt solutions under reducing conditions yields single-crystal intermetallic nanorods of CoSn3, Ni3Sn4, Cu6Sn5, Ag4Sn, AuSn, PtSn, and RuSn 2. Temperature plays a key role in maintaining the morphology of the β-Sn nanorod templates in the final M-Sn products and also selectively generating spherical nanocrystals vs dense nanorods vs hollow nanorods, in some cases (e.g., CoSn3) within the same system. These observations are linked to the diffusion process, and accordingly, the melting points of the transition elements used in this study can help us understand and predict the morphologies that can be formed, as well as the lowest temperature at which a particular intermetallic compound can form using low-temperature solution routes.
UR - http://www.scopus.com/inward/record.url?scp=41749106443&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=41749106443&partnerID=8YFLogxK
U2 - 10.1021/cm703640u
DO - 10.1021/cm703640u
M3 - Article
AN - SCOPUS:41749106443
SN - 0897-4756
VL - 20
SP - 2081
EP - 2085
JO - Chemistry of Materials
JF - Chemistry of Materials
IS - 6
ER -