Periodic AuAg-Ag2S Heterostructured Nanowires (pages 479–482)
Xun Hong, Zongyou Yin, Zhanxi Fan, Yee-Yan Tay, Junze Chen, Yaping Du, Can Xue, Hongyu Chen and Hua Zhang
Article first published online: 16 SEP 2013 | DOI: 10.1002/smll.201302304
AuAg-Ag2S heterostructured nanowires consisting of periodic AuAg alloy and Ag2S nanocrytals are synthesized in a simple, one-pot reaction. After the AuAg alloy nanowire with a diameter of 2–3 nm is synthesized, it is converted to AuAg-Ag2S heterostructured nanowire by addition of sulfur. The diffusion of Au and Ag in the Ag2S nanocrystals and the subsequent Ostwald ripening process are the key reasons for the formation of heterostructured nanowires. This new type of hybrid nanostructure undergoes photoinduced charge separation and may have photocatalytic applications.