Smart Hybrid Materials (SHMs)
Khashab Research Group
Innovatively Functionalized Nanomaterials for Biomedical, Sensing and Composites Applications

Page 04/27/2016 13:17:42

Synthesis of Platinum Nanotubes and Nanorings via Simultaneous Metal Alloying and Etching

Huang, Z.; Raciti, D.; Yu, S.; Zhang, L.; Deng, L.; He, J.; Liu, Y.; Khashab, N. M.; Wang, C.; Gong, J.; Nie, Z. Synthesis of Platinum Nanotubes and Nanorings via Simultaneous Metal Alloying and Etching. J. Am. Chem. Soc. 2016, 138, 6332–6335
Huang, Z.; Raciti, D.; Yu, S.; Zhang, L.; Deng, L.; He, J.; Liu, Y.; Khashab, N. M.; Wang, C.; Gong, J.; Nie, Z.
Metallic nanotubes, alloying-etching, catalysis
2016
Metallic nanotubes represent a class of hollow nanostructures with unique catalytic properties. However, the wet-chemical synthesis of metallic nanotubes remains a substantial challenge, especially for those with dimensions below 50 nanometers. This communication describe a simultaneous alloying-etching strategy for the synthesis of Pt nanotubes with open ends by selective etching Au core from coaixial Au/Pt nanorods. This approach can be extended for the preparation of Pt nanorings when Saturn-like Au core/Pt shell nanoparticles are used. The diameter and wall thickness of both nanotubes and nanorings can be readily controlled in the range of 14 nm to 37 nm and 2 nm to 32 nm, respectively. We further demonstrated that the nanotubes with ultrathin side walls showed superior catalytic performance in oxygen reduction reaction.