1. Synthesis of Platinum Nanotubes and Nanorings via Simultaneous Metal Alloying and Etching.
- Author
-
Zhiqi Huang, Raciti, David, Shengnan Yu, Lei Zhang, Lin Deng, Jie He, Yijing Liu, Khashab, Niveeen M., Chao Wang, Jinlong Gong, and Zhihong Nie
- Subjects
- *
NANOSTRUCTURES , *OXYGEN reduction , *CATALYSIS , *CHEMICAL reactions , *ALLOYS - Abstract
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 nm. This communication describes a simultaneous alloying-etching strategy for the synthesis of Pt nanotubes with open ends by selective etching Au core from coaxial Au/Pt nanorods. This approach can be extended for the preparation of Pt nanorings when Saturnlike 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--37 nm and 2--32 nm, respectively. We further demonstrated that the nanotubes with ultrathin side walls showed superior catalytic performance in oxygen reduction reaction. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF