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 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 14-37 nm and 2-32 nm, respectively. We further demonstrated that the nanotubes with ultrathin side walls showed superior catalytic performance in oxygen reduction reaction. © 2016 American Chemical Society.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 6332-6335 |
| Number of pages | 4 |
| Journal | Journal of the American Chemical Society |
| Volume | 138 |
| Issue number | 20 |
| DOIs | |
| State | Published - Apr 29 2016 |
Bibliographical note
KAUST Repository Item: Exported on 2020-10-01Acknowledgements: Z.N. gratefully acknowledges the financial support of National Science Foundation Career Award (DMR-1255377), National Science Foundation (CHE-1505839), 3M Non-tenured Faculty Award and Startup fund from the University of Maryland. J.G. thanks National Science Foundation of China (21222604, U1463205, and 21525626), the Program of Introducing Talents of Discipline to Universities (B06006), and the Program for New Century Excellent Talents in University (NCET-10-0611). D.R. and C.W. thank the support by the National Science Foundation (CHE-1437396). We also acknowledge the support of the Maryland NanoCenter and its NispLab. The NispLab is supported in part by the NSF as a MRSEC Shared Experimental Facilities.