Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 138, Issue 20, Pages 6332-6335Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.6b01328
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Funding
- National Science Foundation [DMR-1255377, CHE-1505839, CHE-1437396]
- 3M Non-tenured Faculty Award
- University of Maryland
- National Science Foundation of China [21222604, U1463205, 21525626]
- Program of Introducing Talents of Discipline to Universities [B06006]
- Program for New Century Excellent Talents in University [NCET-10-0611]
- Maryland NanoCenter and its NispLab
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [1505839] Funding Source: National Science Foundation
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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.
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