Journal
CHEMISTRY OF MATERIALS
Volume 22, Issue 8, Pages 2681-2684Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cm100418w
Keywords
-
Funding
- National Research Foundation of Korea [R31-2008-000-10029-0, 2009-0083199, 2009-0069354, NRF-20090094025]
- National Research Foundation of Korea [2009-0069354] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Ask authors/readers for more resources
This paper reports on a methodology for synthesizing vertical arrays of hollow platinum nanotubes with [111] single-crystalline nanoflakes. Initially, single-component nickel nanorods were fabricated with the aid of AAO templates and electrochemical deposition. When the resulting nickel nanorods were immersed in a Pt-ion-containing aqueous solution, the nickel metal dissolved into Ni2+ ions through spontaneous galvanic replacement with Pt ions. However, the direct replacement between nickel nanorods and Pt ions led to an irregular architecture in the resulting deposition of platinum. Instead, a pitting corrosion pretreatment of the nickel nanorods produced nucleation sites for replacement with the Pt ions. This step was critical for accelerating the interfacial replacement reaction rate and the formation of the regular platinum nanotubes with ultrathin superficial nanoflakes We found that the Kirkendall effect was operative in the formation of platinum nanotubes
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available