Electrochemical modification of vertically aligned carbon nanotube arrays
| Autor: | Andrew I. Gapin, Chen Ic, Jan B. Talbot, Sungho Jin, Chen Wang, Li-Han Chen, X. R. Ye, Joseph F. Aubuchon |
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| Rok vydání: | 2006 |
| Předmět: |
business.product_category
Materials science Supercritical drying chemistry.chemical_element Nanotechnology Carbon nanotube Electrochemistry Platinum nanoparticles Redox Surfaces Coatings and Films law.invention chemistry law Microfiber Materials Chemistry Physical and Theoretical Chemistry business Carbon Electrical conductor |
| Zdroj: | The journal of physical chemistry. B. 110(26) |
| ISSN: | 1520-6106 |
| Popis: | Electrochemical oxidation and reduction were utilized to modify vertically aligned carbon nanotube (CNT) arrays grown on a porous network of conductive carbon microfibers. Ultrafast and complete CNT opening and purification were achieved through electrochemical oxidation. Highly dispersed platinum nanoparticles were then uniformly and densely deposited as electrocatalysts onto the surface of these CNTs through electrochemical reduction. Using supercritical drying techniques, we demonstrate that the unidirectionally aligned and laterally spaced geometry of the CNT arrays can be fully retained after being subjected to each step of electrochemical modification. The open-tipped CNTs can also be electrochemically detached in full lengths from the supporting substrates and harvested if needed. |
| Databáze: | OpenAIRE |
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