Self-Assembly of Complex Multimetal Nanostructures from Perforated Lamellar Block Copolymer Thin Films
| Autor: | Jeong Ho Mun, Seong-Jun Jeong, Hyeong Min Jin, Seung Keun Cha, Jun Soo Kim, Sang Ouk Kim, Chang Yun Moon, Kwang Ho Kim, Gil Yong Lee |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Tafel equation
Nanostructure Materials science Fabrication Nanotechnology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences chemistry.chemical_compound Nanomesh chemistry Copolymer General Materials Science Lamellar structure Self-assembly Thin film 0210 nano-technology |
| Zdroj: | ACS Applied Materials & Interfaces. 9:15727-15732 |
| ISSN: | 1944-8252 1944-8244 |
| DOI: | 10.1021/acsami.7b03319 |
| Popis: | We introduce a facile and effective fabrication of complex multimetallic nanostructures through block copolymer self-assembly. Two- and three-dimensional complex nanostructures, such as “nanomesh,” “double-layered nanomeshes,” and “surface parallel cylinders on nanomesh,” can be fabricated using the self-assembly of perforated lamellar morphology in block copolymer thin films. Simultaneous integration of various metallic elements, including Pt, Au, and Co, into the self-assembled morphologies generates multimetal complex nanostructures with highly interconnected morphology and a large surface. The resultant metal nanostructures with a large surface area, robust electrical connectivity, and well-defined alloy composition demonstrate a high-performance electrochemical catalysis for hydrogen evolution reaction (current density: 6.27 mA/cm2@0.1 V and Tafel slope: 43 mV/dec). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|