Selective Incorporation of Aqueous-Phase SWNTs into Pine Cones: A Unique Route to Creating Versatile Carbon Precursors for Electrode Materials
| Autor: | Hyunwoo Han, Hyeonseok Yoon, Yoong Ahm Kim, Subin Chae, Semin Kim, Geunsu Park, Chul Soon Park, Yunseok Choi, Thanh-Hai Le |
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| Rok vydání: | 2018 |
| Předmět: |
Absorption of water
Materials science genetic structures General Chemical Engineering chemistry.chemical_element 02 engineering and technology Carbon nanotube 010402 general chemistry Electrochemistry 01 natural sciences law.invention chemistry.chemical_compound law medicine Environmental Chemistry Potassium hydroxide Renewable Energy Sustainability and the Environment Carbonization General Chemistry 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry Chemical engineering sense organs Swelling medicine.symptom 0210 nano-technology Carbon Conifer cone |
| Zdroj: | ACS Sustainable Chemistry & Engineering. 6:12426-12435 |
| ISSN: | 2168-0485 |
| Popis: | Selective impregnation of single-walled carbon nanotubes (SWNTs) into the interior of pine cones was achieved via inherent folding actuation of the cone by water absorption. Individually dispersed aqueous-phase SWNTs were incorporated into the cone along the pathway of water absorption, and consequently, a concentrated SWNT inclusion was formed on the scales of the cone. To fully exploit its properties as a carbon precursor, the cone was further treated with potassium hydroxide (KOH) solution. The KOH treatment altered the qualitative properties of the cone, which was used to generate activated carbons, and led to swelling of the cell wall of the cone to ultimately increase the size of the pores formed via carbonization. Inclusion of the SWNTs in the cone and the effect of KOH treatment were determined by the characteristics of the constituent tissues of the cone, which offered the opportunity of achieving tissue-dependent textural and electrochemical properties of the carbonized cones. Representatively, ... |
| Databáze: | OpenAIRE |
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