Preparation of phenolic resin derived 3-D ordered macroporous carbon |
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Authors: | Hao Wang Xiaodong Li Lan-Young Hong Dong-Pyo Kim |
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Affiliation: | (1) Key Lab of Ceramic Fiber and Composites, National University of Defense Technology, Changsha, 410073, People’s Republic of China;(2) Department of Fine Chemical Engineering and Chemistry, Chungnam National University, Daejeon, 305-764, South Korea |
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Abstract: | Three-dimensionally ordered long-range macroporous carbon structures were prepared using commercially available phenolic resin
by utilizing sacrificial colloidal silica crystalline arrays as templates that were subsequently removed by HF etching after
pyrolysis in an argon atmosphere. SEM, TEM, and BET were employed to characterize the morphology and the surface area of the
porous carbon structures. The pore size (150–1000 nm) and BET surface area, which reflect pore volume (298.6 m2/g (1.32 cm3/g) ∼ 93.7 m2/g (0.12 cm3/g)), of the macroporous carbon structures produced were approximately proportional to the size (150–1000 nm) of the sacrificial
silica sphere templates used (annealing temp. 550°C). The achieved 550 nm porous carbon structures were examined to function
as potential catalyst carriers and were successfully impregnated with Ag or Pt-Ru on their inner walls after borohydride reduction
at room temperature. In addition, porous carbon patterns were fabricated using the ‘micromolding in capillary’ technique,
which has potential applications in the microreaction technology. |
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Keywords: | Macroporous carbon Catalyst Sacrificial template method Colloidal crystal array Micromolding in capillary |
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