Carbon nanotube modified carbon composite monoliths as superior adsorbents for carbon dioxide capture
Carbon nanotube modified carbon composite monoliths as superior adsorbents for carbon dioxide capture
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DOI：
10.1039/c3ee24441e
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发表时间：
2013-08
影响因子：
32.5
通讯作者：
Yonggang Jin;S. Hawkins;C. Huynh;S. Su
中科院分区：
文献类型：
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作者：
Yonggang Jin;S. Hawkins;C. Huynh;S. Su
碳复合材料整料是由仅与1wt%碳纳米管（CNT）混合的商用酚醛树脂制备的，然后通过碳化和CO2物理活化。该产品具有多级大孔-微孔结构和上级CO2吸附性能。特别是，它们在低CO2分压下显示出最高的CO2容量（在25 °C和114 mmHg下每克吸附剂52 mg CO2），这与烟道气应用更相关。这与通过复杂的化学活化和官能化产生的碳的那些相匹配或超过。我们的研究表明，通过碳纳米管的碳复合材料的结构改性的有效方法来创建狭窄的微孔。
Carbon composite monoliths were prepared from a commercial phenolic resin mixed with just 1 wt% of carbon nanotubes (CNTs) followed by carbonization and physical activation with CO2. The products possess a hierarchical macroporous–microporous structure and superior CO2 adsorption properties. In particular, they show the top-ranked CO2 capacity (52 mg CO2 per g adsorbent at 25 °C and 114 mmHg) under low CO2 partial pressures, which is of more relevance for flue gas applications. This matches or exceeds those of carbons produced by complex chemical activation and functionalization. Our study demonstrates an effective way to create narrow micropores through structural modification of carbon composites by CNTs.