A series of ultra-light aerogels made of oxidized carbon nanotubes and cross-linked polyvinyl alcohol has been prepared by freeze drying of hydrogels, characterised, and tested as amine impregnated solid supports for CO₂ capture. The prepared spongy aerogels have demonstrated mechanical, chemical and thermal stabilities, and are electrically conducting. Polyethyleneimine impregnated aerogels with an amine content of 75–83% demonstrated CO₂ capacity values ≥3.3 mmol g⁻¹ in a dilute gas stream, which makes the prepared aerogels highly promising supports for amine impregnation in carbon capture applications.

中文翻译：

---

PEI浸渍的碳纳米管/ PVA气凝胶：用于CO ₂捕获的 固体吸附剂

通过对水凝胶进行冷冻干燥，制备了一系列由氧化的碳纳米管和交联的聚乙烯醇制成的超轻气凝胶，对其进行了表征和测试，以作为胺浸渍的固体载体用于CO ₂捕集。制备的海绵状气凝胶已显示出机械，化学和热稳定性，并且具有导电性。胺含量为75–83％的聚乙烯亚胺浸渍气凝胶在稀薄气流中的CO ₂容量值≥3.3 mmol g ^-1，这使得制备的气凝胶成为碳捕集应用中胺浸渍的极有希望的载体。