中南大学
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返回首页The effect of the activating agent on the textural and chemical properties of ultra-microporous carbon materials on CO2 adsorption
发布时间：2025-09-15
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- DOI码：
- 10.1016/j.matlet.2025.139413
- 发表刊物：
- Materials Letters
- 关键字：
- Biomass; CO2 uptake; K2CO3 activation; KOH activation; Porous carbon material
- 摘要：
- This study introduces a simple, solvent-free method for synthesizing nitrogen-doped ultra-microporous carbon materials using sugarcane bagasse as the carbon source and KOH or K2CO3 as the activating agent. The effects of different activating agent types on physical and chemical properties were discussed. The KOH-activated BOH material exhibited excellent CO2 adsorption properties (4.36 mmol/g at 0 °C and 2.96 mmol/g at 25 °C), with a high surface area (787.9 m2/g), ultra-micropore volume (0.27 cm3/g), and nitrogen content (8.02 at%). While the CO2 uptake of K2CO3-activated material (BK) demonstrates lower values of 3.47 mmol/g and 2.23 mmol/g, respectively. The findings suggest that the combination of higher nitrogen content and ultra-micropore volume enhances CO2 adsorption capacity, demonstrating the potential of KOH-activated carbon materials for efficient CO2 capture applications.
- 论文类型：
- 期刊论文
- 论文编号：
- 139413
- 卷号：
- 403
- 是否译文：
- 否
- 发表时间：
- 2025-08-28
- 收录刊物：
- SCI