洞察不同氧异原子对从香烟烟雾中尼古丁吸附的影响
Phongphot Sakulaue1, Kulpavee Jitapunkul1, Parinya Inthasuwan2
1School of Bio-Chemical Engineering and Technology, Sirindhorn International Institute of Technology, Thammasat University, Pathum Thani, 12120, Thailand.
由大麻衍生的活性炭有效地从香烟烟雾中去除尼古丁. 含有氧的功能组,特别是碳酸组,增强尼古丁吸附,提供了一个有前途的过策略.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 香烟烟雾含有尼古丁等有害化学物质,与各种疾病有关.
- 从主流烟雾中去除尼古丁对公共健康至关重要.
- 使用固体材料的吸附是一种可行的尼古丁去除方法.
研究的目的:
- 为了研究从大麻 (Cannabis sativa) 茎中提取的活性炭对从香烟烟雾中吸收尼古丁的有效性.
- 确定负责尼古丁吸附的关键表面特性和功能组.
- 通过计算分析尼古丁和活性炭表面之间的相互作用.
主要方法:
- 从大麻茎中合成活性碳,使用酸激活在350-550°C.
- 尼古丁吸附效率通过分析香烟主流烟雾来评估.
- 使用X射线光电子光谱 (XPS) 和温度编程脱吸 (TPD) 进行了表面特性鉴定.
- 密度函数理论 (DFT) 模拟用于计算分析.
主要成果:
- 合成的活性炭显示出高尼古丁去除效率,从68%到88%不等.
- 可变的表面功能组和活性炭的多孔性影响了尼古丁吸附.
- 含有氧的功能组,特别是碳酸组,被确定为优越尼古丁吸附的关键.
- DFT模拟证实了含氧组的重要作用,碳酸组显示了最低的吸附能量.
结论:
- 来自大麻茎的活性炭在从香烟烟雾中去除尼古丁方面非常有效.
- 活性炭表面含有氧的功能组的存在和类型对于有效的尼古丁吸附至关重要.
- 碳氧基团在增强尼古丁吸附方面发挥着关键作用,这一点得到了计算发现的支持.
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