释放化学修饰碳凝在酸吸附中的潜力
Regina C Carvalho1, Carlos J Durán-Valle1,2, Marta Adame-Pereira1,2
1Departamento de Química Orgánica e Inorgánica, Universidad de Extremadura, Avda. de Elvas, s/n, 06006 Badajoz, Spain.
Gels (Basel, Switzerland)
|February 23, 2024
概括
经过化学修饰的碳凝有效地从水溶液中吸附酸. 这些增强吸附剂表现出高容量和改进的性能,显示出水处理应用的潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 吸附科学 吸附科学
背景情况:
- 碳凝被探索为吸附剂.
- 表面修改可以提高吸附剂的性能.
- 碳色凝上酸吸附的情况没有得到充分的证据.
研究的目的:
- 为了制备和表征化学修饰的碳凝.
- 为了评估它们在吸附酸中的性能.
- 为了研究表面修改对吸附性质的影响.
主要方法:
- 使用矿物酸和性金属化物进行商业化凝表面修饰.
- 吸附剂的物理化学表征 (表面积,毛孔发育,零电荷点).
- 酸吸附研究以确定平衡,动力学和容量 (Langmuir模型).
主要成果:
- 改性吸附剂具有较高的特定表面积 (347-563 m2 g-1).
- 与矿物酸相比,性金属化物处理的毛孔发育效果更好.
- 吸附能力在62.89至83.33毫克g-1之间,在16小时内达到平衡.
- 吸附在广泛的pH值和温度范围内是有效的,并且在热力学上受到青.
结论:
- 化学表面修饰显著增强了碳凝对酸的吸附.
- 修改后的凝提供了改善的孔隙结构和酸度.
- 这些材料显示出有希望的吸附能力,可以从水中去除酸.
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