) 通过Mg/Al分层双氧化物修饰的Sphagnum Moss纤维素凝吸附:性能和机制
Junpeng Ren1, Shijiang Zhang1, Yu Wang1
1School of Chemistry and Materials Science, Guizhou Education University, Guiyang 550018, China.
Molecules (Basel, Switzerland)
|May 7, 2025
概括
一种新型的Mg/Al层双氧化物 (LDH) 修饰的菌纤维素凝有效地从水中去除有毒的六价 (Cr(VI)). 这种可生物降解的吸附剂对可持续的重金属废水处理具有前景.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 化学 化学 化学
背景情况:
- 六价 (Cr(VI)) 是一种有毒和致癌的污染物,对水生生物和人类健康构成风险.
- 需要有效,环保和经济高效的吸附剂来从废水中去除CrVI.
研究的目的:
- 开发和描述一种新型的Mg/Al分层双氧化物 (LDH) 修饰的藻纤维素凝 (MgAl/LDH@SMCG) 用于CrVI去除.
- 研究用于Cr (VI) 整治的开发材料的吸附性能和机制.
主要方法:
- 斯法gnum纤维素进行了预处理,与聚乙醇交联,并与Mg/Al LDH合,以创建MgAl/LDH@SMCG复合物.
- 材料的表征包括SEM,TGA,FT-IR和XPS.
- 批量吸附实验评估了在不同条件下 (pH,度,时间,温度) 的CrVI去除效率.
主要成果:
- MgAl/LDH@SMCG复合物表现出增强的结构稳定性和丰富的合基 (-COOH, -OH).
- 吸附遵循伪二次动力学和弗洛伊德利希异热模型,表明单层化学吸附.
- 由于表面粗度和吸附点的增加,修改后的凝显著提高了Cr (VI) 去除效率.
结论:
- 具有LDH功能化的纤维素凝是有效和可持续的吸附剂,用于去除Cr (VI).
- 开发的MgAl/LDH@SMCG为处理重金属污染废水提供了一个有前途的解决方案.
- 这项研究有助于了解Cr (VI) 吸附机制,并开发先进的净水技术.
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