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基于奇托桑的磁性生物吸收剂的构建,以有效地回收Ni (II)

Ting Guo¹, Chaoke Bulin²

¹College of energy and environment, Inner Mongolia University of Science and Technology, Baotou 014010, PR China.

International journal of biological macromolecules

|March 9, 2025

概括

一种新的磁性复合材料吸附剂有效地从废水中去除 (II) 离子. 这种Fe3O4-石墨烯氧化物-酸盐复合物 (FGOC) 具有高吸附能力和选择性,为重金属回收提供可持续的解决方案.

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:

重金属污染对环境构成重大威胁,需要有效的清除策略.
开发先进的吸附剂对于从工业废水中回收贵金属至关重要.

研究的目的:

构建一个磁性Fe3O4-石墨烯氧化物-酸盐复合物 (FGOC) 进行有效的Ni (II) 离子吸附.
使用多种分析技术阐明FGOC和Ni的相互作用机制.

主要方法:

FGOC磁性生物吸附剂的一步溶热合成.
吸附实验以评估Ni(II) 在不同pH水平上的清理效率.
通过吸附拟合,硬软酸理论 (HSAB) 和光谱分析 (XPS,UV-Vis,光辐射) 阐明机制.

主要成果:

与单个组件相比,FGOC表现出更高的Ni(II) 清除效率,特别是在pH> 6.
在pH10.0下达到96.52%和386.09 mg·g−1的最大吸附率.
吸附剂在六个循环后保持了高性能 (88.41%,353.63毫克·g-1),并显示了对Ni的选择性.
吸附遵循异质亲和力的化学吸附动力学,其中功能组 (-OH, -COOH, -C(=O) NH-, -NH2) 驱动该过程.

结论:

合成的FGOC是一种高效且可重复使用的吸附剂,用于从废水中回收Ni (II).
该研究提供了对吸附机制的见解,突出了复合材料的协同贡献.
FGOC为可持续重金属整治和资源回收提供了一个有希望的方法.

关键词:

生物材料是一种生物材料.在 HSAB 理论中,磁吸附剂是一种磁吸附剂.

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