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聚醚胺冠层结构对磁性无溶剂纳米流体吸附重金属离子的影响

Effects of Polyether Amine Canopy Structure on Heavy Metal Ions Adsorption of Magnetic Solvent-Free Nanofluids.

作者信息

Zhang Qi, Zhang Jian, Shi Jian, Yang Ruilu

机构信息

Analysis and Testing Center, Nantong University, Nantong 226019, China.

School of Transportation and Civil Engineering, Nantong University, Nantong 226019, China.

出版信息

Nanomaterials (Basel). 2024 Mar 11;14(6):505. doi: 10.3390/nano14060505.

DOI:10.3390/nano14060505
PMID:38535653
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10974927/
Abstract

Three FeO magnetic solvent-free nanofluids with different amine-based coronal layer structures are synthesized and characterized by using magnetic FeO as the core, silane coupling agent as the corona, and polyether amines with different graft densities and chain lengths as the canopy. The concentration of heavy metal ions after adsorption is measured by atomic absorption spectrometry (AAS) to study the effect of FeO magnetic solvent-free nanofluids on the adsorption performance of the heavy metal ions lead (Pb(II)) and copper (Cu(II)) in water. The adsorption of FeO magnetic solvent-free nanofluid was explored by changing external condition factors such as adsorption contact time and pH. Additionally, the adsorption model is established. The magnetic solvent-free nanofluid is separated from water by applying an external magnetic field to the system, and desorption and cyclic adsorption tests are carried out. Based on the adsorption mechanism, the structure design of FeO magnetic solvent-free nanofluid was optimized to achieve optimal adsorption performance.

摘要

以磁性FeO为核、硅烷偶联剂为冠层、具有不同接枝密度和链长的聚醚胺为伞层，合成并表征了三种具有不同胺基冠层结构的FeO磁性无溶剂纳米流体。通过原子吸收光谱法（AAS）测量吸附后重金属离子的浓度，以研究FeO磁性无溶剂纳米流体对水中重金属离子铅（Pb(II)）和铜（Cu(II)）吸附性能的影响。通过改变吸附接触时间和pH等外部条件因素，探索了FeO磁性无溶剂纳米流体的吸附情况。此外，还建立了吸附模型。通过对系统施加外部磁场，将磁性无溶剂纳米流体与水分离，并进行解吸和循环吸附试验。基于吸附机理，对FeO磁性无溶剂纳米流体的结构设计进行了优化，以实现最佳吸附性能。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/61da/10974927/a27ae96d93fe/nanomaterials-14-00505-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/61da/10974927/6c49e75601d9/nanomaterials-14-00505-g001.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/61da/10974927/2523530902fb/nanomaterials-14-00505-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/61da/10974927/4cc2b9cec56d/nanomaterials-14-00505-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/61da/10974927/a27ae96d93fe/nanomaterials-14-00505-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/61da/10974927/6c49e75601d9/nanomaterials-14-00505-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/61da/10974927/a1d6a2ccdc1f/nanomaterials-14-00505-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/61da/10974927/d35511f0c46b/nanomaterials-14-00505-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/61da/10974927/1adae893548b/nanomaterials-14-00505-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/61da/10974927/2523530902fb/nanomaterials-14-00505-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/61da/10974927/4cc2b9cec56d/nanomaterials-14-00505-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/61da/10974927/a27ae96d93fe/nanomaterials-14-00505-g007.jpg

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