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聚苯胺改性埃洛石纳米管作为在不同重金属存在下去除萘普生的高效吸附剂。

Polyaniline-modified halloysite nanotubes as high-efficiency adsorbents for removing of naproxen in the presence of different heavy metals.

作者信息

Wang Qihui, Huang Minghui, Zhu Ying, Wang Jiexue, He Zihang, Liu Jun, Sun Kang, Li Zhonghui, Deng Guowei

机构信息

College of Chemistry and Life Science, Sichuan Provincial Key Laboratory for Structural Optimization and Application of Functional Molecules, Chengdu Normal University Chengdu 611130 China

Sichuan Key Laboratory of Medical Imaging & Department of Chemistry, School of Preclinical Medicine, North Sichuan Medical College Nanchong 637000 China.

出版信息

RSC Adv. 2023 Aug 4;13(34):23505-23513. doi: 10.1039/d3ra03671e.

DOI:10.1039/d3ra03671e
PMID:37546225
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10402452/
Abstract

In this work, novel adsorbent polyaniline-modified halloysite nanotubes (HNT@PA-2) were synthesized successfully by polymerization to increase active adsorption sites. With the increase of the amount of aniline, the adsorption capacity of naproxen becomes higher. The optimal ratio of halloysite nanotubes to aniline was 1 : 2. The effects of adsorption conditions such as pH, mass of HNT@PA-2, time and initial concentration of naproxen were systematically researched. The optimum adsorption for naproxen was pH 9, mass 10 mg and contact time 4 h. The adsorption of naproxen conformed to the pseudo-first-order kinetic model, and the maximum adsorption capacity was 242.58 mg g at 318 K. In addition, the effects of ionic strength and different heavy metals also were studied. Higher ionic strength of the system could influence the adsorption of naproxen. The effects of Al, Pb, Zn and Co ions on the adsorption of naproxen could be ignored, while Cu and Fe ions inhibited the process. The mechanisms for naproxen adsorbed by the HNT@PA-2 were π-π interaction, hydrogen bonding and hydrophobic reaction. Therefore, the HNT@PA-2 could be used for the treatment of medical wastewater for removing naproxen.

摘要

在本研究中，通过聚合反应成功合成了新型吸附剂聚苯胺改性埃洛石纳米管（HNT@PA-2），以增加活性吸附位点。随着苯胺用量的增加，萘普生的吸附容量升高。埃洛石纳米管与苯胺的最佳比例为1∶2。系统研究了pH值、HNT@PA-2质量、时间和萘普生初始浓度等吸附条件的影响。萘普生的最佳吸附条件为pH值9、质量10 mg和接触时间4 h。萘普生的吸附符合准一级动力学模型，在318 K时最大吸附容量为242.58 mg/g。此外，还研究了离子强度和不同重金属的影响。系统较高的离子强度会影响萘普生的吸附。Al、Pb、Zn和Co离子对萘普生吸附的影响可忽略不计，而Cu和Fe离子则抑制该过程。HNT@PA-2对萘普生的吸附机制为π-π相互作用、氢键作用和疏水反应。因此，HNT@PA-2可用于处理含萘普生的医疗废水。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/87e5/10402452/965ebbebbb94/d3ra03671e-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/87e5/10402452/dee0b35b73fa/d3ra03671e-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/87e5/10402452/14b935dfb898/d3ra03671e-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/87e5/10402452/7db3dd757b6b/d3ra03671e-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/87e5/10402452/427106272e1b/d3ra03671e-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/87e5/10402452/d18e25cc5bc2/d3ra03671e-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/87e5/10402452/d8c26cba53fb/d3ra03671e-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/87e5/10402452/c19bd5fb97d0/d3ra03671e-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/87e5/10402452/500560224469/d3ra03671e-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/87e5/10402452/965ebbebbb94/d3ra03671e-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/87e5/10402452/dee0b35b73fa/d3ra03671e-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/87e5/10402452/14b935dfb898/d3ra03671e-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/87e5/10402452/7db3dd757b6b/d3ra03671e-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/87e5/10402452/427106272e1b/d3ra03671e-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/87e5/10402452/d18e25cc5bc2/d3ra03671e-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/87e5/10402452/d8c26cba53fb/d3ra03671e-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/87e5/10402452/c19bd5fb97d0/d3ra03671e-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/87e5/10402452/500560224469/d3ra03671e-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/87e5/10402452/965ebbebbb94/d3ra03671e-f9.jpg

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