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用于罗丹明B磁吸附的氧化石墨烯-银功能化FeO@CS复合材料的设计

Design of GO-Ag-functionalized FeO@CS composite for magnetic adsorption of rhodamine B.

作者信息

Xu Lili, Suo Hongbo, Liu Renmin, Liu Houmei, Qiu Hongdeng

机构信息

School of Pharmacy, Liaocheng University Liaocheng Shandong 252059 China.

School of Pharmaceutical Sciences, Shandong University Jinan Shandong 250012 China

出版信息

RSC Adv. 2019 Sep 23;9(52):30125-30133. doi: 10.1039/c9ra04897a.

DOI:10.1039/c9ra04897a
PMID:35530204
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9072105/
Abstract

In this study, a novel magnetic composite (FeO@CS/GO/Ag) modified with chitosan (CS), graphene oxide (GO) and Ag nanoparticles (Ag NPs) was successfully prepared as an efficient adsorbent for detection of rhodamine B (RB) combined with a fluorescence technique. The properties of the magnetic composite were confirmed by field emission scanning electron microscopy, energy dispersive X-ray spectroscopy, and vibrating sample magnetometry. The components of FeO@CS/GO/Ag endowed it with excellent extraction performance and convenient operation. The main parameters affecting extraction and desorption efficiency were all investigated systematically. Under the optimized experimental conditions, the proposed method showed linear ranges (0.2-6.0 μg L) with = 0.9992. The limits of detection (LODs) and quantification (LOQs) were 0.05 and 0.2 μg L ( = 3), respectively. FeO@CS/GO/Ag exhibited outstanding extraction efficiency for RB, compared with CS-coated FeO nanoparticles (FeO@CS) and GO-modified FeO@CS (FeO@CS/GO). The applicability of the proposed method was investigated by analyzing four real samples (waste water, soft drink, shampoo, and red pencil) and the spiked recoveries ranged between 94% and 97% with RSD ranging from 3% to 6%, which showed that the proposed method had satisfactory practicability and operability.

摘要

在本研究中，成功制备了一种用壳聚糖（CS）、氧化石墨烯（GO）和银纳米颗粒（Ag NPs）改性的新型磁性复合材料（FeO@CS/GO/Ag），作为结合荧光技术检测罗丹明B（RB）的高效吸附剂。通过场发射扫描电子显微镜、能量色散X射线光谱和振动样品磁强计对磁性复合材料的性能进行了确认。FeO@CS/GO/Ag的成分赋予了它优异的萃取性能和便捷的操作。系统研究了影响萃取和解吸效率的主要参数。在优化的实验条件下，该方法的线性范围为（0.2 - 6.0 μg L），相关系数r = 0.9992。检测限（LODs）和定量限（LOQs）分别为0.05和0.2 μg L（n = 3）。与壳聚糖包覆的FeO纳米颗粒（FeO@CS）和GO改性的FeO@CS（FeO@CS/GO）相比，FeO@CS/GO/Ag对RB表现出出色 的萃取效率。通过分析四个实际样品（废水、软饮料、洗发水和红铅笔）研究了该方法的适用性，加标回收率在94%至97%之间，相对标准偏差（RSD）在3%至6%之间，表明该方法具有令人满意的实用性和可操作性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/82ef/9072105/05cab688f08e/c9ra04897a-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/82ef/9072105/42fd9c125eff/c9ra04897a-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/82ef/9072105/81ec83dea6f9/c9ra04897a-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/82ef/9072105/3b4615522a54/c9ra04897a-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/82ef/9072105/8fe19df7f06d/c9ra04897a-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/82ef/9072105/0f28db236f75/c9ra04897a-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/82ef/9072105/05cab688f08e/c9ra04897a-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/82ef/9072105/42fd9c125eff/c9ra04897a-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/82ef/9072105/81ec83dea6f9/c9ra04897a-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/82ef/9072105/3b4615522a54/c9ra04897a-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/82ef/9072105/8fe19df7f06d/c9ra04897a-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/82ef/9072105/0f28db236f75/c9ra04897a-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/82ef/9072105/05cab688f08e/c9ra04897a-f6.jpg

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