Journal
TALANTA
Volume 228, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.talanta.2021.122149
Keywords
Metal-organic frameworks; Magnetic solid-phase extraction (MSPE); Polycyclic aromatic hydrocarbons (PAHs); Adsorbents
Categories
Funding
- National Natural Science Foundation of China [21467028, 21777129]
- Program for Innovative Research Group of Gansu Province, China [1210RJIA001]
- Special fund project for the central government to guide local science and technology development (2020)
- Key Laboratory of Polymer Materials of Gansu Province
- Key Laboratory of Ecological Environment Related Polymer Materials of Ministry of Education
Ask authors/readers for more resources
In this study, a porous cage-like hollow magnetic carbon-doped CoO nanocomposite was synthesized and showed excellent magnetic response and adsorption capacity for the analysis of polycyclic aromatic hydrocarbons. The method using this nanocomposite for solid-phase extraction coupled with HPLC had good RSDs and a satisfying linearity range, with low LOD and LOQ values for the PAHs. The experimental results suggested that the prepared nanocomposite had potential applications for the removal of hazardous pollutants from environmental samples.
In this study, porous cage-like hollow magnetic carbon-doped CoO nanocomposite (CoO@C) was successfully synthesized using a metal-organic frameworks (MOFs) as precursor by one-step calcination method in this work. The obtained nanoporous composite showed excellent magnetic response by taking advantage of the magnetism of CoO even without the Fe3O4, making it an advanced sorbent for magnetic solid-phase extraction (MSPE). The Co-MOF and CoO@C were characterized by XRD, TGA, SEM, TEM, vibrating sample magnetometry, and FT-IR spectroscopy. Based on this, a method using CoO@C for MSPE coupled with HPLC was established for the analysis of nine polycyclic aromatic hydrocarbons (PAHs) from various real water samples. The amount of sorbent, extraction times, extraction temperature, desorption times, oscillation rate, and elution volume were optimized. Under the optimal conditions, the method had good relative standard deviations (RSDs) of 1.1%-6.5% and a satisfying linearity range of 0.5-1000 mu g L-1. The low LOD and LOQ for nine PAHs were found to be 0.06-1.30 mu g L-1 and 0.19-4.30 mu g L-1, respectively. The experimental results indicated that the prepared nanocomposite showed excellent adsorption capacity compared to other commercial sorbents and has potential applications for the removal of hazardous pollutants from environmental samples.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available