Abstract
In this work, a nanoporous carbon (denoted as Co-NC) with high surface area, large pore volumes, strong magnetic response, and good graphitization degree was prepared using zeolitic imidazole framework (ZIF-67) as both a precursor and a template without any additional carbon source. Scanning electron microscopy, transmission electron microscopy, X-ray diffraction, energy-dispersive X-ray spectroscopy, vibrating sample magnetometer, and N2 adsorption were used to characterize the Co-NC. The Co-NC was explored as the magnetic adsorbent, and its adsorption performance was evaluated by extraction of flunitrazepam from beverage samples. Several experimental parameters affecting the extraction efficiencies were investigated and optimized. The results confirmed that the Co-NC showed an excellent adsorption capacity for flunitrazepam.
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This study was funded by Program of Study Abroad for Young Teachers by Agricultural University of Hebei, NSF Career Award (CHE-1149367), NSF IDBR (CHE-1455554), the National Natural Science Foundation of China (No. 31471643, 31671930), the Natural Science Foundation of Hebei Province (B2016204136, B2017204025), and the Scientific and Technological Research Foundation of the Department of Education of Hebei Province (ZD2016085).
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Qiuhua Wu declares that she has no conflict of interest. Si Cheng declares that she has no conflict of interest. Hao Chen declares that he has no conflict of interest. Chun Wang declares that he has no conflict of interest.
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Wu, Q., Cheng, S., Chen, H. et al. ZIF-67 Templated Synthesis of Nanoporous Carbon as an Efficient Adsorbent for Preconcentration of Flunitrazepam from Beverage Samples. Food Anal. Methods 10, 2772–2780 (2017). https://doi.org/10.1007/s12161-017-0846-x
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DOI: https://doi.org/10.1007/s12161-017-0846-x