Ni Chuyi, Huang Junlong, Xie Xintong, Shi Yueru, Zheng Juan, Ouyang Gangfeng
MOE Key Laboratory of Aquatic Product Safety/KLGHEI of Environment and Energy Chemistry, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, China.
MOE Key Laboratory of Aquatic Product Safety/KLGHEI of Environment and Energy Chemistry, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, China; Guangdong Provincial Key Laboratory of Emergency Test ForDangerous Chemicals, Guangdong Institute of Analysis (China National Analytical Center Guangzhou), Guangzhou, 510070, China.
Anal Chim Acta. 2019 Sep 6;1070:43-50. doi: 10.1016/j.aca.2019.04.027. Epub 2019 Apr 26.
Ordered mesoporous carbons (OMCs) are a kind of remarkable adsorbents in environment area due to high surface area, controllable pore size and superior stability. However, the inherent hydrophobicity and strong π-π interaction make OMCs have an advantage for the adsorption of nonpolar pollutants, leading to great demands for the development of new-type OMCs with outstanding adsorption efficiencies towards polar pollutants. The zirconium and nitrogen co-doped ordered mesoporous carbon (Zr/N-OMC) was obtained by directly carbonizing the composites of phenolic resin and UiO-66-NH, with uniform mesopore structure, large surface area (583 m g) and widely dispersed heteroatoms. Due to these prominent properties, the Zr/N-OMC was fabricated as high-performance solid phase microextraction coating. The results proved that the doping zirconium and nitrogen could act as active sites to interact with polar pollutants, resulting in fast adsorption rate and enhanced adsorption capacity. Therefore, the high-performance Zr/N-OMC-coated fiber was coupled with gas chromatography-mass spectrometry to establish sensitive analytical method for the detection of trace phenols from real water samples. This work would open up a new avenue for simple and efficient modification of OMC with enhanced adsorption performance to expand applications.
有序介孔碳（OMCs）由于具有高比表面积、可控孔径和优异稳定性，是环境领域一类卓越的吸附剂。然而，其固有的疏水性和强烈的π-π相互作用使OMCs在吸附非极性污染物方面具有优势，这导致对开发对极性污染物具有出色吸附效率的新型OMCs有很大需求。通过直接碳化酚醛树脂和UiO-66-NH的复合材料获得了锆和氮共掺杂的有序介孔碳（Zr/N-OMC），其具有均匀的介孔结构、大比表面积（583 m²/g）和广泛分散的杂原子。由于这些突出性能，Zr/N-OMC被制备成高性能固相微萃取涂层。结果表明，掺杂的锆和氮可作为活性位点与极性污染物相互作用，从而实现快速吸附速率和增强的吸附容量。因此，将高性能Zr/N-OMC涂层纤维与气相色谱-质谱联用，建立了检测实际水样中痕量酚类的灵敏分析方法。这项工作将为简单高效地改性OMC以增强吸附性能从而拓展应用开辟一条新途径。
