期刊
CARBON
卷 204, 期 -, 页码 94-101出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2022.12.058
关键词
rGO; CNC aerogel; Structural regulation; Solid-phase microextraction; Gas chromatography-mass spectrometry; Polycyclic aromatic hydrocarbons
The ultra-loose and lightweight rGO/CNC hybrid aerogel with tunable dimensions was developed by hydrothermal method. The hybrid aerogel exhibited excellent performance for capturing organic pollutants due to its ample functional groups, ultra-loose structure, and abundant micro/meso-pores. As a solid-phase microextraction coating, the rGO/CNC composites demonstrated superior extraction capacities for PAHs with good linearity, low limits of detections, and excellent reproducibility.
The ultra-loose and lightweight reduced graphene oxide/cellulose nanocrystal (rGO/CNC) hybrid aerogel was developed by hydrothermal method. Owing to the dispersibility and plentiful chemical groups of CNC, a variety of rGO/CNC hybrid aerogels with tunable dimensions were formed, thereby overcoming the limitation of size control of rGO aerogels by hydrothermal treatment. Moreover, rGO/CNC hybrid aerogel was endowed with ample functional groups, ultra-loose structure, and abundant micro/meso-pores, which allowed the composite exhibit excellent performance for capturing organic pollutants. With the use as solid-phase microextraction (SPME) coating to extract and determine polycyclic aromatic hydrocarbons (PAHs), the rGO/CNC composites presented superior extraction capacities for PAHs than pristine rGO and commercial SPME coatings due to the synergistic effects of 7C-7C stacking, chemical groups bonding, and fast internal transfer in thick rGO/CNC layers. The proposed analytical method presented good linearity (R2 <= 0.9988) in concentration of 0.1-2000 ng L-1, low limits of detections (0.012-0.076 ng L-1), and excellent reproducibility. Finally, the proposed method was applied to determine PAHs from real water, and obtained satisfactory recoveries. This study proposed a novel method for regulating rGO aerogel structures, and confirmed its effectiveness for efficiently capturing organic pollutants from water.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据