A novel thermo-sensitive adsorbent based on magnetic graphene oxide/allylamine/N-vinylcaprolactam was synthesized and employed to removal of anthracene from an aqueous solution and determined through a high-performance liquid chromatography-ultraviolet detector. The surface properties of the adsorbent were characterized through scanning electron microscope, Fourier transform infrared spectrophotometer, vibrating sample magnetometer, X-ray diffraction, and thermogravimetric analysis. The effect of several factors on the adsorptive performances of adsorbent was carefully evaluated by the batch sorption studies. The removal performance of anthracene was also detected at approximately 98% by 0.01 g of nanoadsorbent within 30 min when the anthracene concentration at pH ~ 6 was up to 10 mg L⁻¹. The relative standard deviation (for n = 3) was 1.17% at the spiked anthracene level of 1 mg L⁻¹. The isotherm and kinetic adsorption models suggested that the procedure perfectly conformed to Langmuir and pseudo-second-order models, respectively. Furthermore, the adsorbent could be reused for ten cycles for anthracene with a minor loss of adsorption capacity. Predictably, this thermo-sensitive adsorbent with high sorption efficiency provided a potential process for the removal of anthracene in seawater samples.

Graphical Abstract

中文翻译：

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使用基于磁性氧化石墨烯的热敏聚合物有效去除海水样品中的蒽：制造和表征

合成了一种基于磁性氧化石墨烯/烯丙胺/N-乙烯基己内酰胺的新型热敏吸附剂，用于去除水溶液中的蒽，并通过高效液相色谱-紫外检测器进行测定。通过扫描电子显微镜、傅里叶变换红外分光光度计、振动样品磁强计、X射线衍射和热重分析等手段对吸附剂的表面性质进行了表征。通过批量吸附研究仔细评估了几个因素对吸附剂吸附性能的影响。^{当pH~6下的蒽浓度高达10 mg L -1}时，0.01 g纳米吸附剂在30 min内对蒽的去除性能也达到约98% 。^{在1 mg L -1} 的蒽加标水平下，相对标准偏差（n = 3）为1.17% 。等温线和动力学吸附模型表明该过程分别完全符合 Langmuir 和伪二阶模型。此外，吸附剂可以对蒽重复使用十次循环，吸附能力损失很小。可以预见的是，这种具有高吸附效率的热敏吸附剂为去除海水样品中的蒽提供了潜在的方法。

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