Abstract Firstly, polystyrene (PS)-grafted silica (SiO2) particles were prepared by means of “grafting from”, and then chloromethylated with 1,4-dichloromethoxybutane to obtain chloromethylstyrene (CMPS)-grafted particles CMPS/SiO2. Finally, salicylhydroxamic acid (SHA) was bonded to CMPS/SiO2 particles by nucleophilic substitution reaction, so as to prepare SHA-functionalized adsorption materials SHA-PS/SiO2. The adsorption characteristics of them for quercetin are studied in depth by using static and dynamic methods, and the adsorption thermodynamics is investigated. The experimental results show that SHA-PS/SiO2 has good adsorption properties for quercetin with a very great adsorption capacity (1.5 mmol/g) due to the synergy of various interactions between SHA-PS/SiO2 and quercetin, such as π–π stack, π-type hydrogen bond, conventional hydrogen bond and hydrophobic interaction. The adsorption isotherm data matches the Langmuir model. The adsorption process of SHA-PS/SiO2 toward quercetin is exothermic and driven by enthalpy. Besides, the adsorption materials still have good reusability.

中文翻译：

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水杨基异羟肟酸官能化聚苯乙烯接枝SiO2颗粒对槲皮素的吸附性能

摘要 首先通过“接枝自”制备聚苯乙烯（PS）接枝二氧化硅（SiO2）粒子，然后用1,4-二氯甲氧基丁烷进行氯甲基化，得到氯甲基苯乙烯（CMPS）接枝粒子CMPS/SiO2。最后，通过亲核取代反应将水杨基异羟肟酸（SHA）键合到CMPS/SiO2颗粒上，制备出SHA功能化吸附材料SHA-PS/SiO2。采用静态和动态方法深入研究了它们对槲皮素的吸附特性，并研究了吸附热力学。实验结果表明，SHA-PS/SiO2 对槲皮素具有良好的吸附性能，由于 SHA-PS/SiO2 与槲皮素之间的各种相互作用的协同作用，例如 π-π 堆积，具有非常大的吸附容量（1.5 mmol/g） , π型氢键, 常规的氢键和疏水相互作用。吸附等温线数据符合朗缪尔模型。SHA-PS/SiO2 对槲皮素的吸附过程是放热的，由焓驱动。此外，吸附材料仍具有良好的重复使用性。