A novel sulfydryl-functionalized adsorbent PP-g-GMA@MEA for recovery of Ag(I) was synthesized by γ-ray induced simultaneous grafting of glycidyl methacrylate (GMA) onto polypropylene (PP) non-woven fabric, followed by ring-opening processes with mercaptoethylamine (MEA). The obtained adsorbents before and after adsorption of Ag(I) were fully characterized by SEM, EDS, FT-IR spectra, XRD and XPS. Batch adsorption experiments were carried out to evaluate adsorption abilities of the adsorbents under high acidity. The adsorption kinetics of Ag(I) were well fitted with pseudo-second-order kinetics model. The maximum adsorption capacity calculated by the Langmuir isotherm model was 262.51 mg/g at 25 °C. EDS, XRD and XPS analyses confirmed the mechanism of adsorption under high acidity was chelating reaction between -SH and Ag(I) and ion exchange adsorption towards [Ag(NO₃)₂]⁻¹. Through competitive adsorption tests, the PP-g-GMA@MEA was found remarkably selective towards Ag(I) when it coexisted with Cu(II), Co(II), Ni(II) and Cr(III) in high acidity medium. Therefore, the developed PP-g-GMA@MEA composite would be a promising adsorbent for Ag(I) recovery from industrial effluents.

通过γ射线诱导的甲基丙烯酸缩水甘油酯（GMA）同时接枝到聚丙烯（PP）无纺布上，然后开环，合成了一种新型的巯基官能化的吸附剂PP-g-GMA @ MEA，用于回收Ag（I）。巯基乙胺（MEA）的合成过程。通过SEM，EDS，FT-IR，XRD和XPS对Ag（I）的吸附前后吸附剂进行了表征。进行了批量吸附实验，以评估高酸性条件下吸附剂的吸附能力。Ag（I）的吸附动力学与拟二级动力学模型很好地拟合。由Langmuir等温模型计算出的最大吸附容量在25°C下为262.51 mg / g。EDS，₃）₂ ] ^-1。通过竞争性吸附测试，发现PP-g-GMA @ MEA在高酸性介质中与Cu（II），Co（II），Ni（II）和Cr（III）共存时，对Ag（I）具有显着选择性。因此，开发的PP-g-GMA @ MEA复合材料将是从工业废水中回收Ag（I）的有前途的吸附剂。