University Centre of Defence At the Spanish Air Force Academy, MDE-UPCT, C/Coronel López Peña S/N, Santiago de La Ribera, 30720, Murcia, Spain.
Sci Rep. 2020 Oct 26;10(1):18288. doi: 10.1038/s41598-020-75223-1.
In this work we present a novel procedure for ibuprofen adsorption from waters employing magnetic core-modified silver nanoparticles. We demonstrate that 93% adsorption of ibuprofen is achieved in 45 min by means of a simple method, for neutral pH and room temperature, also using a low dose of adsorbent, equal to 7 mg in 500 µL of suspension. The characterization of the adsorbent, before and after adsorption, was carried out by means of field emission scanning electron microscopy, energy dispersive X-ray spectroscopy, BET analysis, Fourier-transform infrared spectroscopy and differential scanning calorimetry. It is worth pointing out that ibuprofen can be desorbed and the adsorbent can be reused, remaining unaltered for the first three cycles, and showing 89.3% adsorption efficiency after the third regeneration. A three-parameter model and the Langmuir isotherm characterize the kinetics and isotherm of adsorption.
在这项工作中，我们提出了一种从水中吸附布洛芬的新方法，即使用磁性核修饰的银纳米粒子。我们证明，在中性 pH 值和室温下，通过简单的方法，使用低剂量的吸附剂（7mg 在 500µL 悬浮液中），在 45 分钟内可以实现 93%的布洛芬吸附。吸附前后的吸附剂通过场发射扫描电子显微镜、能谱分析、BET 分析、傅里叶变换红外光谱和差示扫描量热法进行了表征。值得指出的是，布洛芬可以被解吸，吸附剂可以重复使用，在前三个循环中保持不变，并且在第三次再生后仍然具有 89.3%的吸附效率。一个三参数模型和朗缪尔等温线描述了吸附的动力学和等温线。
