Soudani Nouha, Najar-Souissi Souad, Abderkader-Fernandez Victor K, Ouederni Abdelmottalab
a Research Laboratory of Process Engineering and Industrial Systems, National School of Engineering of Gabes , University of Gabes , Gabès , Tunisia.
b Dpto de Química Inorgánica , Facultad de Ciencias , Granada , Spain.
Environ Technol. 2017 Apr;38(8):956-966. doi: 10.1080/09593330.2016.1214626. Epub 2016 Aug 3.
Nitrogen plasma treatment (NPT) of activated carbon (AC) at different conditions was carried out to introduce nitrogen-containing groups onto olive stone-activated carbon (OSAC) surfaces. Textural characteristics of raw and irradiated samples were analyzed by N and CO adsorption. Surface chemical functional groups were analyzed by X-ray photoelectron spectrometry (XPS) and Fourier Transformed Infrared spectroscopy. The results showed that after NPT, the surface textural properties of irradiated OSAC were slightly damaged, and a gradual decrease in surface area and pore volume was observed during the irradiation. XPS revealed that NPT could change the distribution of oxygen functional groups on the OSAC surface and there were more nitrogen atoms incorporated into the aromatic ring. A tentative explanation for the modification process is proposed. Phenol adsorption was enhanced from 110 mg/g for untreated AC to 635 mg/g for 30-min plasma-treated OSAC.
在不同条件下对活性炭（AC）进行氮等离子体处理（NPT），以将含氮基团引入橄榄石活性炭（OSAC）表面。通过N和CO吸附分析了原始样品和辐照样品的结构特征。通过X射线光电子能谱（XPS）和傅里叶变换红外光谱分析了表面化学官能团。结果表明，NPT后，辐照后的OSAC表面结构性能略有受损，辐照过程中观察到表面积和孔体积逐渐减小。XPS显示，NPT可以改变OSAC表面氧官能团的分布，并且有更多的氮原子掺入芳环中。提出了对改性过程的初步解释。苯酚吸附量从未处理的AC的110 mg/g提高到30分钟等离子体处理的OSAC的635 mg/g。
