石墨烯-纤维素气凝胶构建及对酚类吸附特性

Construction of Three-dimensional Graphene/Cellulose Aerogel and Its Adsorption Properties for Phenolic Pollutants

进出口纺织品包装中辛基酚等酚类污染物严重危害着人类的健康,而吸附法是去除其中酚类污染物的重要方法。石墨烯骨架材料因其高比表面积、丰富的表面基团等在污染物吸附领域具有广泛的应用前景。本文以纤维素为黏结剂,制备了氧化石墨烯-纤维素双网络骨架吸附剂,分析了不同纤维素与石墨烯比例下双网络骨架吸附剂的表面形貌、晶体结构、表面官能团含量以及孔洞结构等变化规律,研究氧化石墨烯与纤维素的含量对骨架吸附剂的结构以及其对辛基酚、壬基酚和苯酚等分类污染物吸附性能的影响机制。对于拓展石墨烯材料在污染物吸附领域的应用具有一定的理论借鉴和实践推广意义。

Phenolic pollutants such as octyl phenol in textiles for export and import seriously endanger human health,and adsorption is an important method to remove phenolic pollutants.Graphene based materials have a wide range of applications in the field of pollutant adsorption due to their high specific surface area and rich surface groups.In this paper,graphene oxidelcellulose double network skeleton adsorbent was prepared with cellulose as binder.The surface morphology,crystal structure,surface functional group content and pore structure of the double network skeleton adsorbent under different cellulose/graphene ratios were analyzed.The effects of the content of graphene oxide and cellulose on the structure of the skeleton adsorbent and its influence mechanism toward the adsorption of octyl phenol,nonyl phenol and phenol were classified.This paper has a certain theoretical reference and practical significance for expanding the application of graphene materials in the field of pollutant adsorption.