Centre for Advanced Materials, Indian Association for the Cultivation of Science, Kolkata-700032, India.
Chem Asian J. 2013 Apr;8(4):786-91. doi: 10.1002/asia.201201084. Epub 2013 Feb 7.
Graphene is a 2D sp(2)-hybridized carbon sheet and an ideal material for the adsorption-based separation of organic pollutants. However, such potential applications of graphene are largely limited, owing to their poor solubility and extensive aggregation properties through graphene-graphene interactions. Herein, we report the synthesis of graphene-based composites with γ-Fe2O3 nanoparticle for the high-performance removal of endocrine-disrupting compounds (EDC) from water. The γ-Fe2O3 nanoparticles partially inhibit these graphene-graphene interactions and offer water dispersibility of the composite without compromising much of the high surface area of graphene. In their dispersed form, the graphene component offers the efficient adsorption of EDC, whilst the magnetic iron-oxide component offers easier magnetic separation of adsorbed EDC.
石墨烯是一种二维 sp(2)杂化的碳原子片，是一种理想的吸附基有机污染物分离材料。然而，由于石墨烯之间的相互作用导致其较差的溶解性和广泛的聚集特性，石墨烯的这些潜在应用受到了很大限制。在此，我们报告了具有 γ-Fe2O3 纳米粒子的石墨烯基复合材料的合成，该复合材料可用于从水中高效去除内分泌干扰化合物 (EDC)。γ-Fe2O3 纳米粒子部分抑制了这些石墨烯-石墨烯相互作用，并赋予了复合材料的水分散性，而不会大大降低石墨烯的高表面积。在分散状态下，石墨烯组分提供了 EDC 的有效吸附，而磁性氧化铁组分则提供了更方便的吸附 EDC 的磁性分离。
