Preparation of a Fe3O4-Au-GO nanocomposite for simultaneous treatment of oil/water separation and dye decomposition
Preparation of a Fe3O4-Au-GO nanocomposite for simultaneous treatment of oil/water separation and dye decomposition
复制标题
Fe3O4-Au-GO纳米复合材料的制备用于同时处理油水分离和染料分解
DOI：
10.1039/c6nr05633d
复制
发表时间：
2016
期刊：
影响因子：
6.7
通讯作者：
Sun Hong-Bo
中科院分区：
文献类型：
--
作者：
Wang Ying-Shuai;Wang Yan;Xia Hong;Wang Gong;Zhang Zhen-Yu;Han Dong-Dong;Lv Chao;Feng Jing;Sun Hong-Bo
制备了一种可同时控制多种水污染物(可溶有机染料和难溶化学溶剂)的纳米复合材料。通过光还原和共价键合的方法在氧化石墨烯(GO)表面修饰了Au和Fe3O4纳米粒子。得到的Fe3O4-Au-GO纳米复合材料具有磁驱动能力和催化应用。纳米复合材料中包裹了不溶性和挥发性有机溶剂后，可以形成乳状液；而且，多层石墨烯外壳结构可以延缓溶剂的挥发，确保Fe3O4-Au-GO纳米复合材料有效且完全地收集油滴。同时，复合材料表面的Au纳米粒子可以有效地催化有机染料在水中的分解，利用外加磁场也可以实现纳米复合催化剂的回收。利用Fe3O4-Au-GO纳米复合材料可以实现水中难溶油(有机溶剂)和有机染料的同时处理。因此，在对GO进行表面改性的基础上，实现了一种具有两种水污染处理功能的材料。这为同时处理油分离和染料分解提供了一条新的途径，组装后的结构可能会产生乳状液，在燃料电池等领域有新的应用。
A nanocomposite capable of simultaneously controlling multiple water pollutants (soluble organic dye and insoluble chemical solvent) has been obtained. The Au and Fe3O4 nanoparticles (NPs) were modified on a graphene oxide (GO) surface via light reduction and covalent attachment. The obtained Fe3O4–Au–GO nanocomposite has magnetic driving ability and catalytic applications. The nanocomposite can form emulsions after wrapping an insoluble and volatile organic solvent inside; moreover, the multi-layer graphene shell structure may delay volatilization of the solvent, ensuring that the oil droplets are collected efficiently and completely by the Fe3O4–Au–GO nanocomposite. At the same time, the Au NPs on the surface of the composite can effectively catalyze the decomposition of an organic dye in water and the recovery of the nanocomposite catalyst can also be realized using an external magnetic field. The simultaneous treatment of non-soluble oil (organic solvents) and organic dyes in water can be realized by the Fe3O4–Au–GO nanocomposite. Therefore, based on surface modification of GO, one material with two types of water pollution treatment functions was realized. This provides a new way for the simultaneous treatment of oil separation and dye decomposition, and the assembled structure may result in emulsions to give new applications in fuel cells and other fields.