石墨烯/纤维素杂化材料的制备及应用

Preparation and Application of Graphene/Cellulose Hybrid Materials

杂化材料是由两种或两种以上的组分在纳米或分子级别形成的具有新的功能或性能增强的多组分材料。基于二者的结构特点及存在的相互作用,石墨烯与纳米级纤维素可以杂化,形成具有优异性能的石墨烯/纤维素杂化材料。石墨烯/纤维素杂化材料兼具两组分的优点,如高比表面积、优良的导电性、热稳定性等,也可产生新的功能,如各向异性的导电、导热特性,与其他材料复合时更为优良的分散性等。基于其特性,石墨烯/纤维素杂化材料在能量存储、水处理及传感等领域具有巨大的应用潜力。本文对石墨烯/纤维素杂化材料的制备方法、杂化作用机理(氢键、静电作用及疏水相互作用等)及应用领域进行了介绍,并对石墨烯/纤维素杂化材料未来的发展方向进行了展望。

Hybrid materials are formed by combination of two or more components at least one dimension on the nanometer scale of molecular scale.Hybrid materials have new functionalities or superior properties to the components.Graphene and nanocellulose can be hybridized to form graphene/cellulose hybrid materials with outstanding properties.Graphene/cellulose hybrid materials can combine the advantages of both components,such as high specific surface area,excellent conductivities,and thermal stabilities,which also exhibit new properties,such as anisotropic electrical and thermal conductivities,and improved dispersion when combined with other materials.Given these attributes,graphene/cellulose hybrid materials hold significant potential in various fields,such as energy storage,water treatment,and sensing applications.This review provides an introduction to the preparation methods of graphene/cellulose hybrid materials,the mechanisms of hybridization(hydrogen bonding,electrostatic interactions and hydrophobic interactions),and discusses the future prospects of graphene/cellulose hybrid materials.