Bi Hengchang

Preparation of graphene-MoS 2 hybrid aerogels as multifunctional sorbents for water remediation

The increasing demand of clean water and effective way to recycle industrial wastewater has offered a new application for carbon-based three-dimensional (3D) porous networks as sorbents due to their superior sorption abilities. Through the surface modification and hybridization with functional materials, the physical and chemical properties of the 3D carbon-based materials can be engineered. In this work, graphene-MoS2 aerogels (GMAs) with bulky shape are synthesized via a one-pot hydrothermal method. The obtained GMAs show quick sorption rate and high sorption capacity towards a wide variety of contaminants. The sorption covers not only organic solvents or organic dyes, but also toxic heavy metals ions such as Hg2+ and Pb2+. More importantly, the sorption capacity towards metal ions can be optimized by simply changing the loading amount of MoS2.摘要三维碳基多孔材料因其独特的结掏和超高的吸附性能, 已成为最有水污染处理应用前景的吸附材料之一. 本文通过有效的调控, 合成了多种具有不同孔道结掏和成分组成的石墨烯-二硫化钼复合气凝胶材料. 这种材料在吸附重金属离子, 有机染料, 油及有机溶剂方面都有很多优异的表现. 通过调控二硫化钼的比例, 可以有效改善材料的吸附性能. 得益于此, 其吸附重金属汞离子的效率可以达到 1245mg g−1.