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Cross-Linked Double Network Graphene Oxide/Polymer Composites for Efficient Coagulation-Flocculation.

Shuyuan LinQilong LiYujia ZhongJing LiXuanliang ZhaoMin WangGuoke ZhaoJialiang PanHongwei Zhu
Published in: Global challenges (Hoboken, NJ) (2019)
Hybrid coagulant/flocculant consisting of nanomaterials have tremendous potential in solid-liquid separation and can be applied to the coagulation-flocculation-sedimentation process of water treatment. In this work, inspired by the mineralization in nature, a graphene oxide/polymer-based hybrid coagulant/flocculant that precipitates large-scale, multicomponent (e.g., dyes, heavy metal ions, and nanoparticles) and complex pollutants simultaneously at room temperature by forming double-network hydrogel through bioinspired Ca2+ crosslinking, is developed for the purification of wastewater. The coagulation-flocculation-sedimentation method developed here also provides a novel strategy for the preparation of macroscopic assemblies of multicomponents that can be applied to various application fields.
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