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

• Main Authors: Shuyuan Lin, Qilong Li, Yujia Zhong, Jing Li, Xuanliang Zhao, Min Wang, Guoke Zhao, Jialiang Pan, Hongwei Zhu
• Format: Article
• Language: English
• Published: Wiley 2020-01-01
• Series: Global Challenges
• Subjects: coagulation; composites; flocculation; graphene oxide
• Online Access: https://doi.org/10.1002/gch2.201900051

Abstract 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.