（1.State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China） （2.College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, China） （3.Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China） （4.College of Chemistry and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China）
Water is an indispensable source for all forms of life. Due to the deteriorating problem of water resource shortage and pollution caused by uncontrolled and abused usage, Efficient and energy-saving water treatment technique has attracted substantial research attention. In recent years, graphene is acknowledged to be the ideal material for water treatment for its unique two-dimensional structure and excellent physical and chemical properties. Meanwhile, the potential application of graphene in the water treatment field, such as absorption and membrane filtration, has been more and more explored. The present paper reviews the unique structures of graphene and its derivatives and their outstanding performance in water treatment. Then, graphene materials are categorized from a macro dimension, based on their practical application. The preparation method for graphene powder, one-dimensional graphene fiber, two-dimensional graphene membrane and three-dimensional graphene gel are also summarized. Another contribution of this paper is that the current status of the practical application of multi-dimensional graphene material in absorption, capacitive deionization, membrane and microbial fuel cell are summarized in detail. In addition, the problems and challenges encountered during the application of graphene material in water treatment are summarized and the corresponding perspective is also provided.