Recent advances in the preparation and application of graphene oxide smart response membranes

As a kind of artificial bionic membrane, smart response membrane can respond to the stimulus signals in the environment by the principle of bionic technology. Graphene oxide (GO) has a unique functional group and material structure, which makes it exhibit distinctive performance characteristics in smart response membranes, and smart response membranes prepared by using GO are characterized by highly sensitive response and intelligent tunability. This paper introduces the preparation method, response mechanism, performance characteristics, and application areas of GO-based smart response membranes. The GO-based smart response membranes are classified into physical response and chemical response according to the type of response, where physical response includes light response, temperature response, humidity response, and pressure response, and chemical response includes pH response, molecular/ionic response, and CO gas response. The article highlights the outstanding performance advantages and application examples of various smart response membranes, and discusses two new functional GO-based smart response membranes with self-cleaning and self-repair. Finally, the article comprehensively evaluates the performance of various smart response membranes, and looks forward to the future development of GO smart response membranes, expecting to explore a brighter development direction in this research field and contribute to human life, industrial development, and high-tech progress.