Abstract
Photocatalysis has been regarded as one of the promising approaches to solve environmental problems. Three-dimensional graphene aerogel (3D GA) is a novel photocatalytic material with unique porous structure and excellent intrinsic properties, which has been used as a catalyst to support and enhance the catalytic activity of semiconductor. Here, the typical synthesis methods of 3D GA were summarized, such as hydrothermal, chemical vapor deposition, and chemical oxidation, etc. Furthermore, the application of 3D GA based photocatalyst in the degradation of organic pollutants is reviewed, especially different 3D GA based composite materials and their degradation ability on organic dyes in wastewater as well as their biohazard in the ecosystems is critically discussed. In addition, we discuss the challenges for large scale preparations of 3D GA and further improvement for the degradation efficiency. It is expected that this review would be helpful for designing of highly efficient 3D GA based photocatalyst composites.