Combining semiconductors and carbon to form composite materials is expected to solve these problems to a certain extent, so these photocatalytic materials are worth exploring. At present, carbon materials including graphite, carbon black, activated carbon, carbon fibers, carbon nanotubes (CNTs), and fullerenes [12,13] have been combined with semiconductors. Graphene (abbreviated as GR) is another type of carbon material, and is composed of a single layer of sp2‐bonded carbon atoms, as shown in the scanning electron microscope (SEM) image and schematic diagram in Fig. 1. The basic construction unit of GR is the stable benzene ring with a monolayer thickness of 0.35 nm [14]. GR is the basic unit in numerous carbon materials including graphite, CNTs, and fullerenes [15–17]. Compared with CNTs and fullerenes, GR has higher conductivity and chemical stability, and improved mechanical properties. Furthermore, the unique two‐dimensional planar structure and high specific surface of GR mean that it shows great potential as a carrier and multifunctional material for transferring