Organic–Inorganic Semiconductor Heterojunction Photocatalysts

With the development of society and the improvement of the economic level, human demand for green energy is increasing day by day. As a kind of abundant renewable energy, solar energy is gradually incorporated into the future energy map [ 1 , 2 ]. Based on the big fever on solar energy and materials technology, there are bright prospects for photocatalysis in the energy chemical industry. The onset of photocatalysis which has attracted great attention from worldwide researchers can be traced back to 1970s. In 1972, Fujishima and Honda discovered that a TiO 2 photoanode could photoelectrochemically split water into H 2 and O 2 [ 3 ]. As a clean technology, it has become one of the key technologies for the conversion of solar energy to chemical energy [ 4 , 5 ]. Particularly, in the last half-century, the application of semiconductor photocatalysts in the environment, energy, nanotechnology, and other fields has been widely and in-depth researched [ 6–8 ]. Presently, photocatalytic materials including organic and inorganic semiconductor materials have been the focus of photocatalytic research.