Halogen modified organic porous semiconductors in photocatalysis: mechanism, synthesis, and application

Photocatalysis is considered as the promising energy conversion way to resolve the issues of energy crisis and environmental pollution. As the key point of the photocatalysis, the photocatalyst determines the final conversion efficiency from solar, therefore, the composition and photoelectronic nature of which deserve to be valued. Halogen often affects immensely the intrinsic electron configuration of the matrix because of electrophilic property, and thus its topic has attracted lots of attention for photocatalytic application. In this review, halogen-contained organic porous semiconductors are discussed in detailed. Firstly, the role of halogens in photocatalysis based on organic porous semiconductors are categorized. Then, the way to introduce the halogens into organic porous semiconductors and their applications in photocatalysis are reviewed. At last, the outlooks are given at the end of this paper. This review would bring new insights into the non-metal doping engineering for improving the photocatalytic performance of organic semiconductors.