Artificial photosynthesis using LiNbO3 as a photocatalyst has emerged as an important technology leading to the formation of eco-friendly end products. An interesting part of this technology is its ability to directly convert pollutants into the harmless substances in the contaminant source. This technology possesses enormous potential for the reduction of "global warming." This article reviews recent developments and future potential applications of this emerging technology and provides information on the parameters that control its process. The effects of the photosynthetic reaction of LiNbO3 on cementations materials and indoor air conditioning are also reviewed in this article.