Titanium dioxide photocatalyst: Present situation and future approaches

Scientific studies on photocatalysis began about three decades ago. Titanium dioxide (TiO2) has emerged as an excellent photocatalyst material for environmental purification. In this brief review, we will explain some fundamental studies on TiO2 photocatalysis, summarize the current commercialization of TiO2-based products, and highlight several points for the future development of TiO2 photocatalysis.