In light of the global ecological challenges of the 21st century, the chemical industry is subject to a persistent legal and economic imperative to undergo a fundamental transformation. A substantial impact could be exerted by the substitution of long-standing, conventional chemical processes, with novel, innovative "green" process routes. In an exponentially growing number of studies it is shown that semiconductor photocatalysis is a promising alternative for synthesis of intermediates and synthons. While the majority of industrial applications focuses on wastewater treatment, the photocatalytic reduction of nitrobenzene to aniline using TiO2 as photocatalyst depicts a promising example for applications in synthesis of economically relevant substances. Other noteworthy examples for photocatalytic syntheses of high-value-added molecules include also oxidations such as the oxidation of benzene to phenol or of cyclohexane to cyclohexanol and cyclohexanone. Klicken oder tippen Sie hier, um Text einzugeben.