Tuning Catalytic Selectivity in Cascade Reactions by Light Irradiation
Selectivity of cascade redox reactions: the reduction of nitrobenzene to azoxybenzene and then to azobenzene and the oxidation of benzyl alcohol to benzaldehyde and then to benzoic acid, is discovered to be tuneable via light irradiation over plasmonic gold photocatalysts. The representative photocatalyst of Au/CeO2 was characterized by TEM, EDX, UV–Vis and XPS to determine its morphology, elemental composition, photo absorptivity and oxidation state of gold. The catalytic test results demonstrate that the net contribution of light irradiation correlates with the ability of incident light to excite electrons and light absorption of catalysts. These findings may inspire peer researchers in developing new photocatalytic processes or in designing new photocatalysts for clean chemicals synthesis.
KeywordsPhotocatalysis Nanoparticles Aromatic compounds Selectivity regulation Plasmonic effect
We thank the National Natural Science Foundation of China (NNSFC 21706134), the Young Natural Science Foundation of Jiangsu province (BK20170918) and Natural Science Key Project of the Jiangsu Higher Education Institutions (15KJA220001) for financial support.