Highly Selective Photocatalytic Conversion of CO2 by Water over Ag-modified SrNb2O6 Nanorod

摘要

The photocatalytic conversion of CO2 into other valuable chemical compounds (so-called "artificial photosynthesis") has attracted enormous attention as a sustainable strategy. Several studies have been devoted to semiconductor-based photocatalytic conversion of CO2 by H2O as an electron donor, such as ALa4Ti4O_(15)(A = Ca, Sr, and Ba), ZnGa2O4/Ga2O3, which showed relatively high selectivity toward CO evolution under UV irradiation. Niobium-based semiconductors have been reported as effective photocatalysts for water splitting. We expect to develop new niobium-based semiconductors with high activity and selectivity for the photocatalytic conversion of CO2 by H2O. In this work, we fabricated SrNb2O6 nanorod and Sr2Nb2O7 nanoflake by a flux method and investigated the effect of fabrication conditions on the photocatalytic activity and selectivity for the photocatalytic conversion of CO2 by H2O.