Ru8@NU-1000 as difunctional photocatalysts for visible-light-driven efficient CO2 reduction integrated with furfurylamine oxidation

The high efficiencies of CO 2 reduction coupled with furfurylamine oxidation through bifunctional catalysts Ru 8 @NU-1000, which fully utilize photogenerated electrons and holes, improving the efficiency of solar energy conversion. • Constructing a dual functional catalyst Ru 8 @NU-1000 to improve solar energy conversion efficiency. • Ru 8 @NU-1000 combine the superior catalytic activity of soluble POM catalyst and recyclability of the porous substrates. • Highly efficient perform CO 2 reduction coupled with furfurylamine oxidation with high selectivity. • Gas and liquid products are generated separately, which can be spontaneously separated from the photocatalytic system. The CO 2 reduction coupled with organic oxidation driven by solar energy to valuable chemical fuels is considered a potent approach for tackling contemporary energy and environmental issues. However, it is difficult to design both a dual functional photocatalyst and constructed overall reaction systems simultaneously. In this work, NU-1000′s micropores (12 Å) and mesopores (34 Å) can effectively accommodate Ru 8 guest molecules (1 nm), so we employ a mature impregnation method by incorporating Ru 8 into the pores of NU-1000 constructed a difunctional Ru 8 @NU-1000 photocatalyst and improve the efficiency of CO 2 reduction and furfurylamine oxidation with high selectivity. The yields of CO and N-Furfurylidenefurfurylamine (NF) are 2596 and 11408 μmol g -1 h −1 respectively, showing a significantly greater amount of production than known similar studies. This catalytic system demonstrates long-term recyclability and stability by consecutive cycles experiment combine with characterization methods. A range of photochemical and spectroscopic studies verified the proposed photocatalytic mechanism. The utilization of Ru 8 @NU-1000 in CO 2 -furfurylamine photoredox reaction provides an overall reaction strategy to obtain two meaningful products at the same time, and also improves energy conversion efficiency and solar energy utilization, thereby promoting the development of green energy.