The photocatalytic conversion of biomass to renewable fuels and chemicals is significant for the sustainable development of energy resources. Herein we report that bimetallic Au-Ru nanoparticles supported on reduced graphene oxides (rGO) exhibit excellent photocatalytic performances for the synthesis of 2,5-diformylfuran (DFF) from partial oxidation of 5-hydroxymethyfurfural (HMF) or one-pot conversion of fructose in the absence of any bases, and the yield of DFF can reach as high as 91% and 86%, respectively. Comparing with rGO-supported monometallic Au or Ru catalysts, the Au-Ru/rGO catalyst shows higher photocatalytic activity due to the transfer of photo-excited electrons from Ru to Au nanoparticles through the conductive graphene support. Since the Au-Ru/rGO catalyst can utilize abundant solar energy, avoid the usage of bases and demonstrate high selectivity and good reusability, the present work provides a green, economical and efficient synthetic route for DFF production.

生物质向可再生燃料和化学物质的光催化转化对于能源的可持续发展具有重要意义。在本文中，我们报道了负载在还原石墨烯氧化物（rGO）上的双金属Au-Ru纳米颗粒表现出优异的光催化性能，用于由5-羟基甲基糠醛（HMF）的部分氧化或果糖的一锅转化来合成2,5-二甲酰呋喃（DFF）在没有任何碱的情况下，DFF的收率可分别高达91％和86％。与rGO负载的单金属Au或Ru催化剂相比，Au-Ru / rGO催化剂显示出更高的光催化活性，这是由于光激发电子通过导电石墨烯载体从Ru转移到Au纳米颗粒。由于Au-Ru / rGO催化剂可以利用大量太阳能，