The selective oxidation of 5-hydroxyfurfural (HMF) into the corresponding aldehyde is one of the key reactions in the production of chemical products. Here, we prepared the MXene/g-C₃N₄ composite (MX/CN) for photocatalytic selective oxidation of HMF into 2,5-diformylfuran (DFF). At the mild reaction conditions, both DFF selectivity and yield can reach up to ≥ 90% over 6% MX/CN. In addition, the MX/CN also shows high activity for selective oxidation of other non-aromatic and aromatic alcohols. Moreover, the reaction conditions are surveyed and the mechanism has been studied. This study provides a way for HMF conversion under mild conditions.

将5-羟基糠醛（HMF）选择性氧化为相应的醛是化学产品生产中的关键反应之一。在这里，我们准备了MXene / gC ₃ N ₄复合材料（MX / CN），用于将HMF光催化选择性氧化为2,5-二甲酰呋喃（DFF）。在温和的反应条件下，相对于6％的MX / CN，DFF的选择性和收率均可达到≥90％。另外，MX / CN对其他非芳族和芳族醇的选择性氧化也显示出高活性。此外，调查了反应条件并研究了机理。这项研究为温和条件下的HMF转化提供了一种方法。