Catalytic oxidation conversion of biomass-derived resource to high value-added products has evoked considerable interest. Herein, we report a Pt atomic clusters catalyst (size: 1.3 nm) supported on rehydrated layered double hydroxides (denoted as Pt/re-Mg₄Al-LDHs), which exhibits great catalytic behavior towards selective oxidation reaction of furfural to furoic acid (conversion: 99%; yield: 97%; reaction rate: 676.57 mmol g_Pt⁻¹ h⁻¹). This result stands at the highest standard compared with reported Pt-based catalysts. A combination research confirms the formation of surface Pt^δ− species, due to the local electron transfer from support to Pt atomic clusters. LDHs provide a confined effect to achieve tunable size and highly-stabilized metal clusters, which imposes influence on catalytic performance via metal-support interactions. Both experimental methods (In situ DRIFTS, Raman, EPR and Isotope Labelling MS) and theoretical calculations reveal that the negatively-charged Pt active site plays a crucial role in determining catalytic behavior: C = O bond undergoes activation adsorption on Pt^δ− site, followed by reaction with H₂O (Aldehyde-Water Shift); subsequently, oxygen is activated to generate reactive oxide species (O₂⁻) that serves as a hydrogen acceptor (Oxidative Dehydrogenation) to produce furoic acid. This work displays a valuable paradigm for preparation of noble metal atomic clusters catalysts based on memory effect of LDHs support, which would pave a way for the development of heterogeneous catalysts toward selective oxidation reactions.

源自生物质的资源到高附加值产品的催化氧化转化引起了人们的极大兴趣。在本文中，我们报道了负载在复水层状双氢氧化物（表示为Pt / re-Mg ₄ Al-LDHs）上的Pt原子簇催化剂（尺寸：1.3 nm ），该催化剂对糠醛向糠酸的选择性氧化反应表现出很大的催化行为（转化率：99％；产率：97％；反应速率：676.57mmol g _Pt ^-1  h ^-1）。与报道的基于Pt的催化剂相比，该结果达到了最高标准。结合研究证实铂表面的形成^{δ -}物种，由于局部电子从支持物转移到Pt原子团簇。LDH提供有限的效果，以实现可调节的尺寸和高度稳定的金属簇，这通过金属与载体的相互作用对催化性能产生影响。两个实验方法（原位DRIFTS，拉曼，EPR和同位素标记MS）和理论计算表明，带负电荷的铂的活性位点在决定催化行为至关重要的作用：在Pt C = O键经受活化吸附^{δ -}位点，然后与H ₂ O（醛-水变换）反应；随后，氧被激活以产生反应性物种氧化物（O ₂ ^-）用作氢受体（氧化脱氢）以生产糠酸。这项工作展示了基于LDHs载体的记忆效应制备贵金属原子簇催化剂的有价值的范例，这将为异构催化剂向选择性氧化反应的发展铺平道路。