The deliberate and precise fabrication of supported catalysts with well-defined structures has been a long-standing pursuit.Among the large number of supports for anchoring noble metal species,layered double hydroxide...The deliberate and precise fabrication of supported catalysts with well-defined structures has been a long-standing pursuit.Among the large number of supports for anchoring noble metal species,layered double hydroxides(LDHs)stand out as a class of ideal supports for dispersing noble metal species due to their uniform distribution of metal sites and charge centers.However,a prerequisite for the investigation of noble metals-loaded LDHs is the construction of well-defined active sites and precisely controlled sizes of noble metal species on LDH surfaces.Based on research advances made over the past decade,we provide a detailed discussion on the fine regulation of noble metal species,including single atoms,nanoclusters,nanoparticles,and multi-site catalysts on LDHs.Furthermore,we focus on uncovering three critical aspects of noble metal-loaded LDHs:the precise location,the atomic configurations,and the interaction with the LDHs.Building upon these well-defined structures,we further clarify the structure-activity relationships of the developed materials in reactions such as hydrazine decomposition,biomass conversion,C–H bond activation,and water splitting,etc.Finally,the challenges and future directions are outlined to offer valuable insights for advancing high-activity noble metal-loaded LDHs.展开更多
基金supported by the National Natural Science Foundation of China(22178019,22208013,22288102)the Fundamental Research Funds for the Central Universities(XK1802-6,XK1803-05,XK1902)。
文摘The deliberate and precise fabrication of supported catalysts with well-defined structures has been a long-standing pursuit.Among the large number of supports for anchoring noble metal species,layered double hydroxides(LDHs)stand out as a class of ideal supports for dispersing noble metal species due to their uniform distribution of metal sites and charge centers.However,a prerequisite for the investigation of noble metals-loaded LDHs is the construction of well-defined active sites and precisely controlled sizes of noble metal species on LDH surfaces.Based on research advances made over the past decade,we provide a detailed discussion on the fine regulation of noble metal species,including single atoms,nanoclusters,nanoparticles,and multi-site catalysts on LDHs.Furthermore,we focus on uncovering three critical aspects of noble metal-loaded LDHs:the precise location,the atomic configurations,and the interaction with the LDHs.Building upon these well-defined structures,we further clarify the structure-activity relationships of the developed materials in reactions such as hydrazine decomposition,biomass conversion,C–H bond activation,and water splitting,etc.Finally,the challenges and future directions are outlined to offer valuable insights for advancing high-activity noble metal-loaded LDHs.
