Samarium Embedded Metal Structure Of The Fullerene And Carbon Nanotubes Angle And Catalytic Properties Of Noble Metal Complexes

The DC arc discharge method was used to synthesize a serious of Sm-containingmetallofullerenes, and the effect of protective gas’s pressure on the yield ofmetallofullerenes was investigated. After extraction with two different methods, theisomer pure samples including Sm@C₈₀, Sm@C₈₂（I-IV）, Sm@C₈₄（I, II）, and Sm@C₈₈（I, II） were obtained by high performance liquid chromatography （HPLC） isolation. TheX-ray single crystal diffraction study proved that the carbon cages of Sm@C₈₂（I-IV）were to be of C_3v, C_s, C₂and C_2vsymmetries, respectively.An [1+2] cycloaddition reaction was conducted on Sm@C₈₂（III） and Sm@C₈₄（I）,and the [1+2] cycloaddition products between Sm-containing metallofullerenes and adiazo precursor were isolated. It was evidenced that the [1+2] cycloaddition products ofSm@C₈₂（III） were formed via a ring opening procedure. In contrast, the [1+2]cycloaddition products of Sm@C₈₄（I） were formed via a ring closing procedure.Single-walled carbon nanohorns （SWCNHs） supported uniform and well dispersedplatinum nanoparticles （Pt NPs） have been successfully prepared by two methods, inwhich4,4-dipydine and ion liquids was used as assistant, respectively. It was shownthat well dispersed nanoparticles with sizes of approximate2.2nm were uniformlydispersed on SWCNHs when the ion liquids assistant was applied. Electrochemicalstudies reveal that the nanocomposites show better electrocatalytic activity for themethanol oxidation than the composites using carbon nanotubes as supporter. Thismethod is promising for the synthesis of high performance catalysts of fuel cells, gasphase catalysis, sensors, etc.