KCS

Nanocrystals consisting of two or more different inorganic domain have attracted for their fused properties at a nano-scale interface area, so synthesis of HNCs(Heterostructured nanocrystals) is an important and challenging subject in nanochemistry. HNCs composed of metal oxides and noble metals such as M/Fe3O4 or M/MnO(M=Au, Pt, Pd) have synergistically enhanced catalytic activity and shown the unprecedented properties. In this work, we report the solid-state conversion based phenomena, Pd@h-SiO2 is generated from Fe3O4@asy-SiO2/Pd during the migration process through the sequencial Air and H2 annealing. The understanding of transformation process for resultant in nano-sized confined space produces better approaches to synthesize systematic and sophisticated nanoparticles.