Catalytic Growth of Germanium Oxide Nanowires,Nanotubes,and Germanium Nanowires:Temperature-Dependent Effect

摘要

One-dimensional GeO2 and Ge nanostructures,including nanotubes,nanowires,and branched nanowires,were synthesized using Au as catalysts.White products of GeO2 and brown products of Ge were fabricated at temperature regions of 500-600 and 300-400 °C,respectively.For the first time,we report the formation of single-crystalline GeO2 nanotubes and branched nanowires.Detailed growth mechanisms of the nanowires,nanotubes,and branched nanowires are presented.Fabrication of one-dimensional nanostructures with different configurations and compositions simultaneously from a single precursor enables the diversity of nanotubeanowire synthesis,as well as their potential applications in nanoscale photonic and electronic devices.