Synthesis of silicon nitride nanowires by the pyrolysis of perhydropolysilazane.
Silicon nitride nanowires synthesized by the pyrolysis of perhydropolysilazane without using any catalysts are reported. After pyrolysis at 1073 K in N2/NH3 atmosphere, the synthetic nanowires are discrete and curly with diameters about tens of nanometers and lengths of hundreds of nanometers. While after post-treatment at 1873 K in N2 atmosphere, the nanowires are continuous and randomly distributed with diameters about tens of nanometers and several microns in length. There are no bulbs or droplets on the tips of the nanowires, and two gas-solid mechanisms are proposed to explain their growth.
Qi
Gong-Jin
GJ
State Key Laboratory of Advanced Ceramic Fibers and Composites, College of Aerospace and Materials Engineering, National University of Defense Technology, Changsha 410073, P. R. China.
Zhang
Chang-Rui
CR
Hu
Hai-Feng
HF
D005591:Chemical Fractionation / Q000379:methods*; D003460:Crystallization / Q000379:methods*; D004559:Electric Wiring; D005740:Gases / Q000737:chemistry; D006358:Hot Temperature; D008422:Materials Testing; D008968:Molecular Conformation; D049329:Nanostructures / Q000032:analysis / Q000737:chemistry* / Q000648:ultrastructure*; D036103:Nanotechnology / Q000379:methods; D009584:Nitrogen / Q000032:analysis / Q000737:chemistry*; D010316:Particle Size; D012825:Silicon / Q000032:analysis / Q000737:chemistry*; D017655:Silicon Compounds / Q000032:analysis / Q000737:chemistry*; D013499:Surface Properties
D005740:Gases; D017655:Silicon Compounds; D009584:Nitrogen; C032734:silicon nitride; D012825:Silicon