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Transition metal dichalcogenides MS2 (M = Mo, W, Nb, Ta) have the lamellar structures similar to graphite. They are often used as solid lubricants in high/low temperature, high load, vacuum, in which oil lubrication is failed. We have synthesized WS2 nanotubes with decomposition method using Al2O3 template. Moreover, chemical vapor transportation reaction is used to produce NbS2 nanotubes in evacuated...
A novel room temperature synthesis of carbon nanotubes (CNTs) by liquid phase deposition of methanol is firstly reported. Nanotube samples were characterized with field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM) and Raman spectroscopy. FESEM micrographs revealed that nanotubes with diameter in the range of 20-200 nm were grown at room temperature. HR-TEM...
Nd3+ doped PbZr0.52Ti0.48O3 (PNZT) nanopowders were prepared by sol-gel methods in ethylene glycol system. Neodymium nitrate was used as Nd3+ source. The reaction mechanisms of nanopowder preparing process from the sol were discussed through using FTIR, XRD, TG-DTA, and it was proved that the heating temperature of PNZT was 50degC-100degC higher than PZT. PNZT lattice structure was characterized...
In this paper, novel top branched carbon nanotube (TBCNT) were discovered by the scanning electron microscopy (SEM) and transmission electron microscopy (TEM). This new kind TBCNT was grown directly on tungsten wire by pyrolysis of FePc. At 1123 K FePc can be decompounded into C, Fe and other elements, the deposition site of C atom was calculated when FePc be decompound in test, and the growth of...
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