511.
Cu (I) phenyl acetylide was used as a source of copper to achieve a homogeneous distribution of Cu
2O nanocrystals (10–80 nm) decorated on multiwalled carbon nanotubes (MWCNTs) having an average diameter of 10 nm. Pristine
MWCNTs were first oxygen-functionalized by treating them with a mixture of concentrated (H
2SO
4/HNO
3 : 3/1) acids and the products were characterized by X-ray powder diffraction, transmission and scanning electron microscopy,
energy dispersive X-ray analysis, X-ray photoelectron spectroscopy and thermogravimetric analysis. An easy, efficient and
one-step impregnation method was followed to produce copper-containing nanoparticles on the MWCNTs. The copper-treated MWCNTs
dried at room temperature were seen to be well decorated by copper-containing nanoparticles on their outer surface. The MWCNTs
were then heat-treated at 400 °C in a nitrogen atmosphere to produce a homogeneous distribution of cuprous oxide nanocrystals
on their surface. By varying the ratio of copper to oxygen-functionalized MWCNTs, Cu
2O nanocrystals decorated on MWCNTs with different copper content can be obtained.
相似文献