Synthesis and optical properties of multiwalled carbon nanotubes beaded with Cu_2O nanospheres

摘要

A method for synthesizing multiwalled carbon nanotubes (MWNTs) beaded with C112G nanospheres has been developed. In this work Cu(CH_3COO)_2 centre dot H_2O served as the precursor and NaBH_4 as the reducing agent, and the produced CU_2O nanoparticles were deposited on the MWNTs with the help of poly(vinyl pyrrolidone) (PVP). After increasing the ageing time, grapelike Cu_2O nanospheres adhering to the MWNTs gradually came into being. The synthesized products were systematically studied by x-ray powder diffraction, scanning electron microscopy and transmission electron microscopy. UV-vis absorption spectra were used to estimate the band gap energies of the hybrid system. The synthesis process was facile, efficient and not time-consuming. This method may shed light on integrating MWNTs with other oxide nanospheres and/or nanoparticles using a PVP medium, and lead to an exploration of the potential properties of nanocomposite hybrid materials.