Visible photoluminescence of MWCNT/CdS nanohybrid structure synthesized by a simple chemical process

The authors report a simple wet chemical technique to prepare hybrid nanostructures of multiwalled carbon nanotubes (MWCNT) and cadmium sulphide (CdS) nanoparticles. In a solution containing cadmium acetate and sodium sulphide, purified MWCNTs are added. Cadmium sulphide nanocrystals of average size 5 nm are synthesized and they decorate the walls of the MWCNTs. The hybrid material is characterized by scanning electron microscopy (SEM), high resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD) and Raman spectroscopy. Interesting optical properties of the composite are revealed through UV–vis and photoluminescence (PL) spectroscopy.