Synthesis of CdSe and CdSe/TiO2 nanoparticles under multibubble sonoluminescence condition

CdSe and CdSe/TiO2 nanoparticles were synthesized under multibubble sonoluminescence (MBSL) condition. The influences of TiO2 introduced as the sensitizer on the morphology and crystal transformation were investigated. The morphology, phase and optical properties of the final products have been characterized by X-ray powder diffraction, transmission electron microscope, UV–vis absorption spectroscopy and photoluminescence spectroscopy. The results showed that as-prepared nanoparticles are well-crystallized, and the suppression of crystal pattern transition as well as the control of CdSe crystal growth can be implemented by coupling of TiO2 semiconductor. Furthermore, the possible growth mechanism for different morphologies and crystal phases of the nanocrystals were also discussed.