Selective synthesis of anatase and rutile via ultrasound irradiation

A simple and efficient methodology has been established for the selective synthesis of anatase and rutile as well as their mixtures with various precursors using ultrasound irradiation; the products, the particle sizes of which are nanometric (<9 nm), are dependent both upon the reaction temperature and the precursor used; a substantial reduction in reaction time as well as reaction temperature is observed as compared to the corresponding hydrothemal processes.