Ball Milling Time For Nano Sizes In Coal

Nps tio 2 prepared by planetary ball milling, pointing to the controversy of scientic debate.Such enhancement was attributed by the authors to the disordered, amorphous state together with the srilankite phase of tio 2 nps produced upon milling.The present work deals with the effects of mm condi-tions (time and speed) on anatase tio 2 nps.