Selective preparation method of Anatase and Rutile TiO2 nanopowders using thermal plasma and the TiO2 nanopowders prepared thereby

摘要

The present invention relates to a method for selectively producing anatase phase and rutile phase titanium dioxide nanopowder using thermal plasma, and a titanium dioxide nanopowder produced thereby. In the method of manufacturing a nano powder using the thermal plasma jet of the present invention, it is not necessary to consider the post-treatment process by using a thermal plasma having characteristics such as high temperature and high activity, and there is no fear of generation of secondary pollutants, It is possible to selectively produce titanium dioxide on an anatase phase or rutile phase. In addition, the titanium dioxide nanopowder produced by the method of the present invention can be prepared into an anatase phase or a rutile phase by controlling the production conditions. In particular, in the case of titanium dioxide on rutile phase, the conventional anatase phase is phase- It is advantageously used in the field of pigments and cosmetics in which titanium dioxide on rutile is used as a nanopowder having a smaller and uniform size than the prepared titanium dioxide nanopowder on rutile.