
Nano particle size tungsten trioxide may be applied for the production of thermal insulation paper. Such “paper” is widely used in automobile silencers for noise elimination and heat insulation, heat-insulation materials for exhaust pipes, and isolation and anti-sintering materials. Moreover, tungsten trioxide nanopowder has photocatalytic properties so that it has been used for water pollution treatment and photolysis of water to produce hydrogen. Therefore, it is necessary to study tungsten trioxide nanomaterials to better understand the heat insulation material. Microtopography…