Abstract
The progress of nanosized bismuth oxide is reviewed. Several preparation methods including precipitation process,hydrolysis method,Sol-Gel,microemulsion method are systematically introduced.Some applications of nanosized bismuth oxide used as photocatalytic decomposition material and so on.Bismuth oxideis a advanced functioned powder material,having wide application perspectives.Using Bi2O3·5H2O and HNO3 as raw materials,nanometer Bi2O3 powder was prepared in chemistry precipitation method to study the photocalytic of nano Bi2O3 powders .Photo-catalytic degradation tests were carried out ,with Rhodamine B being the degradation object .The photocalytic degradation of Rhodamine B on Bi2O3 was researched under the UV ray irradiating the absorbance of Rhodamine in the aqueous suspension of Bi2O3 was measured by spectrophotometry ,we calculated the rate constans K of photocatalytic degradation of Rhodamine B beteen variance of temperation (500~900℃).The structure of Bi2O3 surface increases accordingly ,at the same time ,the photocatalytic activity for pollutans degradation is increased.
In addition to research on nanotechnology Bi2O3 different calcine temperature catalytic active optical effects, this article also adopted elements Ni metal and non-metallic elements oxalic acid roots of nanotechnology Bi2O3 a modified, inspected the range of Bi2O3-ray catalytic performance impact to determine the temperature at a particular time, metal / non-metallic different mix of the impact of its optical catalytic reactive。Similarly, through optical catalytic degradation Rhodamine B solution, resulting in metal and non-metallic C2O42- Ni2+ the best mix of both 0.6%. Finally, set a camera through the complex mix catalytic materials for modified Bi2O3 processing results composite mix of higher-ray makes Bi2O3 catalytic reactive.