关键词: 铁掺杂, 钨酸铋 , 水热法, 光催化

Abstract: Fe-doped nano-sized bismuth tungstate（Fe/Bi2WO6） photocatalysts were synthesized via hydrothermal method using Bi（NO3）3，Na2WO4，and Fe（NO3）3 as raw materials.XRD，SEM，EDS，XPS，and UV-vis DRS were employed to characterize and analyze the prepared samples.The sample′s photocatalytic properties were investigated by using Rh-B to simulate the pollutant.Results showed that，the optimum prepared conditions were found as follows: hydrothermal temperature was 160 ℃，hydrothermal time was 16 h，pH=1 for the precursor solution，Fe doping amount was 5%（amount-of-substance fraction）.The obtained samples owned high degree of crystallinity，which was mainly made up of spherical particles piled up by lots of flakes.After 1 h irradiation under visible light with the presence of H2O2，the samples showed relatively higher photocatalytic degradation rate of Rh-B by 99.5%，which increased by nearly 30% than what of the pure Bi2WO6 .

Key words: Fe-doping, Bi2WO6, hydrothermal method, photocatalysis