以Na2WO4·2H2O和Zn(NO3)2·6H2O为原料,采用水热法制备了掺Ag^+的ZnWO4催化剂。利用XRD、TEM和UV-vis吸收光谱对该催化剂进行表征;以曙红B为目标降解物,研究了ZnWO4/Ag催化剂的光催化性能。结果表明,一定量Ag^+的掺入使复合光催化剂活性明显优于单一的ZnWO4,Ag^+的掺入量为0.5%(原子分数)样品光催化效果最佳,1h内对5mg/L曙红B溶液的脱色率达到93%,是改性前的1.26倍。
Ag^+-doped ZnWO4 catalysts were synthesized with Naz WO4 · 2 H2O and Zn(NO3 )2· 6H2O as sources by a hydrothermal process. The samlpes were characterized with XRD, TEM and UV-vis absorption spectrometer. The photocatalytic activities were evaluated by using Eosine B as photodegradation target. The results show that the certain doping of Ag^+ improved the photocatalytic activities of bare ZnWO4. 0.5at% Ag^+-doped ZNWO4 catalysts display higher photocatalytic property, the discoloration rate of Eosine B solution reached 93 under UV light irradiation for lh, it is 1.26 times of that of the bare ZnWO4.