摘要
将通过电化学制备的单质Bi薄膜应用于光催化降解无色污染物2,4-DCP,发现单质Bi薄膜本身具有光催化的能力,并且通过表征结果推测了单质Bi的能带结构与光催化的机理。利用XRD、SEM,DRS等表征手段对反应前后的单质Bi薄膜进行了表征。同时,我们发现调控Bi^(3+)的浓度能够影响单质Bi的光催化性能,在Bi^(3+)离子浓度为0.03M所制备的单质Bi的光催化活性最佳,在可见光照射下90 min,2,4-DCP的降解率达到了74.8%。
Bismuth thin film has been synthesized by electrochemical method.The as-prepared film had been characterized by X ray diffraction(XRD),scanning electron microscopy(SEM),UV-visible spectroscopy(UV-Vis)and so on.we have demonstrated that bismuth film are photocatalytically active by introducing for the photocatalysis prosess of 2,4-DCP,given that the conduction and valence bands of semimetallic Bi by the results of characterization and the mechanism of the photocatalysis process.The photocatalytic activity of Bi film could be affected by the concentration of Bi^(3+).The results showed that the best photocatalytic performance film is the sample prepared by 0.03M Bi^(3+),the degradation efficiency of 2,4-DCP reached 76.5%under visible light irradiation after 90 minutes.
出处
《江西化工》
2022年第2期9-14,共6页
Jiangxi Chemical Industry
关键词
单质Bi薄膜
电化学合成
光催化性能
2
4-DCP
机理
Bismuth thin film
Electrochemical preparation
Photocatalytic performance
2,4-DCP,Mechanism
