玫瑰花状分级结构BiOCl的制备及其光降解罗丹明B的性能

以麦芽糖为表面活性剂,采用水热法制备了玫瑰花状分级结构的Bi OCl光催化剂。采用XRD、SEM、TEM、SAED、FTIR、UV-Vis DRS、MS、BET比表面积和ESR等技术对所合成的催化剂进行了表征。以罗丹明B(Rh B)为模拟污染物研究了Bi OCl光催化剂的Rh B降解性能。实验结果表明:可见光下,在0.485 07 g Bi(NO3)3·5H2O中添加0.5 g麦芽糖、加入10 m L 0.2 mol/L的KCl溶液所制备的Bi OCl的光催化性能最好,在200 min时Rh B降解率达94%;Rh B的降解过程主要为脱乙基反应,降解机理主要是光敏化降解;Bi OCl催化剂具有良好的循环稳定性。

Preparation of BiOCl with rose-like hierarchical structure and its photocatalytic activity for RhB degradation

The BiOCl photocatalytist with rose-like hierarchical structure was synthesized by hydrothermal method using maltose as surfactant and characterized by XRD,SEM,TEM,SAED,FTIR,UV-Vis DRS,MS,BET and ESR. Using Rhodamine B（Rh B）as the simulated contaminant,the photocatalytic activity of BiOCl photocatalytist on Rh B degradation was studied. The experimentai results showed that：The degradation rate of RhB was up to 94% within 200 min of degradation under visible light by BiOCl prepared with 0.485 07 g Bi（NO₃）₃·5H₂O,0.5 g maltose and 10 mL 0.2 mol/L KCl solution;RhB was degraded via the deethyl reaction and the main mechanism was photosensitive degradation;The BiOCl photocatalytist had good stability for reuse.