摘要
以Bi(NO3)3·5H2O和(NH4)6Mo7O24·4H2O为原料,采用超声辅助沉淀法制备了纳米可见光催化剂γ-Bi2Mo O6,用XRD,SEM,UV-Vis技术对其进行了表征,并以罗丹明B为目标降解物,考察了γ-Bi2Mo O6的可见光催化性能。表征结果显示,产物为高纯度正交结构的纳米γ-Bi2Mo O6,分散性良好。光催化实验结果表明:超声辅助沉淀法制备的γ-Bi2Mo O6的可见光催化活性优于普通沉淀法制备的产品;以超声辅助沉淀法制备的γ-Bi2Mo O6为光催化剂,在初始罗丹明B质量浓度为10 mg/L、初始溶液p H为7.2、γ-Bi2Mo O6加入量为10 g/L的最优条件下,反应180 min时的罗丹明B降解率达到97.48%。
The visible-light-driven photocatalyst γ-Bi2MoO6 was preparaed by ultrasound assisted precipitation method using Bi（NO3）3·5H2O and （NH4）6Mo7O24·4H2O as raw materials,and characterized by XRD,SEM and UV-Vis. The visible-light photocatalytic activity of γ-Bi2MoO6 was studied using rhodamine B as degradation target. The characterization results show that the product is pure nano γ-Bi2MoO6 with orthorhombic phase structure and good dispersity. The photocatalytic experimental results show that：The visible-light photocatalytic activity of γ-Bi2MoO6 prepared by ultrasound assisted precipitation method is better than that by conventional precipitation method;Using the γ-Bi2MoO6 prepared by ultrasound assisted precipitation method as photocatalyst,the degradation rate of rhodamine B is 97.48% under the optimum conditions of initial rhodamine B mass concentration 10 mg/L,initial solution pH 7.2, γ-Bi2MoO6 dosage 10 g/L and reaction time 180 min.
出处
《化工环保》
CAS
CSCD
北大核心
2015年第1期89-93,共5页
Environmental Protection of Chemical Industry
基金
河南省科技厅重点科技攻关项目(142102210026)
关键词
超声辅助沉淀法
纳米钼酸铋
罗丹明B
可见光催化降解
ultrasound assisted precipitation method
nano bismuth molybdate
rhodamine B
visible-light catalytic degradation
