摘要
以溶剂热法和溶胶-凝胶法分别制得溴化氧铋(BiOBr)和铁酸铋(BiFeO_3),并在110℃的水热条件下使2种材料结合得到BiOBr-BiFeO_3复合光催化剂。借助XRD、SEM、TEM等测试方法对催化剂的晶体结构、微观形貌、吸光性质等进行了表征,测试表明BiOBr纳米片的引入增强了BiFeO_3分散性。以罗丹明B(RhB)为目标污染物考察了催化剂的光催化性能,其中以BiOBr含量为35%(wt,质量分数)的BiOBr-BiFeO_3复合物表现出最佳的降解活性。
Owing to the applications in degradation of dyes,organic chemicals and water splitting for hydrogen and reduction of CO2 under the UV-visible light,photocatalysis technology has become a kind of green oxidation technology.Here,BiOBr and BiFeO3 were synthesized by solvothermal and sol-gel method respectively followed by the hydrothermal process at 110℃to fabricate BiOBr-BiFeO3 composites.XRD,SEM,TEM and DRS were used to characterize the crystalline,microstructure and optical property,indicating that the introduction of BiOBr nanosheets decreased the aggregation of BiFeO3 particles.The photodegradation of RhB was used to evaluate the photocatalytic performance of synthesized materials and BiOBr-BiFeO3 composite with 35% of BiOBr exhibited the highest photocatalytic efficiency.
出处
《化工新型材料》
CAS
CSCD
北大核心
2016年第9期100-103,共4页
New Chemical Materials
基金
国家自然科学基金(21507046)
江苏省自然科学基金(BK20130513)
江苏省高校自然科学基金(13KJB430007)
江苏大学研究生科研创新计划项目(KYXX-0012)
江苏大学大学生创新创业训练计划项目(201610299010W)
江苏大学大学生科研立项资助项目(14A336
14A302)
江苏省高等学校大学生创新创业训练计划项目(201510299061Y)
关键词
铁酸铋
溴化氧铋
异质结
光催化
bismuth ferrite
bismuth oxybromide
heterojunction
photocatalysis
