摘要
采用水热法制备了铁酸铋(Bi25FeO40),将其与类石墨相氮化碳(g-C3N4)复合得到Bi25FeO40-g-C3N4磁性光催化剂,用X-射线衍射(XRD)、扫描电子显微镜(SEM)、BET比表面积分析、UV-Vis光谱和磁滞回线对该磁性光催化剂进行了表征.考察了Bi25FeO40-g-C3N4复合催化剂对亚甲基蓝的可见光催化降解效果.结果表明,Bi25FeO40-g-C3N4复合催化剂对亚甲基蓝的可见光催化降解效率远高于Bi25FeO40.此外,Bi25FeO40-g-C3N4表现出顺磁性,可通过磁选分离并回收.
Magnetic Bi25FeO40-g-C3N4 visible-light photocatalysts were prepared via the mixture and calcination of graphitic carbon nitrides （g-C3N4 ） and Bi25FeO40 synthesized by the hydrothermal methods. Bi25FeO40-g-C3N4 catalysts were characterized by X-ray diffraction （XRD）, scanning electron microscopy （SEM）, Brunauer- Emmett-Teller （BET） surface area analysis, UV-vis absorbance and magnetic hysteresis loop measurements. The results showed that Bi25FeO40-g-C3N4 composite photocatalyst exhibited prominently enhanced photocatalytic activity for the degradation of Methylene Blue （MB） under visible-light irradiation than that of Bi25FeO40. Additionally, the Bizs FeO40-g-C3 N4 composite was superparamagnetic, and could be readily recovered in an external magnetic field.
出处
《环境化学》
CAS
CSCD
北大核心
2013年第5期748-754,共7页
Environmental Chemistry
基金
国家自然科学基金(51178223
51208257)
江苏省自然科学基金(SBK201240759)
江苏省环保科研课题(2012008)资助
