摘要
以硝酸铁和硝酸银为原料,采用水热法和沉淀法制备了α-FeOOH/Ag2O纳米光催化剂。通过X射线衍射(XRD),扫描电子显微镜(SEM),场发射透射电子显微镜(TEM)等手段对材料予以表征,结果表明成功构建了一种α-FeOOH/Ag2O异质结构的纳米颗粒催化剂。以罗丹明B(RhB)水溶液作为模拟污水,采用LED白光灯作为光源,通过光降解实验评估其光催化性能。实验结果表明,当α-FeOOH和Ag2O的质量比为1∶10,反应时间为60 min时,α-FeOOH/Ag2O复合催化剂的光催化效果最优,RhB降解率达到了89.9%,而单一的α-FeOOH或是Ag2O的降解率分别只有26.1%和58.9%。
α-FeOOH/Ag2O composites were synthesized by facile hydrothermal and chemical deposition methods.The crystallinity and morphology were characterized with X-ray diffraction(XRD),transmission electron microscopy(TEM)and scanning electron microscopy(SEM),which confirmed theα-FeOOH was coating on the surface of Ag2O and the heterostructures were formed.The photocatalytic activity of theα-FeOOH/Ag2O composites were evaluated through the photocatalytic degradation of organic dye Rhodamine B(RhB)under visible light irradiation.Compared with pure Ag2O andα-FeOOH,theα-FeOOH/Ag2O composites exhibited much higher photocatalytic activities,and the degradation rates of RhB were 89.9%,26.1%and 58.9%respectively.
作者
段帅
蒋阮经
陈怡
张英
黄向阳
DUAN Shuai;JIANG Ruanjing;CHEN Yi;ZHANG Ying;HUANG Xiangyang(College of Urban Construction,Yangtze University,Jingzhou 434020,China)
出处
《环境科学与技术》
CAS
CSCD
北大核心
2019年第7期136-140,共5页
Environmental Science & Technology
基金
湖北省自然科学青年基金（2017CFB327）
长江大学大学生创新创业训练计划项目（2016002）
