摘要
以高温热聚合三聚氰胺得到的石墨相氮化碳(g-C3N4)为前驱体,通过简单的共沉淀法合成了Fe3O4/g-C3N4磁性复合材料。通过X射线衍射(XRD)、扫描电镜(SEM)、傅里叶变换红外光谱(FT-IR)和紫外-可见漫反射光谱分析(UV-Vis DRS)等手段对材料进行表征,并考察了该复合材料在可见光条件下对有机染料酸性橙7的降解效率。结果表明:Fe3O4/g-C3N4复合材料由片状结构g-C3N4和絮状物质Fe3O4颗粒组成,Fe3O4/g-C3N4复合材料不仅保持了在紫外区的强吸收,而且在可见光区吸收波长范围更大;Fe3O4/g-C3N4为16∶1时的复合材料表现出最高效的光催化活性和良好的稳定性,其原因是Fe3O4和g-C3N4之间的协同作用,促进了光生电荷相互分离。
Fe3O4/g-C3N4 magnetic composites were synthesized by simple coprecipitation method,using g-C3N4 prepared from high temperature thermal polymerization of melamine as precursor.The as-prepared samples were characterized by X-ray diffraction(XRD),scanning electron microscope(SEM),fourier transform infrared spectroscopy(FT-IR)and ultraviolet-visible diffuse reflection spectrum analyzer(UV-Vis DRS)and other methods.And the degradation efficiency of acid orange 7 under visible light was investigated.The results shown that Fe3O4/g-C3N4 were composed of plate-like structure g-C3N4 and cotton-like Fe3O4 particles.Fe3O4/g-C3N4 not only maintained strong absorption in the ultraviolet region,but also had a wider absorption wavelength range in the visible region.16∶1 Fe3O4/g-C3N4 composites exhibited the highest photocatalytic activity and good stability.The reason was that the synergistic effect between Fe3O4 and g-C3N4 promoted the separation of photogenerated charges.
作者
张璐
白永庆
易均辉
莫惠媚
周开欣
Zhang Lu;Bai Yongqing;Yi Junhui;Mo Huimei;Zhou Kaixin(China Certification&Inspection Guangxi Co.,Ltd.,Fangchenggang 538001;Fangchenggang Quality and Technical Supervision Bureau,Fangchenggang 538001;Guangdong University of Petrochemical Technology,Maoming 525000)
出处
《化工新型材料》
CAS
CSCD
北大核心
2020年第7期119-123,共5页
New Chemical Materials
基金
国家自然科学基金(21777034)
茂名市科技计划(2019412)。
作者简介
张路(1982-),女,本科,检验员,主要从事化学化工检测及光催化新材料研究;联系人:易均辉(1983-),男,博士,主要从事光催化新材料方面的研究。
