摘要
以Fe(NO_3)_3、煤矸石和NaOH为原料,采用沸腾回流法制得了一系列不同质量比的α-Fe_2O_3/煤矸石复合光催化剂。采用场发射扫描电子显微镜(FESEM)、X射线衍射仪(XRD)及紫外-可见漫反射光谱(UV-Vis DRS)等多种手段对产物做了表征。以五氯酚为目标降解物,考察了模拟太阳光照下样品的光催化效果。结果表明,将球形α-Fe_2O_3负载于改性煤矸石表面可有效提高其光催化活性,且α-Fe_2O_3/煤矸石复合光催化剂的性能与α-Fe_2O_3的含量有关,当α-Fe_2O_3与煤矸石的质量比为30∶100时,样品的光催化效果最佳,180 min内即可将五氯酚降解完全。此外,α-Fe_2O_3/煤矸石复合光催化剂还具有可重复使用的特点。
Using ferric nitrate,coal gangue and sodium hydroxide as the raw materials,α-Fe2O3/coal gangue composite photoc- atalysts with different mass ratios of α-Fe2O3 were successfully prepared by boiling reflux method.Field emission scanning electron microscopy(FESEM),X-ray powder diffraction(XRD) and UV-Vis diffuse reflectance spectra(UV-Vis DRS) were used to characterize the products.The photocatalytic activity of as-prepared samples was investigated for degradation of pentachlorophenol under simulated sunlight.The results indicated that loading spherical α-Fe2O3 composite on the surface of modified coal gangue could effectively improve its catalytic activity,and there was a close relationship between the photocatalytic performance of α-Fe2O3/coal gangue composites and the content of α-Fe2O3.When the mass ratio of α-Fe2O3 to coal gangue was 30∶100,α-Fe2O3/coal gangue composite photocatalyst showed the highest performance and pentachlorophenol was almost completely degraded within 180 min.In addition,this kind of catalyst could be used repeatedly.
作者
谢娟
夏润南
杜红霞
许永权
赵树春
许红
康文通
Xie Juan;Xia Runnan;Du Hongxia;Xu Yongquan;Zhao Shuchun;Xu Hong;Kang Wentong(College of Chemistry and Pharmaceutical Engineering,Hebei University of Science and Technology,Shijiazhuang 050018,China;College of Material Science and Engineering,Beijing University of Chemical Technology)
出处
《无机盐工业》
CAS
CSCD
北大核心
2019年第5期74-77,共4页
Inorganic Chemicals Industry
基金
国家自然科学基金资助项目(21206026)
河北省自然科学基金资助项目(E2016208144)
河北科技大学引进人才科研启动基金资助项目(1181264)
关键词
Α-FE2O3
煤矸石
光催化性能
五氯酚
α-Fe2O3
coal gangue
photocatalytic performance
pentachlorophenol
