α-Fe_2O_3/煤矸石复合光催化剂的制备及其降解五氯酚性能的研究  

Preparation of α-Fe_2O_3/coal gangue composite photocatalyst and its application in pentachlorophenol degradation

作　　者：谢娟 夏润南 杜红霞[1] 许永权[1] 赵树春[1] 许红 康文通[1] 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)

机构地区：[1]河北科技大学化学与制药工程学院,石家庄050018 [2]北京化工大学材料科学与工程学院

出　　处：《无机盐工业》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)

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.

关 键 词：Α-FE2O3 煤矸石 光催化性能 五氯酚 

分 类 号：TQ138.11[化学工程—无机化工]