α-Fe2O3-ZnO/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 ofα-Fe2O3-ZnO/coal gangue composite photocatalyst and their application in PCP degradation

作　　者：谢娟 夏润南 杜红霞[1] 赵树春[1] 许红 康文通[1] Xie Juan;Xia Runnan;Du Hongxia;Zhao Shuchun;Xu Hong;Kang Wentong(College of Chemistry and Pharmaceutical Engineering,Hebei University of Science and Technology,Shijiazhuang 050018;College of Material Science and Engineering,Beijing University of Chemical Technology,Beijing 102200)

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,北京102200

出　　处：《化工新型材料》2019年第12期165-168,172,共5页New Chemical Materials

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、E2019208211）;河北科技大学引进人才科研启动基金资助项目（1181264）

摘　　要：以氯化铁(FeCl3)、氯化锌(ZnCl2)、煤矸石和氢氧化钠(NaOH)为原料,采用沸腾回流法制得了一系列纳米三氧化二铁(α-Fe2O3)和氧化锌(ZnO)不同摩尔配合比的纳米三氧化二铁-氧化锌/煤矸石复合光催化剂(α-Fe2O3-ZnO/煤矸石复合光催化剂),并对产物进行了表征。以五氯酚(PCP)为目标降解物,考察了模拟太阳光照条件下样品的光催化降解效果。结果表明,将球形α-Fe2O3-ZnO复合物负载于改性煤矸石表面可有效提高其光催化活性,且α-Fe2O3-ZnO/煤矸石复合光催化剂的性能与α-Fe2O3和ZnO的摩尔配合比有关,在α-Fe2O3与ZnO的摩尔配合比为1∶5,光照4h条件下,α-Fe2O3-ZnO/煤矸石复合光催化剂对PCP的降解率达到100%,具有最佳的光催化降解效果,此外还具有可重复使用的特点。Using ferric chloride,zinc chloride,coal gangue and sodium hydroxide as the reactants,α-Fe2O3-ZnO/coal gangue composite photocatalysts with different mole ratios ofα-Fe2O3 to ZnO 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 samples was investigated for degradation of pentachlorophenol(PCP)under simulated sunlight.The results indicated that loading sphericalα-Fe2O3-ZnO composite on the surface of modified coal gangue can effectively improve its catalytic activity,and there was a close relationship between the photocatalytic performance of the composites and the mole ratios ofα-Fe2O3 to ZnO.When the molar ratio ofα-Fe2O3 to ZnO was 1∶5,the photocatalyst shown the highest performance and the degradation rate of PCP was up to 100% within 4 h.In addition,this catalysts can be used repeatedly.

关 键 词：纳米三氧化二铁-氧化锌 煤矸石 制备 光催化性能 五氯酚 

分 类 号：X703[环境科学与工程—环境工程] O643.36[理学—物理化学] O644.1[理学—化学]