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caiaijun80: ½ð±Ò+20, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸ 2015-08-27 09:22:30
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caiaijun80: ½ð±Ò+20, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸ 2015-08-27 09:22:30
lazy½õϪ: LS-EPI+1, ¸ÐлӦÖú 2015-08-27 09:27:24
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Hierarchical Ag2O-ZnO-Fe3O4 composites with enhanced visible-light photocatalytic activity ×÷Õß:Cai, AJ (Cai, Aijun)[ 1 ] ; Sun, YF (Sun, Yanfeng)[ 2 ] ; Du, LQ (Du, Liqiang)[ 1 ] ; Wang, XP (Wang, Xiuping)[ 1 ] JOURNAL OF ALLOYS AND COMPOUNDS ¾í: 644 Ò³: 334-340 DOI: 10.1016/j.jallcom.2015.03.236 ³ö°æÄê: SEP 25 2015 ²é¿´ÆÚ¿¯ÐÅÏ¢ ÕªÒª Efficient visible-light-driven Ag2O-ZnO-Fe3O4 photocatalysts with hierarchical structures are synthesized. The as-prepared products are characterized by X-ray diffraction (XRD), transmission electron microscope (TEM), X-ray photoelectron spectroscopy (XPS), and diffuse reflectance spectra (DRS). XRD and XPS confirm the presence of Ag2O. DRS reveals that the adsorption edge of the Ag2O-ZnO-Fe3O4 photocatalysts is redshifted as compared with that of the ZnO-Fe3O4. Visible-light photocatalytic experiments are also conducted. By coupling with Ag2O, ZnO became responsive to visible light. The results show that the photocatalytic activity of the products is closely related to the mass ratio of Ag2O and ZnO, which is tunable and controlled by the amount of AgNO3 added during the fabrication process. The highest photocatalytic activity of the Ag2O-ZnO-Fe3O4 composites is achieved by adding 1.2 mol of AgNO3. The enhancement of photocatalytic activity can be attributed to the inhibition of electron-hole recombination. Furthermore, the as-prepared products can be easily attracted by an external magnetic field, which makes the composites recyclable. (C) 2015 Elsevier B.V. All rights reserved. ¹Ø¼ü´Ê ×÷Õ߹ؼü´Ê:Ag2O-ZnO-Fe3O4; Composites; Structures; Photocatalytic activity KeyWords Plus:ZNO; PERFORMANCE; NANOCOMPOSITES; WATER; PHOTODEGRADATION; NANOPARTICLES; DEGRADATION; SUSPENSIONS; FABRICATION; ULTRAVIOLET ×÷ÕßÐÅÏ¢ ͨѶ×÷ÕßµØÖ·: Wang, XP (ͨѶ×÷Õß) Hebei Normal Univ Sci & Technol, Coll Life Sci & Technol, Qinhuangdao 066600, Peoples R China. µØÖ·: [ 1 ] Hebei Normal Univ Sci & Technol, Coll Life Sci & Technol, Qinhuangdao 066600, Peoples R China [ 2 ] Hebei Agr Univ, Ocean Coll, Qinhuangdao 066003, Peoples R China µç×ÓÓʼþµØÖ·:wangxiuping0721@163.com »ù½ð×ÊÖúÖÂл »ù½ð×ÊÖú»ú¹¹ ÊÚȨºÅ National Natural Science Foundation of China 51402087 Natural Science Foundation of Hebei Province C2014407008 Program for the Top Young Talents of Higher Learning Institutions of Hebei BJ2014026 PhD Research Startup Foundation of Hebei University of Science & Technology, China 2014YB002 ²é¿´»ù½ð×ÊÖúÐÅÏ¢ ³ö°æÉÌ ELSEVIER SCIENCE SA, PO BOX 564, 1001 LAUSANNE, SWITZERLAND Àà±ð / ·ÖÀà Ñо¿·½Ïò:Chemistry; Materials Science; Metallurgy & Metallurgical Engineering Web of Science Àà±ð:Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering ÎÄÏ×ÐÅÏ¢ ÎÄÏ×ÀàÐÍ:Article ÓïÖÖ:English Èë²ØºÅ: WOS:000357143900050 ISSN: 0925-8388 eISSN: 1873-4669 ÆÚ¿¯ÐÅÏ¢ Ŀ¼£º Current Contents Connect® Impact Factor (Ó°ÏìÒò×Ó): Journal Citation Reports® ÆäËûÐÅÏ¢ IDS ºÅ: CL7HU Web of Science ºËÐĺϼ¯ÖÐµÄ "ÒýÓõIJο¼ÎÄÏ×": 33 Web of Science ºËÐĺϼ¯ÖÐµÄ "±»ÒýƵ´Î": 0 |

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