Effect of iron loading on the photocatalytic performance of Bi2WO6 photocatalyst

被引：38
作者：
Sriwichai, Surassa [1 ]
Ranwongsa, Hataikarn [1 ]
Wetchakun, Khatcharin [2 ]
Phanichphant, Sukon [3 ]
Wetchakun, Natda [1 ]
机构：
[1] Chiang Mai Univ, Fac Sci, Dept Phys & Mat Sci, Chiang Mai 50200, Thailand
[2] Ubon Ratchathani Rajabhat Univ, Fac Sci, Program Phys, Ubon Ratchathani 34000, Thailand
[3] Chiang Mai Univ, Fac Sci, Mat Sci Res Ctr, Chiang Mai 50200, Thailand
来源：
SUPERLATTICES AND MICROSTRUCTURES | 2014年 / 76卷
关键词：
Bi2WO6; Hydrothermal method; Metal loading; Methylene blue; Photocatalytic activity; HYDROTHERMAL SYNTHESIS; TITANIUM-DIOXIDE; TIO2; DEGRADATION; BIVO4; WATER; COMPOSITE; RATIOS; PHASE; DYE;
D O I：
10.1016/j.spmi.2014.10.014
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Pure Bi2WO6 and nominal 0.1-2.0 mol% Fe-loaded Bi2WO6 samples were synthesized by hydrothermal method. All samples were characterized in order to obtain the correlation between structure and photocatalytic properties by X-ray diffraction, UV-vis diffuse reflectance spectrophotometry, Brunauer, Emmett and Teller-specific surface area, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, photoluminescence spectroscopy and inductively coupled plasma-optical emission spectroscopy. Photocatalytic activities of all photocatalyst samples were examined by studying the degradation of methylene blue under visible light irradiation. The 0.5 mol% Fe-loaded Bi2WO6 had the best activity in photodegradation of MB in aqueous solution under visible light irradiation. The high performance of Fe-loaded Bi2WO6 could be attributed to the fact that the Fe ions could act as electron traps promoting the electron-hole separation then enhancing the photocatalytic reaction. (C) 2014 Elsevier Ltd. All rights reserved.
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收藏
页码：362 / 375
页数：14
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