Silver Orthophosphate Immobilized on Flaky Layered Double Hydroxides as the Visible-Light-Driven Photocatalysts

被引:30
作者
Cui, Xianlu [2 ]
Li, Yaogang [1 ]
Zhang, Qinghong [1 ]
Wang, Hongzhi [2 ]
机构
[1] Donghua Univ, MOE, Engn Res Ctr Adv Glasses Mfg Technol, Shanghai 201620, Peoples R China
[2] Donghua Univ, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China
关键词
NANOPARTICLES; TEMPERATURE; ABSORPTION; BIVO4; WATER;
D O I
10.1155/2012/263254
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Flaky layered double hydroxide (FLDH) was prepared by the reconstruction of its oxide in alkali solution. The composites with FLDH/Ag3PO4 mass ratios at 1.6 : 1 and 3 : 1 were fabricated by the coprecipitation method. The powders were characterized by X-ray diffraction, field-emission scanning electron microscopy, transmission electron microscope, and UV-vis diffuse reflectance spectroscopy. The results indicated that the well-distributed Ag3PO4 in a fine crystallite size was formed on the surface of FLDH. The photocatalytic activities of the Ag3PO4 immobilized on FLDH were significantly enhanced for the degradation of acid red G under visible light irradiation compared to bare Ag3PO4. The composite with the FLDH/Ag3PO4 mass ratio of 3 : 1 showed a higher photocatalytic efficiency.
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页数:6
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