| 磁载光催化剂ZnO/ SiO2/γ-Fe2O3的光催化性能 |
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| 引用本文： | 李红,张风梅,彭秧,徐清山.磁载光催化剂ZnO/ SiO2/γ-Fe2O3的光催化性能[J].光散射学报,2009,21(3):246-250. |
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| 作者姓名： | 李红 张风梅 彭秧 徐清山 |
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| 作者单位： | 1. 新疆大学应用化学研究所,乌鲁木齐,830046
2. 昌吉回族自治州产品质量检验所,昌吉,831100 |
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| 摘 要： | 本文采用液相沉积法制备出了纳米SiO2/γ-Fe2O3复合粒子,在其表面负载ZnO, 从而得到了易于磁性固液分离的磁载光催化剂ZnO/SiO2/γ-Fe2O3, 并通过XRD和TEM等测试技术对样品进行了表征。以可溶性染料亚甲基兰等为降解对象, 研究了磁载光催化剂ZnO/SiO2/γ-Fe2O3在紫外光下的光催化活性。结果表明, 在γ-Fe2O3和ZnO之间包覆一层无定形SiO2可使催化剂降佳率由20.76%提高到95.63%,并且该磁载光催化剂对染料有较好的降解效果, 在三次循环使用后仍能保持较好的光催化性能.
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| 关 键 词： | 磁载光催化剂 ZnO/SiO2/γ-Fe2O3 氧化锌 亚甲基兰 |
| 收稿时间： | 2009/4/30 |
Photocatalytic Acivity of ZnO/SiO2/γ-Fe2O3 Magnetic Photocatalyst |
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| LI Hong,ZHANG Feng-mei,PENG Yang,XU Qing-shan.Photocatalytic Acivity of ZnO/SiO2/γ-Fe2O3 Magnetic Photocatalyst[J].Chinese Journal of Light Scattering,2009,21(3):246-250. |
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| Authors: | LI Hong ZHANG Feng-mei PENG Yang XU Qing-shan |
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| Institution: | LI Hong1,ZHANG Feng-mei2,PENG Yang1,XU Qing-shan1(1.Institu of Applied Chemistry,Xinjiang University,Urumqi 830046,China,2.ChangJi Hui Prefecture Products Quality Inspection Institute,ChangJi 831100,China) |
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| Abstract: | Magnetic photocatalyst(ZnO/SiO_2/γ-Fe_2O_3) where γ-Fe2O3 was coated by SiO2 film as magnetic matrix,has been prepared by the method of chemical deposition and characterized by means of XRD,TEM and UV-Vis spectrometry.The photocatalysis of the catalyst was tested with methylene blue as decomposition substance and the photocatalytic activity of the material has been tested on decomposable substrate under UV-light.The results in decoloration show that an amorphous SiO2 film present between γ-Fe2O3 and ZnO can significantly improve the decoloration of methylene blue from 20.76% to 95.63%and the ZnO/SiO_2/γ-Fe_2O_3 had high photocatalytic activity and its photocatalytic activity remained good even after three cycles. |
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| Keywords: | magnetic photocatalysts ZnO/SiO_2/γ-Fe_2O_3 ZnO methlene blue |
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