| 有序介孔Cr_2O_3-CeO_2的制备与表征 |
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| 引用本文： | 司丽敏,刘靖婷,夏云生,包德才.有序介孔Cr_2O_3-CeO_2的制备与表征[J].渤海大学学报(自然科学版),2014(4):379-384. |
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| 作者姓名： | 司丽敏 刘靖婷 夏云生 包德才 |
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| 作者单位： | 渤海大学 化学化工与食品安全学院,辽宁锦州,121013 |
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| 基金项目： | 国家自然科学基金项目，辽宁省教育厅一般项目(NoL2013430)． |
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| 摘 要： | 以硝酸铬和硝酸铈作金属源、用介孔氧化硅作硬模板,通过真空辅助浸渍法制备得到高比表面积有序介孔Cr2O3-Ce O2复合氧化物,采用XRD、TEM、UV-Vis和N2吸附-脱附技术表征了样品的物理化学性质.结果表明,经过500℃灼烧处理的样品(meso-Cr-Ce)孔壁晶化度高且虫孔结构发达,比表面积达160 m2/g,平均孔径为7.2 nm,在紫外和可见光区还具有优良的吸光性能.这些特性将使该材料在催化领域特别是光催化领域有着广阔的应用前景.
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| 关 键 词： | 介孔材料 复合氧化物 硬模板法 |
The preparation and characterization of ordered mesoporous Cr2 O3 -CeO2 mixed oxidation |
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| SI Li-min,LIU Jing-ting,XIA Yun-sheng,BAO De-cai.The preparation and characterization of ordered mesoporous Cr2 O3 -CeO2 mixed oxidation[J].Journal of Bohai University:Natural Science Edition,2014(4):379-384. |
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| Authors: | SI Li-min LIU Jing-ting XIA Yun-sheng BAO De-cai |
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| Affiliation: | SI Li - rain, LIU Jing - ting, XIA Yun - sheng, BAO De - cai (College of Chemistry, Chemical Engineering and Food Safety, Bohai University, Jinzhou 121013, China) |
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| Abstract: | Highly surface area ordered mesoporous chromium oxide and cerium oxide composite（ meso- Cr- Ce） was synthesized via a vacuum assisted impregnation method with three dimensionally ordered mesoporous silica as hard template,chromium nitrate and cerium nitrate as metal sources. The physicochemical properties of meso- Cr- Ce were characterized by XRD,TEM,N2adsorption- desorption and ultraviolet visible diffuse reflectance spectroscopy. The results show that meso- Cr- Ce possessed a typical mesoporous structure with highly crystalline wall. Its surface area was up to 160 m^2/ g and the average pore size was ca. 7. 2 nm. The meso- Cr- Ce sample exhibits excellent UV and visible light responsive property,which would be useful in optical and catalytic applications. |
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| Keywords: | mesoporous material mixed metal oxidation hard-templating method |
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