| 纳米LaFeO_3和SrFeO_3制备、表征及光催化活性研究 |
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| 引用本文： | 杨秋华,沈海云.纳米LaFeO_3和SrFeO_3制备、表征及光催化活性研究[J].实验室科学,2009(5):61-64. |
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| 作者姓名： | 杨秋华 沈海云 |
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| 作者单位： | 天津大学理学院化学系,天津,300072 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 该文主要采用溶胶-凝胶法合成了纳米LaFeO3和SrFeO3,并采用XRD,TEM等技术对其进行表征,并以其为光催化剂在荧光汞灯照射下对水溶性染料进行降解实验,结果表明采用溶胶-凝胶法合成的SrFeO3光催化活性高于LaFeO3。通过XPS分析认为SrFeO3的光催化活性远远高于LaFeO3,主要取决于SrFeO3中表面吸附氧的含量远远大于LaFeO3中表明吸附氧的含量。
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| 关 键 词： | LaFeO3 SrFeO3 溶胶-凝胶法 光催化活性 表面吸附氧 |
The preparation, characterization and study on photocatalytic property of nano-particle LaFeO3 and SrFeO3 |
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| YANG Qiu-hua,SHEN Hai-yun.The preparation, characterization and study on photocatalytic property of nano-particle LaFeO3 and SrFeO3[J].Laboratory Science,2009(5):61-64. |
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| Authors: | YANG Qiu-hua SHEN Hai-yun |
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| Institution: | (Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China) |
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| Abstract: | Nano-particles LaFeO3 and SrFeO3 are synthesized by sol-gel method in this article.The structure and morphology of the samples are characterized by powder X ray diffraction （XRD） and TEM. Using a luminous Hg lamp as irradiator,the degradation experiments of various water-soluble dyes are carried out in the suspension system of the samples.The results show that photocatalytic activities of SrFeO3 is better than that of LaFeO3. According to the results of XPS analysis,content of adsorbed oxygen in SrFeO3 is h... |
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| Keywords: | LaFeO3 SrFeO3 |
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