| 纳米晶CuAl2O4的合成、表征及光催化性能研究 |
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| 引用本文： | 骆凡,;吴季怀,;林建明,;胡东红,;杨媛媛,;张云霞.纳米晶CuAl2O4的合成、表征及光催化性能研究[J].中国科技论文在线,2008(4):263-267. |
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| 作者姓名： | 骆凡 ;吴季怀 ;林建明 ;胡东红 ;杨媛媛 ;张云霞 |
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| 作者单位： | [1]华侨大学材料物理化学研究所,福建泉州362021; [2]泉州师范学院,福建泉州362000 |
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| 基金项目： | 高等学校博士学科点专项科研基金（20060385001） |
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| 摘 要： | 本文通过有机物前驱体法制备尖晶石型CuAl2O4纳米晶,利用TG-DTA、XRD、TEM、UV-VIS等分析手段表征了前驱体和CuAl204粉体。结果表明,CuAl2O4在热处理中出现了CuO中间相,经900℃焙烧得到单相CuAl2O4。800℃的CuAl2O4的禁带宽度为1.92 eV,颗粒直径在20～40 nm,具有最佳的光催化活性：在紫外光辐照2h对甲基橙的降解率为99%,在可见光和太阳光下也具有较高的活性。
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| 关 键 词： | 催化化学 铝酸铜 有机物前驱体法 尖晶石 |
Synthesis,characterization and photocatalytic properties of nanocrystalline CuAl2O4 |
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| Institution: | LUO Fan WU Jihuai LIN Jianming HU Donghong YANG Yuanyuan ZHANG Yunxia(1.Institute for Materials Physical Chemistry of Huaqiao University,Quanzhou,Fujian 362021;2.Quanzhou Normal University,Quanzhou,Fujian 362000) |
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| Abstract: | Spinel-type CuAI204 nanocrystalline was prepared by organic precursor method in this paper.The precursor and CuAl2O4 powder was characterized by TG-DTA,XRD,TEM,UV-VIS,etc.The result suggested that an intermediate-phase CuO appeared in the system of CuAl2O4 during the heat treatment and disappeared at 900℃. The band gap of CuAl2O4 obtained at 800℃is 1.92 eV and its particle diameter ranges from 20 to 40 nm.The sample had the highest photocatalytic activity：the efficiency of methyl orange photodegradation can reach 99% after ultraviolet illumination for 2 h and it also has high photocatalytic activity under visible light and sunshine. |
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| Keywords: | catalysis chemistry CuAl2O4 organic precursor method spinel |
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