| 氮掺杂纳米TiO_2的制备及光催化性能研究 |
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| 引用本文： | 郭凯敏,卿宁,韩昶.氮掺杂纳米TiO_2的制备及光催化性能研究[J].五邑大学学报(自然科学版),2010,24(4):65-70. |
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| 作者姓名： | 郭凯敏 卿宁 韩昶 |
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| 作者单位： | 五邑大学,化学与环境工程学院,广东,江门,529020 |
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| 摘 要： | 以双氰胺为氮源,温和条件下采用Sol-Gel法制备氮掺杂TiO2粉末.XRD结果显示:所制备的样品是以锐钛矿相为主、含少量金红石相的混和相;UV-Vis漫反射光谱结果显示:相对于TiO2,氮掺杂纳米二氧化钛(N/TiO2)的光吸收阈值没有发生明显的红移,但可见光吸收强度明显增大.n(N):n(Ti)=0.12:1、煅烧温度400℃、煅烧时间2 h条件下制备的N/TiO2光催化剂的催化活性最佳,可见光下,300 min内可使甲基橙的降解率达到60%.
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| 关 键 词： | N掺杂 TiO2 光催化 |
A Study of the Synthesis and Photocatalytic Properties of N-doped TiO_2 Nanoparticles |
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| GUO Kai-min,QING Ning,HAN Chang.A Study of the Synthesis and Photocatalytic Properties of N-doped TiO_2 Nanoparticles[J].Journal of Wuyi University(Natural Science Edition),2010,24(4):65-70. |
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| Authors: | GUO Kai-min QING Ning HAN Chang |
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| Affiliation: | GUO Kai-min,QING Ning,HAN Chang(School of Chemical & Environmental Engineering,Wuyi University,Jiangmen 529020,China) |
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| Abstract: | Nano N/TiO2 powder was prepared with dicyandiamide as nitrogen source by using the Sol-Gel method under mild conditions.XRD results showed that the prepared samples were dominated by anatase and mixed with a small amount of rutile phase.UV-Vis diffuse reflectance spectra showed： relative to TiO2,the value of light absorption of N/TiO2 has no obvious red shift,but its intensity of visible light absorption increased significantly.With the N：Ti mole ratio at 0.12：1,the calcination temperature at 400 ℃ and the calcination time being 2 h,the catalytic activity of N/TiO2 was at its best;under visible light,the degradation rate of methyl orange dye by this catalyst could reach 60% in 300 min. |
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| Keywords: | N-doped TiO2 photocatalysis |
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