| 含N纳米TiO_2的制备及其可见光响应的研究 |
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| 引用本文： | 许陈文,苏冰,刘贵昂. 含N纳米TiO_2的制备及其可见光响应的研究[J]. 湛江师范学院学报, 2011, 32(6): 74-79 |
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| 作者姓名： | 许陈文 苏冰 刘贵昂 |
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| 作者单位： | 1. 湛江师范学院物理科学与技术学院,广东湛江,524048
2. 湛江师范学院物理科学与技术学院,广东湛江524048／广东省高校新材料工程技术开发中心．广东湛江,524048 |
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| 基金项目： | 国家星火计划资助项目(2011GA780032);广东省海洋与渔业局基金资助项目(A201008B05) |
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| 摘 要： | 以纳米TiO2为原料,氨水为掺杂N源,采用高能球磨法合成了含N纳米TiO2粉末.利用XRD、FT-IR、UV-Vis光谱、纳米粒度仪和光催化降解实验对其进行结构及光催化性能表征.研究结果表明,经过氮掺杂的纳米TiO2主要为锐钛矿晶型,晶粒尺寸位于8～10nm之间.对可见光具有良好的吸收性能,其吸收边红移至550nm左右,禁带宽度减小至2.25eV.当太阳光照射30min时,亚甲基蓝溶液的降解率接近100%,体现出良好的可见光响应特性.
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| 关 键 词： | 纳米TiO2 机械化学法 N掺杂 可见光响应 |
Research on Preparation of N-doped Nano-TiO2 and Response to Visible Light |
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| XU Chenwen,SU Bing,LIU Guiang. Research on Preparation of N-doped Nano-TiO2 and Response to Visible Light[J]. Journal of Zhanjiang Normal College, 2011, 32(6): 74-79 |
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| Authors: | XU Chenwen SU Bing LIU Guiang |
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| Affiliation: | 1,2* 1.Physical Science and Technology School,Zhanjiang Normal College,Zhanjiang 524048, Guangdong,China; 2.Development Center for New Materials Engineering & Technology in Universities of Guangdong,Zhanjiang 524048,Guangdong,China) |
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| Abstract: | N-doped nano-TiO2 powder were prepared by the ball-milling method and calcined using Nano-TiO2 as raw material and ammonia as N source.Its structure and properties were studied by XRD,FT-IR,UV-Vis spectrum and test of photocatalysis degradation.The results indicated that N-doped nano-TiO2 photocatalyst was anatase crystalline phase mainly,and average size of the particle about 8 ~ 10 nm.The powder have good visible light-active,and the red-shift of absorption edge occurred around 550 nm,the band gap reduce to 2.25 eV.The degradation rate of methylene blue solution reached 100% after 30 minutes irradiation of sunlight,it was proved that the powder have good visible light-active. |
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| Keywords: | Nano-TiO2 mechanical chemical method N-doped visible light-active |
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