氮掺杂纳米TiO<sub>2</sub>的制备及其光催化活性

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氮掺杂纳米TiO₂的制备及其光催化活性

基金项目:

河南省高等学校重点科研项目计划资助(15A430055,16B416001)；周口师范学院校本项目资助(ZKNUB115201)。

1. College of Chemistry and Chemical Engineering, Zhoukou Normal University, Zhoukou 466001, Henan, China;
2. Zhoukou Hydrology and Water Resources Survey Bureau of Henan Province, Zhoukou 466003, Henan, China

摘要: 以尿素为氮源, 钛酸正丁酯为钛源, 采用溶胶-凝胶法制备氮掺杂纳米TiO₂。通过红外光谱 (FT-IR) 、X-射线衍射 (XRD) 、紫外-可见吸收 (UV-Vis) 光谱和扫描电镜 (SEM) 等测试手段对材料的结构和形貌进行表征;以甲基橙模拟有机污染物, 研究样品的光催化活性。结果表明, 氮掺杂纳米TiO₂为锐钛矿型结构, 尺寸均匀, 分散性好, 对甲基橙染料具有极好的光催化活性, 降解率达到97%左右。
- 氮掺杂 /
- 纳米二氧化钛 /
- 溶胶-凝胶法 /
- 甲基橙
Abstract: The nitrogen-doped nano-TiO₂ （N-doped nano-TiO₂） was prepared by sol-gel method with urea as nitrogen source and tetrabutyl titanate as titanium source. The crystal structure and morphology of the samples were characterized by FT-IR,XRD,UV-Vis and SEM,respectively. The photocatalytic activity of the obtained N-doped nano-TiO₂ was investigated through degradation of the methyl orange. The results show that the N-doped nano-TiO₂ has the anatase structure and a uniform particle size distribution with excellent dispersibility,and the degradation rate to methyl orange can be reached to 97% showing a superb photocatalytic performance.
- N-doped /
- nano-TiO₂ /
- sol-gel method /
- methyl orange