| 用水量对溶胶-凝胶法制备氮掺杂纳米二氧化钛的影响 |
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| 引用本文： | 胡裕龙,刘宏芳,郭兴蓬.用水量对溶胶-凝胶法制备氮掺杂纳米二氧化钛的影响[J].硅酸盐学报,2010,38(1). |
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| 作者姓名： | 胡裕龙 刘宏芳 郭兴蓬 |
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| 作者单位： | 1. 华中科技大学化学与化工学院,武汉,430074;海军工程大学理学院,武汉,430033
2. 华中科技大学化学与化工学院,武汉,430074 |
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| 基金项目： | 材料化学与服役失效湖北省重点实验室开放基金(200802);;煤燃烧国家重点实验室开放课题(FSKLCC0809)资助项目 |
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| 摘 要： | 采用两种用水量的溶胶-凝胶工艺制备了氮掺杂二氧化钛(N-TiO2)纳米颗粒粉末,对样品进行了X射线衍射、透射电子显微镜、X射线光电子能谱及紫外-可见漫反射谱分析,并以甲基橙的光催化降解实验研究了样品的可见光催化性能。结果表明:采用用水多的溶胶-凝胶工艺可获得可见光催化活性高的N-TiO2,且N-TiO2的颗粒粒径较小;由于溶胶中过量的N掺杂剂可在N-TiO2前驱体凝胶离心分离时被去除,可进行较低温度的煅烧,易于获得N掺杂浓度较高的N-TiO2。另外,采用用水多的工艺时,氮掺杂剂对TiO2颗粒的氮化及凝胶化过程也有很大的影响,有些含氮化合物作为掺杂剂可能会明显降低N-TiO2的可见光催化活性。
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| 关 键 词： | 用水量 溶胶-凝胶法 氮掺杂 二氧化钛 可见光光催化活性 |
EFFECT OF WATER DOSAGE ON SYNTHESIS OF NITROGEN DOPED TITANIA NANOPARTICLES BY SOL-GEL METHOD |
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| HU Yulong,LIU Hongfang,GUO Xingpeng.EFFECT OF WATER DOSAGE ON SYNTHESIS OF NITROGEN DOPED TITANIA NANOPARTICLES BY SOL-GEL METHOD[J].Journal of The Chinese Ceramic Society,2010,38(1). |
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| Authors: | HU Yulong LIU Hongfang GUO Xingpeng |
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| Affiliation: | 1.School of Chemistry and Chemical Engineering;Huazhong University of Science and Technology;Wuhan 430074;2.College of Science;Naval University of Engineering;Wuhan 430033;China |
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| Abstract: | Nitrogen doped titania (N-TiO2) nanoparticles were prepared by sol-gel processes at different water dosages.The particles obtained were characterized by X-ray diffraction,transmission electron microscope,X-ray photoelectron spectroscopy,and ultraviolet-visible diffuse reflectance spectrum.The visible light photocatalytic activities were evaluated by photocatalytic oxidation of methyl orange.It was found that N-TiO2 with a high visible light photocatalytic activity can be obtained by the sol-gel process at a... |
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| Keywords: | water dosage sol-gel process nitrogen doping titania visible light photocatalytic activity |
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