| 退火处理对碳氮改性TiO2光催化性能的影响 |
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| 引用本文： | 杨凌,傅敏,余家燕,吴四维,王瑞琪.退火处理对碳氮改性TiO2光催化性能的影响[J].人工晶体学报,2020,49(2):291-298. |
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| 作者姓名： | 杨凌 傅敏 余家燕 吴四维 王瑞琪 |
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| 作者单位： | 重庆工商大学环境与资源学院,重庆 400067;重庆工商大学环境与资源学院,重庆 400067;催化与环境新材料重庆市重点实验室,重庆 400067;重庆市生态环境监测中心,重庆 401147;重庆工商大学环境与资源学院,重庆 400067;重庆市生态环境监测中心,重庆 401147 |
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| 基金项目： | 重庆市高校优秀成果转化资助项目(KJZH17122);重庆市社会民生科技创新专项(cstc2016shmszx20012)。 |
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| 摘 要： | 以偏钛酸和三聚氰胺为原料,在空气氛围下700℃煅烧退火制备C-N改性TiO2光催化剂.利用XRD、FT-IR、XPS、SEM、UV-Vis、BET等手段对改性前后的样品进行表征分析.分析结果显示,改性样品为大比表面积、多孔隙锐钛矿晶型TiO2材料,TiO2晶格中部分O被N取代,表面吸附酰胺化合物.与纯TiO2相比,C-N/TiO2对NO的催化氧化效率大幅度提高.其中C-N/TiO2-2对NO的催化氧化率达到69。
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| 关 键 词： | 二氧化钛 退火 氮掺杂 催化 光化学 |
Effect of Annealing Treatment on Photocatalytic Activity of Carbon Nitrogen Modified TiO2 |
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| YANG Ling,FU Min,YU Jiayan,WU Siwei,WANG Ruiqi.Effect of Annealing Treatment on Photocatalytic Activity of Carbon Nitrogen Modified TiO2[J].Journal of Synthetic Crystals,2020,49(2):291-298. |
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| Authors: | YANG Ling FU Min YU Jiayan WU Siwei WANG Ruiqi |
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| Institution: | (College of Environment and Resources,Chongqing Technology and Business University,Chongqing 400067,China;Chongqing Key Laboratory of Catalysis and New Environmental Materials,Chongqing 400067,China;Chongqing Ecological Environment Monitoring Center,Chongqing 401147,China) |
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| Abstract: | Using metatitanic acid and melamine as raw materials,C-N modified TiO2 photocatalyst were prepared by calcination annealing at 700℃in air atmosphere.The samples before and after modification were characterized by XRD,FT-IR,XPS,SEM,UV-Vis,BET,etc.The results show that the modified material is a material of porous anatase crystal TiO2 having a large specific surface area.Part of O in the TiO2 lattice is replaced by N,amide compounds are adsorbed on the surface.Compared with pure TiO2,the catalytic oxidation efficiency of NO by C-N/TiO2 is greatly improved.The catalytic oxidation rate of NO by C-N/TiO2-2 reaches 69%. |
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| Keywords: | TiO2 annealing nitrogen doping catalysis photochemistry |
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