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%。
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%.
作者
杨凌
傅敏
余家燕
吴四维
王瑞琪
YANG Ling;FU Min;YU Jiayan;WU Siwei;WANG Ruiqi(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)
出处
《人工晶体学报》
EI
CAS
北大核心
2020年第2期291-298,共8页
Journal of Synthetic Crystals
基金
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)。
关键词
二氧化钛
退火
氮掺杂
催化
光化学
TiO2
annealing
nitrogen doping
catalysis
photochemistry
