摘要
利用N掺杂和构建异质结结构改善Ti O2基光催化剂的可见光催化性能。通过水热反应法在氢氧化锶溶液中将阳极氧化Ti O2纳米管阵列转化为Sr Ti O3/Ti O2复合纳米管阵列结构,并随后在NH3中退火对Sr Ti O3/Ti O2进行N掺杂。利用扫描电子显微镜(SEM)、X射线衍射(XRD)仪、紫外可见吸收(UV-vis)和X射线光电子能谱(XPS)分析了样品的形貌、结构、成分、光谱吸收范围和元素组成。样品的可见光催化降解实验表明,N-Sr Ti O3/Ti O2表现出最佳的可见光催化活性。
Through hydrothermal reaction in Sr（OH）2 solution for a certain time, the TiO2 nanotube arrays（NTAs） made by electrochemical anodization were converted to SrTiO3/TiO2 heterostructure.Then the samples were doped with nitrogen by annealing in NH3 flow.The products were characterized by SEM, XRD, UV-vis and X-ray photoelectron spectroscopy（XPS）.The results show that the photocatalytic activity of N-SrTiO3/TiO2 NTAs under visible light is enhanced by creating heterostructure and nitrogen doping, which exhibits the best visible light photocatalytic property.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2015年第7期1750-1753,共4页
Rare Metal Materials and Engineering
基金
国家自然科学基金(21105077)
关键词
纳米管
异质结
氮掺杂
可见光催化
nanotubes
heterostructure
nitrogen doping
photocatalytic activity
