摘要
以钛酸纳米管和Cu(NO3)2为前驱体,采用沉积-沉淀法制备CuO修饰TiO2纳米管(CuO/TiO2NTs)。通过TEM(透射电子显微镜)、XRD(X射线衍射)和XPS(X射线光电子能谱)表征材料的结构,并研究制备过程中pH值对所得CuO/TiO2 NTs催化CO氧化活性的影响。研究表明,通过沉积-沉淀法可以制备高活性的CuO/TiO2NTs,随溶液的pH值升高,铜的负载量变少,而且不易被还原的二价铜含量升高,导致催化剂的活性变差。
CuO-modified TiOz nanotubes (CuO/TiOz NTs) were prepared by deposition-precipitation method using hydrogen titanate nanotubes and Cu(NO3 )2 as precursor. The prepared materials were characterized with trans- mission electron microscopy (TEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The in- fluence of solution pH on their catalytic activity for CO oxidation was investigated. Obtained results indicate that CuO/TiOz NTs exhibit high catalytic activity, and the CuO content decreases while unreducible copper ( Ⅱ ) increases with the raise of pH, which results in the decrease of catalytic activity.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2014年第12期1-3,共3页
Materials Reports
基金
国家自然科学基金(21373120
21301098)
天津市自然科学基金(13JCQNJC02000)
国家大学生创新性实验计划(111005510)
关键词
钛酸纳米管
氧化铜
沉积-沉淀法
催化CO氧化
hydrogen titanate nanotubes, CuO, deposition-precipitation method, catalytic activity for CO oxidation