摘要
亚硝酸钠在酸性条件下可以与尿素发生反应生成氮气,在阳极氧化制备Ti O2纳米管的电解液中加入放出氮气反应需要的试剂,控制酸度连续放氮,实现了一步法N掺杂的Ti O2纳米管的新制备方法。并且通过SEM、EDS、XRD、XPS等表征手段对N掺杂和未掺杂的Ti O2纳米管的表面形貌和晶型结构及元素组成进行了对比分析,最后通过甲基橙的光催化降解来表征了N-Ti O2制备过程中盐酸浓度和亚硝酸钠浓度对光催化活性的影响。
N doping Ti O2 was prepared by one step method of anodic oxidation combined with reaction of urea with sodium nitrite under acidic conditions to release nitrogen,anatase N-Ti O2 were obtained upon calcination at temperature of 45℃ over four hours. The surface morphology,structure and elements composition was characterized by scanning electron microscope( SEM),energy dispersive spectrometry( EDS),X-ray diffraction( XRD) and X-ray photoelectron spectroscopy( XPS). Photocatalytic activity was characterized by degradation of methyl orange. The result showed that the diameters of the as-prepeared Ti O2 and N-Ti O2 were about 120 and 80 nm. XRD crystal structure analysis showed there were no changes of anatase phase in the process of N-doped Ti O2,but 101 crystal plane peak was significantly enhanced. XPS detected the N atom percentage content of 5. 60%. The photocatalytic degradation of methyl orange indicated N-doped Ti O2 has higher photocatalytic activity than undoped.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2015年第10期10110-10113,共4页
Journal of Functional Materials
