摘要
采用混合溶剂热法在尿素的辅助下成功地制备了新型可见光复合催化剂NiO/Bi7.47Ni0.53O11.73(BiNiO).利用X射线多晶粉末衍射(XRD)仪、X射线光电子能谱(XPS)、扫描电镜(SEM)、透射电镜(TEM)、紫外-可见漫反射谱(UV-Vis DRS)对样品进行了表征,并以甲基橙为目标降解物对其光催化性能进行研究.结果表明:样品是由自组装三维(3D)-Bi7.47Ni0.53O11.73微球和其表面薄层NiO纳米片组成,前驱物在300°C条件下煅烧2 h后所得样品BiNiO-300光催化效果最好,在可见光(波长大于420 nm)照射下,3 h内对甲基橙溶液的脱色率高达98%.
Abstract： Three-dimensional （3D）-NiO/BiT,TNi053O1173 （BiNiO） microspheres were synthesized by a mixed solvothermal process in the presence of urea. The catalysts were characterized using X-ray diffraction （XRD）, scanning electron microscopy （SEM）, transmission electron microscopy （TEM）, X-ray photoelectron spectroscopy （XPS）, ultraviolet-visible diffuse reflectance spectroscopy （UV-Vis DRS）, and photodegradation of methyl orange （MO）. The results show that the composite catalysts are composed of NiO nanosheets and 3D-NiO/BiT,TNi0.53Ol1.73 microspheres. The sample BiNiO-300, which was prepared by heating the precursor at 300 ℃ for 2 h, had the best photocatalytic activity： after visible-light irradiation for 3 h, the decolorization of an MO solution was 98%.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
2013年第12期2608-2614,共7页
Acta Physico-Chimica Sinica
基金
四川省教育厅项目(13ZB0137)
四川理工学院人才引进项目(2012RC05)
四川省大学生培养计划基金资助~~
关键词
复合材料
光催化
可见光
甲基橙
Composite
Photocatalytic
Visible light
Methyl orange
