物理化学学报 >> 2013, Vol. 29 >> Issue (12): 2608-2614.doi: 10.3866/PKU.WHXB201310312

催化和表面科学 上一篇    下一篇

3D-NiO/Bi7.47Ni0.53O11.73光催化剂的制备及其可见光催化性能

桂明生, 王鹏飞, 袁东, 汤苗苗   

  1. 四川理工学院材料与化学工程学院, 四川自贡 643000
  • 收稿日期:2013-09-13 修回日期:2013-10-30 发布日期:2013-11-28
  • 通讯作者: 桂明生 E-mail:guimingsheng@126.com
  • 基金资助:

    四川省教育厅项目(13ZB0137), 四川理工学院人才引进项目(2012RC05)和四川省大学生培养计划基金资助

Preparation and Visible Light Photocatalytic Activity of 3D-NiO/Bi7.47Ni0.53O11.73 Photocatalysts

GUI Ming-Sheng, WANG Peng-Fei, YUAN Dong, TANG Miao-Miao   

  1. College of Materials and Chemical Engineering, Sichuan University of Science & Engineering, Zigong 643000, Sichuan Province, P. R. China
  • Received:2013-09-13 Revised:2013-10-30 Published:2013-11-28
  • Contact: GUI Ming-Sheng E-mail:guimingsheng@126.com
  • Supported by:

    The project was supported by the Education Department Scientific Research Projects of Sichuan Province, China (13ZB0137), Talents Project of Sichuan University of Science & Engineering, China (2012RC05), and Student Research Program of Sichuan Province, China.

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 ℃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%.

关键词: 复合材料, 光催化, 可见光, 甲基橙

Abstract:

Three-dimensional (3D)-NiO/Bi7.47Ni0.53O11.73 (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/Bi7.47Ni0.53O11.73 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%.

Key words: Composite, Photocatalytic, Visible light, Methyl orange

MSC2000: 

  • O643.3