Visible light photocatalytic properties of Bi2O3 modified BiPO4 nanorod composite photocatalyst

被引：0
|
作者：
机构：
[1] University of Chinese Academy of Sciences, Beijing
[2] State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou
来源：
Lu, Gong-Xuan | 1600年 / Science Press卷 / 29期
关键词：
Bi[!sub]2[!/sub]O[!sub]3[!/sub] modification; BiPO[!sub]4[!/sub] nanorod; Controllable morphology; Photocatalysis;
D O I：
10.15541/jim20140106
中图分类号：
学科分类号：
摘要：
BiPO4 nanorod composite photocatalyst with controllable morphology was synthesized by using Bi2S3 nanorods as a template. This composite catalyst exhibited excellent photocatalytic performance for methylene blue (MB) degradation under visible light irradiation. UV-Vis diffuse reflectance spectroscopy results showed that the Bi2O3 modified BiPO4 catalyst had higher visible light absorption. X-ray diffraction and transmission electron microscopy results indicated that as-prepared BiPO4 catalyst was nanorods with diameter of about 30 nm and length of 200-500 nm. Surface modification with small amount Bi2O3 could significantly promote visible light degradation efficiency of MB, which was about 1.7 times higher than that of the unmodified BiPO4 catalyst. Photocurrent and N2 adsorption experiments showed that the photocurrent and BET specific surface area increased significantly after surface modification. Bi2O3 modification not only enhanced visible light absorption ability of catalyst but also presented a center for the enhancement of electron transfer. The results showed BiPO4 catalyst with Bi2O3 modification was a high activity photocatalytic material. ©, 2014, Science Press. All right reserved.
引用
收藏
页码：1204 / 1210
页数：6
相关论文
共 26 条
  • [1] Xie Y.Z., Wu S.H., Zhao L., Et al., Photocatalytic degradation of p-fluorobenzoic acid in sewage over Pt /TiO<sub>2</sub>, J. Mol. Catal. (China), 26, pp. 449-455, (2012)
  • [2] Li X.Z., Li F.B., Study of Au/Au<sup>3+</sup>-TiO<sub>2</sub> Photocatalysts toward visible photooxidation for water and wastewater treatment, Environ. Sci. Technol., 35, pp. 2381-2387, (2001)
  • [3] Feng Y., Liu X.-Y., Jiang Z., Et al., Photocatalysis activity of Pt /TiO<sub>2</sub> toward low concentration NO abatement, J. Mol. Catal. (China), 27, pp. 76-82, (2013)
  • [4] Kudo A., Omori K., Kato H., A novel aqueous process for preparation of crystal form-controlled and highly crystalline BiVO<sub>4</sub> powder from layered vanadates at room temperature and its photocatalytic and photophysical properties, J. Am. Chem. Soc., 121, pp. 11459-11467, (1999)
  • [5] Lin X.P., Huang T., Huang F.Q., Et al., Photocatalytic activity of a Bi-based oxychloride Bi<sub>3</sub>O<sub>4</sub>Cl, J. Phys. Chem. B, 110, 48, pp. 24629-24634, (2006)
  • [6] Dunkle S.S., Suslick K.S., Photodegradation of BiNbO<sub>4</sub> powder during photocatalytic reactions, J. Phys. Chem. C, 113, 24, pp. 10341-10345, (2009)
  • [7] Zhao X., Xu T.G., Yao W.Q., Et al., Photodegradation of dye pollutants catalyzed by γ-Bi<sub>2</sub>MoO<sub>6</sub> nanoplate under visible light irradiation, App. Surf. Sci., 255, pp. 8036-8040, (2009)
  • [8] Shi R., Lin J., Wang Y.J., Et al., Visible-light photocatalytic degradation of BiTaO<sub>4</sub> photocatalyst and mechanism of photocorrosion suppression, J. Phys. Chem. C, 114, pp. 6472-6477, (2010)
  • [9] Pan C.S., Zhu Y.F., Size-controlled synthesis of BiPO4 nanocrystals for enhanced photocatalytic performance, J. Mater. Chem., 21, pp. 4235-4241, (2011)
  • [10] Lumetta G.J., Mcnamara B.K., Buck E.C., Et al., Characterization of high phosphate radioactive tank waste and simulant development, Environ. Sci. Technol., 43, 20, pp. 7843-7848, (2009)
123