Synthesis and photocatalytic properties of Co- and Cu-doped Bi2Sn2O7

International Conference on Energy Engineering and Environmental Protection 2016

能源学;生态环境科学

Zhuang, Jing^1,2 ; Hu, Chaohao^1,2 ; Zhu, Binqing^1,2 ; Zhong, Yan^1,2 ; Zhou, Huaiying^1,2

Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin

541004, China^1

School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin

541004, China^2

关键词: Energy dispersive x-ray;    Field emission scanning electron microscopy;    Photocatalytic activities;    Photocatalytic efficiency;    Photoluminescence spectrum;    UV-visible diffuse reflectance spectroscopy;    Visible-light irradiation;    X-ray diffraction analyses (XRD);   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/52/1/012081/pdf
DOI  :  10.1088/1742-6596/52/1/012081

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Bi2Sn2O7photocatalysts doped by Co and Cu ions were successfully synthesized by using the hydrothermal process and impregnation method. The products were characterized using X-ray diffraction analysis (XRD), Field emission scanning electron microscopy (FESEM), Energy dispersive X-ray detector (EDS), infrared spectroscopy (IR), the photoluminescence (PL) spectra and UV-visible diffuse reflectance spectroscopy (DRS). The photocatalytic properties were further evaluated by degrading rhodamine B (RhB) as a model pollution under visible-light irradiation. The results indicated that Co- and Cu-doped Bi2Sn2O7photocatalysts have a cubic pyrochlore phase with the hybrid metals. The metal-loaded photocatalysts show the enhanced photocatalytic efficiency for degradation of RhB under visible-light (λ> 420 nm). The mechanism of improved photocatalytic activity is also discussed in detail.