期刊
SEPARATION AND PURIFICATION TECHNOLOGY
卷 215, 期 -, 页码 490-499出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.seppur.2019.01.024
关键词
Ag3PO4/Bi25FeO40/GO; Visible light photocatalysis; Magnetic nanocomposite; Photocatalytic performance mechanism
资金
- National Natural Science Foundation of China [51508254, 41771341]
- Fundamental Research Funds for the Central Universities [lzujbky-2017-it98]
- National College student innovation and Entrepreneurship training program of Lanzhou University
- Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lake, Chinese Academy of Sciences
In the present work, silver phosphate/sillenite bismuth ferrite/graphene oxide (Ag3PO4/Bi25FeO40/GO) nanocomposite has been successfully fabricated via hydrothermal strategy and ultrasound precipitation treatment. Afterwards, physicochemical properties of as-obtained composite were studied through X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscope (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), UV-visible diffuse reflectance spectroscopy (UV-vis DRS), Brunauer-EmmettTeller (BET) surface areas, vibrating sample magnetometer(VSM) measurements. Meanwhile, Linear sweep voltammetry (LSV), Mott-Schottky (M-S), Transient photocurrent-curves and electrochemical impedance spectroscopy (EIS) measurements were measured to investigate the photoelectrochemical properties. Besides, the degradation efficiency of Rhodamine B was as the evaluation of PC efficiency, which could reach 96.9% after 75 min illumination. The results indicated that spherical Ag(3)PO(4 )and Bi25FeO40 crystallographic particles were integrated with GO and the enhanced PC performance can be attributed to significantly visible light absorbance and charge separation efficiency. Furthermore, to distinguish the contribution of reactive species including O-center dot(2)-, (OH)-O-center dot, H2O2 , h(+) and e(-) , several scavenger experiments have been conducted. Noticeable, the Ag3PO4/Bi23FeO40/GO nanocomposite has magnetic because of the integration with Bi25FeO40.( )Eventually, the possible photocatalytic performance mechanism of Ag3PO4/Bi-25 FeO40/GO was proposed.
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