期刊
MATERIALS RESEARCH BULLETIN
卷 64, 期 -, 页码 97-105出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2014.12.040
关键词
Composites; Semiconductors; Chemical synthesis; Catalytic properties; Surface properties
资金
- Guangzhou Science and Technology Plan Projects [2014J4100007]
In this work, a new plasmonic photocatalyst Ag/AgI/BiOI-rectorite was prepared via a cation exchange process. The photocatalyst had been characterized by X-ray powder diffraction (XRD), Raman spectra, nitrogen sorption (BET), field-emission scanning electron microscope (FE-SEM), X-ray photoelectron spectroscopy (XPS) and UV-vis diffuse reflectance spectroscopy (DRS). The photocatalytic activity, which was evaluated by degradation of rhodamine B (RhB) and bisphenol A (BPA) under visible light irradiation, was enhanced significantly by loading Ag/AgI/BiOl nanoparticles onto rectorite. The photogenerated holes and superoxide radical (center dot O-2(-)) were both formed as active species for the photocatalytic reactions under visible light irradiation. The existence of metallic Ag particles, which possess the surface plasmon resonance effect, acted as an indispensable role in the photocatalytic reaction. (C) 2014 Elsevier Ltd. All rights reserved.
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