Fabrication, characterization and photocatalytic properties of Ag/AgI/BiOI heteronanostructures supported on rectorite via a cation-exchange method

Journal Article · Wed Apr 15 00:00:00 EDT 2015 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2014.12.040· OSTI ID:22475720

Chen, Yunfang ^[1]; Fang, Jianzhang ^[1]; Lu, Shaoyou ^[2]; Wu, Yan; Chen, Dazhi; Huang, Liyan ^[3]; Xu, Weicheng; Zhu, Ximiao ^[1]; Fang, Zhanqiang ^[1]

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1. School of Chemistry and Environment, South China Normal University, Guangzhou 510006, Guangdong (China)
2. Shenzhen Center for Disease Control and Prevention, Shenzhen 518055 (China)
3. Institute of Engineering Technology of Guangdong Province, Key Laboratory of Water Environmental Pollution Control of Guangdong Province, Guangzhou 510440 (China)

Highlights: • Ag/AgI/BiOI-rectorite was prepared by twice cation-exchange process. • Ag/AgI/BiOI-rectorite photocatalyst possessed SPR and adsorption capacity. • Ag/AgI/BiOI-rectorite exhibited highly photocatalytic activity. • Trapped holes and ·O{sub 2}{sup −} were formed active species in the photocatalytic system. - Abstract: 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/BiOI nanoparticles onto rectorite. The photogenerated holes and superoxide radical (·O{sub 2}{sup −}) 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.

• OSTI ID: 22475720
• Journal Information: Materials Research Bulletin, Vol. 64; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
ADSORPTION
BISMUTH COMPOUNDS
CAPACITY
FIELD EMISSION
IODINE COMPOUNDS
ION EXCHANGE
IRRADIATION
NANOPARTICLES
NITROGEN
OXYGEN COMPOUNDS
PHOTOCATALYSIS
RAMAN SPECTRA
RESONANCE
SCANNING ELECTRON MICROSCOPY
SEMICONDUCTOR MATERIALS
SILVER
SILVER IODIDES
SURFACE PROPERTIES
X-RAY DIFFRACTION
X-RAY PHOTOELECTRON SPECTROSCOPY