期刊
ADVANCED POWDER TECHNOLOGY
卷 29, 期 5, 页码 1158-1166出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apt.2018.02.007
关键词
Bismuth oxyiodide; Erbium ion doping; Nanosheet; Microwave-assisted solvothermal; Photocatalytic performance
资金
- Natural Science Foundation of China [U1607110]
- Provincial International Technology Cooperation Project of Qinghai, China [2014-HZ-819, 2015-HZ-811]
- Natural Science Foundation of Qinghai Province, China [2013-Z-925Q]
- Ministry of Education, Chunhui Project, China [Z2014012]
BiOI nanosheet photocatalysts with different Er3+ doping contents were rapidly synthesized by microwave-assisted solvothermal method using water and ethylene glycol as a mixed solvent. All synthesized photocatalysts were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), N-2 adsorption, photoluminescence (PL) spectra, and UV-vis diffuse reflectance spectroscopy (DRS). The photocatalytic activities of the as-prepared Er3+-doped BiOI nanosheets were investigated by the photodegradation of Rhodamine B (RhB) dye in aqueous solution under visible light irradiation. The photodegradation results indicate the optimal doping of 1 mol.% Er3+ in BiOI nanosheets (doping content is from 0 mol.% to 4 mol.%) to be the most beneficial for photodegradation of RhB. 1Er-BiOI nanosheets also possesses good photocatalytic activity for representative anionic methyl orange (MO). From the scavenger testing results, the reactive species of holes (h(+)) and superoxide radical anions (O-center dot(2-)) show major impacts on the photodegradation progress of RhB and MO dyes over 1Er-BiOI photocatalyst under visible light irradiation. (C) 2018 Published by Elsevier B.V. on behalf of The Society of Powder Technology Japan. All rights reserved.
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