Adsorption/photocatalytic performances of hierarchical flowerlike BiOBrxCl1-x nanostructures for methyl orange, Rhodamine B and methylene blue

Title
Adsorption/photocatalytic performances of hierarchical flowerlike BiOBrxCl1-x nanostructures for methyl orange, Rhodamine B and methylene blue
Author(s)
손영구나율이김영일조대원프라드한[프라드한]
Keywords
LIGHT PHOTOCATALYTIC PERFORMANCE; VISIBLE-LIGHT; HIGHLY EFFICIENT; DYE DEGRADATION; ORGANIC POLLUTANTS; BIOBR MICROSPHERES; MESOPOROUS BIOBR; IONIC LIQUID; BISPHENOL-A; BIOCL
Issue Date
201411
Publisher
ELSEVIER SCI LTD
Citation
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING, v.27, pp.181 - 190
Abstract
We synthesized hierarchical flower-like BiOBrxCl1-x (0 <= x <= 1) microspheres in ethylene glycol solvent and examined their fundamental properties by scanning electron microscopy (SEM), X-day diffraction (XRD), UV-visible absorption, Raman, photoluminescence spectroscopy, and BET surface area measurement. Additionally, their adsorption and photocatalytic performance were tested using methyl orange (MO), Rhodamine B (RhB), and methylene blue (MB). The adsorption performance was found to be in the order of BiOCl < BiOBrxCl1-x < BiOBr for MO under dark conditions. For the selected BiOBr0.7Cl0.3 catalyst, the adsorption ability was found to be in the order of MO << RhB < MB owing to electrostatic interactions between the catalyst and the dye. The photocatalytic dye degradation performance occurred in the order of MB < MO << RhB as a result of light absorption by the dye followed by good electron transfer from the conduction band of the dye to that of the catalyst An indirect chemical probe method was used to examine the roles of active species in the dye-sensitized photodegradation mechanism, which were found to be in the order of (OH)-O-center dot approximate to O-2(-) < h(+) under visible light irradiation. (C) 2014 Elsevier Ltd. All rights reserved
URI
http://hdl.handle.net/YU.REPOSITORY/30501http://dx.doi.org/10.1016/j.mssp.2014.06.043
ISSN
1369-8001
Appears in Collections:
이과대학 > 화학생화학부 > Articles
문과대학 > 중국언어문화학과 > Articles
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