Three-Dimensional TiO2 Structures Incorporated with Tungsten Oxide forTreatment of Toxic Aromatic Volatile Compounds

Collection with item attached
2017
Item details URL
http://open-repository.kisti.re.kr/cube/handle/open_repository/486249.do
DOI
10.3390/catal7040097
Title
Three-Dimensional TiO2 Structures Incorporated with Tungsten Oxide forTreatment of Toxic Aromatic Volatile Compounds
Description
This work was supported by the National Research Foundation of Koreagrant funded by the Korea government (Ministry of Science and FuturePlanning) (No. 2016R1A2B4009122).
abstract
This study assessed 3D WO3-TiO2 nanoflowers (WTNF) synthesized by a combined hydrothermal-ultrasonication-impregnation method for their applicability to the treatment of aromatic volatile compounds under visible-light illumination. The scanning electron microscopy exhibited the formation of 3D structures in the prepared WTNF samples. The X-ray diffraction patterns and energy dispersive X-ray results indicated a successful incorporation of WO3 into TNF structures. The UV-visible spectroscopy showed that the prepared WTNF samples can be functioned under visible light irradiation. The output-to-input concentration ratios of toluene and o-xylene with WTNF samples were lower than those of TiO2 nanoflowers. These findings were illustrated on the basis of charge separation ability, adsorption capability, and light absorption of the sample photocatalysts. The input-to-output concentration ratios of the target chemicals were lowest for 10 M NaOH and highest for 5 M NaOH. The photocatalytic degradation efficiencies of WTNF sample photocatalysts increased with increasing WO3 content from 0.1% to 1.0%, and dropped gradually with increasing WO3 content further to 4.0%. Light-emitting-diodes (LEDs) are a more highly energy-efficient light source compared to a conventional lamp for the photocatalytic degradation of toluene and o-xylene, although the photocatalytic activity is higher for the conventional lamp.
provenance
Made available in Cube on 2018-09-28T16:02:33Z (GMT). No. of bitstreams: 0
language
English
author
Lee, Joon Yeob
Jo, Wan-Kuen
accessioned
2018-09-28T16:02:33Z
available
2018-09-28T16:02:33Z
issued
2017
citation
CATALYSTS(7): 4
issn
2073-4344
uri
http://open-repository.kisti.re.kr/cube/handle/open_repository/486249.do
Funder
교육부
Funding Program
BK21플러스사업(0.5)
Project ID
1345274040
Jurisdiction
Rep.of Korea
Project Name
Center for Eco-Integrated Construction
rights
openAccess
subject
nanoflower
NaOH concentration
WO3 content
light-emitting-diode
conventional lamp
type
article


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