Cited 44 time in webofscience Cited 48 time in scopus

Visible-light absorptivity of a zincoxysulfide (ZnOxS1-x) composite semiconductor and its photocatalytic activities for degradation of organic pollutants under visible-light irradiation

Title
Visible-light absorptivity of a zincoxysulfide (ZnOxS1-x) composite semiconductor and its photocatalytic activities for degradation of organic pollutants under visible-light irradiation
Authors
Kim, C[Kim, Cham]Doh, SJ[Doh, Seok Joo]Lee, SG[Lee, Se Geun]Lee, SJ[Lee, Sung Jun]Kim, HY[Kim, Ho Young]
DGIST Authors
Kim, C[Kim, Cham]; Doh, SJ[Doh, Seok Joo]; Lee, SG[Lee, Se Geun]Lee, SJ[Lee, Sung Jun]Kim, HY[Kim, Ho Young]
Issue Date
2007-10-10
Citation
Applied Catalysis A: General, 330, 127-133
Type
Article
Article Type
Article
Keywords
CalcinationComposite SemiconductorsCoprecipitationLight AbsorptionOrganic PollutantsPhotocatalysisPhotocatalystPhotodegradationSemiconductor MaterialsSolid SolutionsVisible-LightVisible-Light IlluminationZincoxysulfide (ZnOxS1-x)ZincoxysulfidesZnOZnS
ISSN
0926-860X
Abstract
This work reports the development of a visible-light sensible photocatalyst and the photocatalytic degradation of organic pollutants under visible-light irradiation. A composite semiconductor of ZnS and ZnO was prepared through co-precipitation process of Zn(NO3)2 in the mixed solution of aqueous Na2S and NaOH followed by calcination at 400 °C in N2 atmosphere. It was revealed that the composite semiconductor was a solid solution of ZnS and ZnO, a zincoxysulfide (ZnOxS1-x) having advanced visible-light absorptivity. It was assured that the visible-light absorptivity was caused by modification of band structure while the solid solution had been prepared, thus we suggested a reasonable band structure model involved in a zincoxysulfide. To observe its photocatalytic activity under visible-light illumination, photodegradation test was done and we confirmed that zincoxysulfide showed predominant photocatalytic activity due to its superior visible-light absorptivity to pure ZnS and ZnO. © 2007 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/20.500.11750/2519
DOI
10.1016/j.apcata.2007.07.016
Publisher
Elsevier B.V.
Related Researcher
Files:
There are no files associated with this item.
Collection:
ETC1. Journal Articles


qrcode mendeley

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE