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Article: Photocatalytic decomposition of 4-t-octylphenol over NaBiO 3 driven by visible light: Catalytic kinetics and corrosion products characterization

TitlePhotocatalytic decomposition of 4-t-octylphenol over NaBiO 3 driven by visible light: Catalytic kinetics and corrosion products characterization
Authors
Keywords4-t-Octylphenol
BiOCl
NaBiO 3
Photocatalysis
Issue Date2010
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jhazmat
Citation
Journal Of Hazardous Materials, 2010, v. 173 n. 1-3, p. 765-772 How to Cite?
AbstractThe photocatalytic decomposition of 4-t-octylphenol (4-t-OP) by NaBiO 3 photocatalyst and the catalyst stability in aqueous solution were investigated systematically for the first time. The results showed that some parameters such as catalyst dosage, initial 4-t-OP concentration and pH value of the solution had great effects on the photocatalytic activity. The NaBiO 3 photocatalyst maintained considerable catalytic performance under visible light (λ > 400 nm) irradiation and exhibited a higher photocatalytic activity compared to the commercialized photocatalyst P25. In addition, the corrosion products of NaBiO 3 catalyst under acid condition (HCl aqueous solution contained) were characterized by X-ray diffraction (XRD), transmittance electronic microscopy (TEM), selected area electron diffraction (SAED), X-ray photoelectron spectroscopy (XPS) and UV-vis transmittance spectrum analysis. The results showed that NaBiO 3 was unstable under the acidic condition and the catalyst could convert into Bi 3+-containing compounds such as Bi 2O 3, etc. The experiment demonstrates that NaBiO 3 can be corroded to nano-sized BiOCl crystal in the presence of hydrogen chloride, the band gap of which was estimated to be 3.28 eV by Tauc's approach. © 2009 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/124690
ISSN
2015 Impact Factor: 4.836
2015 SCImago Journal Rankings: 1.692
ISI Accession Number ID
Funding AgencyGrant Number
National Natural Science Foundation of China50538090
National Science Fund for Distinguished Young Scholars of China50625823
National Key Project of Scientific and Technical Supporting Programs2007BAC03A09
Funding Information:

This research was financially supported by National Natural Science Foundation of China (No. 50538090), National Science Fund for Distinguished Young Scholars of China (No. 50625823), and National Key Project of Scientific and Technical Supporting Programs (No. 2007BAC03A09).

References

 

DC FieldValueLanguage
dc.contributor.authorChang, Xen_HK
dc.contributor.authorHuang, Jen_HK
dc.contributor.authorCheng, Cen_HK
dc.contributor.authorSha, Wen_HK
dc.contributor.authorLi, Xen_HK
dc.contributor.authorJi, Gen_HK
dc.contributor.authorDeng, Sen_HK
dc.contributor.authorYu, Gen_HK
dc.date.accessioned2010-10-31T10:48:41Z-
dc.date.available2010-10-31T10:48:41Z-
dc.date.issued2010en_HK
dc.identifier.citationJournal Of Hazardous Materials, 2010, v. 173 n. 1-3, p. 765-772en_HK
dc.identifier.issn0304-3894en_HK
dc.identifier.urihttp://hdl.handle.net/10722/124690-
dc.description.abstractThe photocatalytic decomposition of 4-t-octylphenol (4-t-OP) by NaBiO 3 photocatalyst and the catalyst stability in aqueous solution were investigated systematically for the first time. The results showed that some parameters such as catalyst dosage, initial 4-t-OP concentration and pH value of the solution had great effects on the photocatalytic activity. The NaBiO 3 photocatalyst maintained considerable catalytic performance under visible light (λ > 400 nm) irradiation and exhibited a higher photocatalytic activity compared to the commercialized photocatalyst P25. In addition, the corrosion products of NaBiO 3 catalyst under acid condition (HCl aqueous solution contained) were characterized by X-ray diffraction (XRD), transmittance electronic microscopy (TEM), selected area electron diffraction (SAED), X-ray photoelectron spectroscopy (XPS) and UV-vis transmittance spectrum analysis. The results showed that NaBiO 3 was unstable under the acidic condition and the catalyst could convert into Bi 3+-containing compounds such as Bi 2O 3, etc. The experiment demonstrates that NaBiO 3 can be corroded to nano-sized BiOCl crystal in the presence of hydrogen chloride, the band gap of which was estimated to be 3.28 eV by Tauc's approach. © 2009 Elsevier B.V. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jhazmaten_HK
dc.relation.ispartofJournal of Hazardous Materialsen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subject4-t-Octylphenolen_HK
dc.subjectBiOClen_HK
dc.subjectNaBiO 3en_HK
dc.subjectPhotocatalysisen_HK
dc.subject.meshBismuth - chemistry-
dc.subject.meshCatalysis-
dc.subject.meshHydrochloric Acid - chemistry-
dc.subject.meshMicroscopy, Electron, Transmission-
dc.subject.meshPhenols - chemistry-
dc.titlePhotocatalytic decomposition of 4-t-octylphenol over NaBiO 3 driven by visible light: Catalytic kinetics and corrosion products characterizationen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0304-3894&volume=173&issue=1-3&spage=765&epage=772&date=2010&atitle=Photocatalytic+decomposition+of+4-t-octylphenol+over+NaBiO3+driven+by+visible+light:+catalytic+kinetics+and+corrosion+products+characterizationen_HK
dc.identifier.emailSha, W:shawei@hku.hken_HK
dc.identifier.authoritySha, W=rp01605en_HK
dc.description.naturepostprint-
dc.identifier.doi10.1016/j.jhazmat.2009.08.148en_HK
dc.identifier.pmid19800168-
dc.identifier.scopuseid_2-s2.0-71749106659en_HK
dc.identifier.hkuros176058en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-71749106659&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume173en_HK
dc.identifier.issue1-3en_HK
dc.identifier.spage765en_HK
dc.identifier.epage772en_HK
dc.identifier.isiWOS:000273135600108-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridChang, X=20435527800en_HK
dc.identifier.scopusauthoridHuang, J=30767499300en_HK
dc.identifier.scopusauthoridCheng, C=55231834200en_HK
dc.identifier.scopusauthoridSha, W=34267903200en_HK
dc.identifier.scopusauthoridLi, X=26662454200en_HK
dc.identifier.scopusauthoridJi, G=7102392984en_HK
dc.identifier.scopusauthoridDeng, S=7202438110en_HK
dc.identifier.scopusauthoridYu, G=7403528462en_HK
dc.identifier.citeulike5760033-

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