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dc.contributor.authorSun, J.
dc.contributor.authorLi, X.
dc.contributor.authorZhao, Q.
dc.contributor.authorTade, Moses
dc.contributor.authorLiu, Shaomin
dc.date.accessioned2017-08-24T02:22:42Z
dc.date.available2017-08-24T02:22:42Z
dc.date.created2017-08-23T07:21:38Z
dc.date.issued2017
dc.identifier.citationSun, J. and Li, X. and Zhao, Q. and Tade, M. and Liu, S. 2017. Construction of p-n heterojunction �-Bi2O3/BiVO4 nanocomposite with improved photoinduced charge transfer property and enhanced activity in degradation of ortho-dichlorobenzene. Applied Catalysis B: Environmental. 219: pp. 259-268.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/56145
dc.identifier.doi10.1016/j.apcatb.2017.07.052
dc.description.abstract

© 2017 Elsevier B.V. To achieve efficient conversion of solar to chemical energy in photocatalysis, development of visible-light-induced catalysts with high charge carrier mobility and superior activity is essential. In this work, a novel ß-Bi 2 O 3 /BiVO 4 nanocomposite with p-n heterojuction structure, which is assembled by interconnected quantum dots, has been successfully constructed through a facile approach. The structural and optical properties of the as-prepared materials were comparatively characterized. Steady-state and transient-state photoluminescence spectra demonstrate that the photo-induced charge carriers in ß-Bi 2 O 3 /BiVO 4 nanocomposite display higher separation and much longer lifetime than those in individual BiVO 4 samples, which is attributed to the formation of efficient interfacial electric field between ß-Bi 2 O 3 and BiVO 4 . The photocatalytic performance of the samples was explored by the degradation of ortho-dichlorobenzene (o-DCB). Electron spin resonance examinations confirmed that much more superoxide radicals were generated in the system of ß-Bi 2 O 3 /BiVO 4 nanocomposite, which could be mainly responsible for the outstanding activity. In addition, the adsorption and oxidation of o-DCB over the as-prepared materials were studied by in situ FTIR spectroscopy to investigate the nature of surface intermediates formed on the catalysts. To clarify charge migration route, a detailed photocatalytic mechanism in terms of the energy band structures is proposed.

dc.publisherElsevier BV
dc.titleConstruction of p-n heterojunction �-Bi2O3/BiVO4 nanocomposite with improved photoinduced charge transfer property and enhanced activity in degradation of ortho-dichlorobenzene
dc.typeJournal Article
dcterms.source.volume219
dcterms.source.startPage259
dcterms.source.endPage268
dcterms.source.issn0926-3373
dcterms.source.titleApplied Catalysis B: Environmental
curtin.accessStatusFulltext not available
curtin.facultyFaculty of Science and Engineering


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