In situ preparation of novel p-n junction photocatalyst BiOI/(BiO)2CO3 with enhanced visible light photocatalytic activity

In situ preparation of novel p-n junction photocatalyst BiOI/(BiO)2CO3 with enhanced visible light photocatalytic activity

Novel p–n junction photocatalysts BiOI/(BiO)2CO3 with different contents of BiOI were in situ synthesized by etching (BiO)2CO3 precursor with hydroiodic acid (HI) solution. X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), Fourier transform infrared spectrometry (FT-IR),...

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Main Authors: Cao, J., Li, Xin Yong, Lin, H., Chen, S., Fu, X.
Format: Journal Article
Published: 2012
Online Access:http://hdl.handle.net/20.500.11937/16120
id curtin-20.500.11937-16120
recordtype eprints
spelling curtin-20.500.11937-161202017-09-13T15:03:20Z In situ preparation of novel p-n junction photocatalyst BiOI/(BiO)2CO3 with enhanced visible light photocatalytic activity Cao, J. Li, Xin Yong Lin, H. Chen, S. Fu, X. Novel p–n junction photocatalysts BiOI/(BiO)2CO3 with different contents of BiOI were in situ synthesized by etching (BiO)2CO3 precursor with hydroiodic acid (HI) solution. X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), Fourier transform infrared spectrometry (FT-IR), energy-dispersive spectroscopy (EDS) and UV–vis diffuse reflectance spectroscopy (DRS) were employed to study the structures, morphologies and optical properties of the as-prepared samples. Under visible light (λ > 420 nm), BiOI/(BiO)2CO3 hybrid displayed much higher photocatalytic activity than pure (BiO)2CO3 and BiOI for the degradation of methyl orange (MO). The increased photocatalytic activity of BiOI/(BiO)2CO3 could be attributed to the formation of the p–n junction between p-BiOI and n-(BiO)2CO3, which effectively suppresses the recombination of photoinduced electron–hole pairs. Moreover, the tests of radical scavengers confirmed that radical dotO2− and h+ were the main reactive species for the degradation of MO. 2012 Journal Article http://hdl.handle.net/20.500.11937/16120 10.1016/j.jhazmat.2012.08.078 restricted
repository_type Digital Repository
institution_category Local University
institution Curtin University Malaysia
building Curtin Institutional Repository
collection Online Access
description Novel p–n junction photocatalysts BiOI/(BiO)2CO3 with different contents of BiOI were in situ synthesized by etching (BiO)2CO3 precursor with hydroiodic acid (HI) solution. X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), Fourier transform infrared spectrometry (FT-IR), energy-dispersive spectroscopy (EDS) and UV–vis diffuse reflectance spectroscopy (DRS) were employed to study the structures, morphologies and optical properties of the as-prepared samples. Under visible light (λ > 420 nm), BiOI/(BiO)2CO3 hybrid displayed much higher photocatalytic activity than pure (BiO)2CO3 and BiOI for the degradation of methyl orange (MO). The increased photocatalytic activity of BiOI/(BiO)2CO3 could be attributed to the formation of the p–n junction between p-BiOI and n-(BiO)2CO3, which effectively suppresses the recombination of photoinduced electron–hole pairs. Moreover, the tests of radical scavengers confirmed that radical dotO2− and h+ were the main reactive species for the degradation of MO.
format Journal Article
author Cao, J.
Li, Xin Yong
Lin, H.
Chen, S.
Fu, X.
spellingShingle Cao, J.
Li, Xin Yong
Lin, H.
Chen, S.
Fu, X.
In situ preparation of novel p-n junction photocatalyst BiOI/(BiO)2CO3 with enhanced visible light photocatalytic activity
author_facet Cao, J.
Li, Xin Yong
Lin, H.
Chen, S.
Fu, X.
author_sort Cao, J.
title In situ preparation of novel p-n junction photocatalyst BiOI/(BiO)2CO3 with enhanced visible light photocatalytic activity
title_short In situ preparation of novel p-n junction photocatalyst BiOI/(BiO)2CO3 with enhanced visible light photocatalytic activity
title_full In situ preparation of novel p-n junction photocatalyst BiOI/(BiO)2CO3 with enhanced visible light photocatalytic activity
title_fullStr In situ preparation of novel p-n junction photocatalyst BiOI/(BiO)2CO3 with enhanced visible light photocatalytic activity
title_full_unstemmed In situ preparation of novel p-n junction photocatalyst BiOI/(BiO)2CO3 with enhanced visible light photocatalytic activity
title_sort in situ preparation of novel p-n junction photocatalyst bioi/(bio)2co3 with enhanced visible light photocatalytic activity
publishDate 2012
url http://hdl.handle.net/20.500.11937/16120
first_indexed 2018-09-06T19:32:46Z
last_indexed 2018-09-06T19:32:46Z
_version_ 1610887846875365376

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