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),...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Published: |
2012
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| Online Access: | http://hdl.handle.net/20.500.11937/16120 |
| _version_ | 1848749082673152000 |
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| author | Cao, J. Li, Xin Yong Lin, H. Chen, S. Fu, X. |
| author_facet | Cao, J. Li, Xin Yong Lin, H. Chen, S. Fu, X. |
| author_sort | Cao, J. |
| 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. |
| first_indexed | 2025-11-14T07:15:17Z |
| format | Journal Article |
| id | curtin-20.500.11937-16120 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:15:17Z |
| publishDate | 2012 |
| recordtype | eprints |
| repository_type | Digital Repository |
| 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 |
| 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 |
| title | 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_short | 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 |
| url | http://hdl.handle.net/20.500.11937/16120 |