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Photoluminescence, surface photovoltage and photocatalytic properties of BaBiO3 powders.

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Title: Photoluminescence, surface photovoltage and photocatalytic properties of BaBiO3 powders.
Authors: Men, Baoquan1,2, Zhang, Jianxin2, Diao, Chunli2, Li, Xijin2 lxjzbj@126.com, Liu, Xiangyang2, Zheng, Haiwu2 zhenghaiw@ustc.edu
Source: Journal of Materials Science: Materials in Electronics. Aug2018, Vol. 29 Issue 15, p12729-12734. 6p.
Subjects: Polycrystals, X-ray diffraction, Scanning electron microscopy, Surface photovoltage, Photocatalysis
Abstract: Polycrystalline BaBiO3 (BBO) powders were synthesized at different calcined temperature using a solid state reaction method. X-ray diffraction analysis confirms that the compounds are a monoclinic structure with space group C2/m. The average particle size increases with the increasing synthesized temperature observed by scanning electronic microscopy. The band gap of the powder is calculated to be about 1.8 eV according to the absorption edge of 620 nm. The surface photovoltage spectroscopy reveals that the powder demonstrates two strongest surface photovoltage response peaks at 400 and 470 nm, which may be due to the surface states caused by the defects and oxygen vacancies in the band gap. The photoluminescence spectra show that the recombination rate of the photo-carriers decreases with the increase of synthesized temperatures, correspondingly, the intensity of the emission spectra decreases. In addition, the strong photocatalytic decoloration effect on methylene blue could further corroborate photo-generated carriers behavior in the BBO powders. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Materials Science: Materials in Electronics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Photoluminescence, surface photovoltage and photocatalytic properties of BaBiO<subscript>3</subscript> powders.
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  Data: <searchLink fieldCode="AR" term="%22Men%2C+Baoquan%22">Men, Baoquan</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Jianxin%22">Zhang, Jianxin</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Diao%2C+Chunli%22">Diao, Chunli</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Li%2C+Xijin%22">Li, Xijin</searchLink><relatesTo>2</relatesTo><i> lxjzbj@126.com</i><br /><searchLink fieldCode="AR" term="%22Liu%2C+Xiangyang%22">Liu, Xiangyang</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Zheng%2C+Haiwu%22">Zheng, Haiwu</searchLink><relatesTo>2</relatesTo><i> zhenghaiw@ustc.edu</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Materials+Science%3A+Materials+in+Electronics%22">Journal of Materials Science: Materials in Electronics</searchLink>. Aug2018, Vol. 29 Issue 15, p12729-12734. 6p.
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  Data: <searchLink fieldCode="DE" term="%22Polycrystals%22">Polycrystals</searchLink><br /><searchLink fieldCode="DE" term="%22X-ray+diffraction%22">X-ray diffraction</searchLink><br /><searchLink fieldCode="DE" term="%22Scanning+electron+microscopy%22">Scanning electron microscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+photovoltage%22">Surface photovoltage</searchLink><br /><searchLink fieldCode="DE" term="%22Photocatalysis%22">Photocatalysis</searchLink>
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  Label: Abstract
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  Data: Polycrystalline BaBiO3 (BBO) powders were synthesized at different calcined temperature using a solid state reaction method. X-ray diffraction analysis confirms that the compounds are a monoclinic structure with space group C2/m. The average particle size increases with the increasing synthesized temperature observed by scanning electronic microscopy. The band gap of the powder is calculated to be about 1.8 eV according to the absorption edge of 620 nm. The surface photovoltage spectroscopy reveals that the powder demonstrates two strongest surface photovoltage response peaks at 400 and 470 nm, which may be due to the surface states caused by the defects and oxygen vacancies in the band gap. The photoluminescence spectra show that the recombination rate of the photo-carriers decreases with the increase of synthesized temperatures, correspondingly, the intensity of the emission spectra decreases. In addition, the strong photocatalytic decoloration effect on methylene blue could further corroborate photo-generated carriers behavior in the BBO powders. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Materials Science: Materials in Electronics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s10854-018-9390-8
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        Text: English
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      – SubjectFull: Scanning electron microscopy
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      – SubjectFull: Surface photovoltage
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      – SubjectFull: Photocatalysis
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            NameFull: Zhang, Jianxin
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            NameFull: Li, Xijin
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              M: 08
              Text: Aug2018
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              Y: 2018
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