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Carbon nitride modified hexagonal boron nitride interface as highly efficient blue LED light-driven photocatalyst.

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Title: Carbon nitride modified hexagonal boron nitride interface as highly efficient blue LED light-driven photocatalyst.
Authors: Chen, Tiansheng1, Zhang, Qianxin1, Xie, Zhijie1, Tan, Cuiwen1, Chen, Ping2, Zeng, Yongqin1, Wang, Fengliang1, Liu, Haijin3, Liu, Yang4, Liu, Guoguang1 liugg615@163.com, Lv, Wenying1 lvwy612@163.com
Source: Applied Catalysis B: Environment & Energy. Dec2018, Vol. 238, p410-421. 12p.
Subjects: Hexagonal crystal system, Boron nitride, Photocatalysts, Photocatalysis, Fluoroquinolones
Abstract: Hexagonal boron nitride (BN) nanomaterials that possess an extensive specific surface area, negatively charged properties, high thermal conductivity, and excellent chemical characteristics, have significant advantages for water purification and energy storage. They are typically considered as potential catalysts due to their wide tunable bandgap. Here, carbon nitride (CN) modified BN (CMBN), which facilitated the formation of new C N B bonds, was successfully synthesized using a facile hydrothermal-calcination synthesis strategy. Such highly active bonds made the photocatalyst responsive to a wider range of wavelengths (e.g., ultraviolet to visible blue light), while significantly enhancing photocatalytic activity toward the degradation of enrofloxacin (ENFX). A 3-CMBN sample exhibited 39.3 times, and 2.4 times, higher photocatalytic properties than that of pristine BN and CN, respectively. The remarkable response of 5, 5-dimethyl-1-pyrrolidone -N- oxyl (DMPOX) was investigated through electron spin resonance spectroscopy (EPR) with 3-CMBN, which indicated higher oxidability than BN and CN under blue LED irradiation. Reactive species scavenging experiments revealed that the photodegradation of ENFX was dominated by electron holes and O 2 − . Moreover, the byproducts of ENFX were detected by HPLC-Q-TOF and GC–MS, probable pathways toward these byproducts were deduced, and repeated tests confirmed good stability. These results provided a new strategy to guide the enhanced design of advanced photocatalysts with active chemical bonding species, which can be applied to environmental remediation. [ABSTRACT FROM AUTHOR]
Copyright of Applied Catalysis B: Environment & Energy is the property of Elsevier B.V. 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.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 131235420
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Carbon nitride modified hexagonal boron nitride interface as highly efficient blue LED light-driven photocatalyst.
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  Data: <searchLink fieldCode="AR" term="%22Chen%2C+Tiansheng%22">Chen, Tiansheng</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Qianxin%22">Zhang, Qianxin</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Xie%2C+Zhijie%22">Xie, Zhijie</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Tan%2C+Cuiwen%22">Tan, Cuiwen</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Chen%2C+Ping%22">Chen, Ping</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Zeng%2C+Yongqin%22">Zeng, Yongqin</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Wang%2C+Fengliang%22">Wang, Fengliang</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Liu%2C+Haijin%22">Liu, Haijin</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Liu%2C+Yang%22">Liu, Yang</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22Liu%2C+Guoguang%22">Liu, Guoguang</searchLink><relatesTo>1</relatesTo><i> liugg615@163.com</i><br /><searchLink fieldCode="AR" term="%22Lv%2C+Wenying%22">Lv, Wenying</searchLink><relatesTo>1</relatesTo><i> lvwy612@163.com</i>
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  Data: <searchLink fieldCode="JN" term="%22Applied+Catalysis+B%3A+Environment+%26+Energy%22">Applied Catalysis B: Environment & Energy</searchLink>. Dec2018, Vol. 238, p410-421. 12p.
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  Data: <searchLink fieldCode="DE" term="%22Hexagonal+crystal+system%22">Hexagonal crystal system</searchLink><br /><searchLink fieldCode="DE" term="%22Boron+nitride%22">Boron nitride</searchLink><br /><searchLink fieldCode="DE" term="%22Photocatalysts%22">Photocatalysts</searchLink><br /><searchLink fieldCode="DE" term="%22Photocatalysis%22">Photocatalysis</searchLink><br /><searchLink fieldCode="DE" term="%22Fluoroquinolones%22">Fluoroquinolones</searchLink>
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  Data: Hexagonal boron nitride (BN) nanomaterials that possess an extensive specific surface area, negatively charged properties, high thermal conductivity, and excellent chemical characteristics, have significant advantages for water purification and energy storage. They are typically considered as potential catalysts due to their wide tunable bandgap. Here, carbon nitride (CN) modified BN (CMBN), which facilitated the formation of new C N B bonds, was successfully synthesized using a facile hydrothermal-calcination synthesis strategy. Such highly active bonds made the photocatalyst responsive to a wider range of wavelengths (e.g., ultraviolet to visible blue light), while significantly enhancing photocatalytic activity toward the degradation of enrofloxacin (ENFX). A 3-CMBN sample exhibited 39.3 times, and 2.4 times, higher photocatalytic properties than that of pristine BN and CN, respectively. The remarkable response of 5, 5-dimethyl-1-pyrrolidone -N- oxyl (DMPOX) was investigated through electron spin resonance spectroscopy (EPR) with 3-CMBN, which indicated higher oxidability than BN and CN under blue LED irradiation. Reactive species scavenging experiments revealed that the photodegradation of ENFX was dominated by electron holes and O 2 − . Moreover, the byproducts of ENFX were detected by HPLC-Q-TOF and GC–MS, probable pathways toward these byproducts were deduced, and repeated tests confirmed good stability. These results provided a new strategy to guide the enhanced design of advanced photocatalysts with active chemical bonding species, which can be applied to environmental remediation. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Applied Catalysis B: Environment & Energy is the property of Elsevier B.V. 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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      – Type: doi
        Value: 10.1016/j.apcatb.2018.07.053
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      – Code: eng
        Text: English
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        PageCount: 12
        StartPage: 410
    Subjects:
      – SubjectFull: Hexagonal crystal system
        Type: general
      – SubjectFull: Boron nitride
        Type: general
      – SubjectFull: Photocatalysts
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      – SubjectFull: Photocatalysis
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      – SubjectFull: Fluoroquinolones
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      – TitleFull: Carbon nitride modified hexagonal boron nitride interface as highly efficient blue LED light-driven photocatalyst.
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              Text: Dec2018
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