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Journal of Inorganic Materials, Volume. 35, Issue 5, 541(2020)

Interfacial Oxygen Vacancy of Bi2O2CO3/PPy and its Visible-light Photocatalytic NO Oxidation Mechanism

Fan WU1, Ziyan ZHAO1, Bangxin LI1, Fan DONG2, and Ying ZHOU1、*
Author Affiliations
  • 1The Center of New Energy Materials and Technology, School of Materials Science and Engineering, Southwest Petroleum University, Chengdu 610500, China
  • 2Chongqing Key Laboratory Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 40067, China
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    AbstractGet PDF(in Chinese)
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    XRD patterns of (a) BOC and BOC/PPy(0.75%), and XRD pattern of (b) PPy
    1. XRD patterns of (a) BOC and BOC/PPy(0.75%), and XRD pattern of (b) PPy

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    (a) DRIFTS spectra of PPy, BOC and BOC/PPy(0.75%); (b) UV-Vis spectra and of BOC and BOC/PPy(0.75%) with insert showing the enlarged spectra from 350 nm to 800 nm
    2. (a) DRIFTS spectra of PPy, BOC and BOC/PPy(0.75%); (b) UV-Vis spectra and of BOC and BOC/PPy(0.75%) with insert showing the enlarged spectra from 350 nm to 800 nm

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    SEM images of (a) BOC and (b) BOC/PPy(0.75%); HRTEM images of (c) BOC and (d) BOC/PPy(0.75%)
    3. SEM images of (a) BOC and (b) BOC/PPy(0.75%); HRTEM images of (c) BOC and (d) BOC/PPy(0.75%)

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    XPS spectra of BOC and BOC/PPy(0.75%)
    4. XPS spectra of BOC and BOC/PPy(0.75%)

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    ESR spectra of BOC and BOC/PPy(0.75%) in the darkness
    5. ESR spectra of BOC and BOC/PPy(0.75%) in the darkness

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    (a) EIS measurements and (b) photocurrent of BOC and BOC/PPy(0.75%)
    6. (a) EIS measurements and (b) photocurrent of BOC and BOC/PPy(0.75%)

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    NO oxidation of BOC and BOC/PPy(0.75%) composites under visible light irradiation (>420 nm)
    7. NO oxidation of BOC and BOC/PPy(0.75%) composites under visible light irradiation (>420 nm)

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    Influence of influent gas relative humidity on the photocatalytic NO oxidation of BOC/PPy(0.75%)
    8. Influence of influent gas relative humidity on the photocatalytic NO oxidation of BOC/PPy(0.75%)

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    In situ DRIFTS of (a) NO adsorption and (b) photocatalytic reaction during the visible light irradiation on BOC/PPy(0.75%)
    9. In situ DRIFTS of (a) NO adsorption and (b) photocatalytic reaction during the visible light irradiation on BOC/PPy(0.75%)

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    ESR spectra of (a) •O2- and (b) •OH of BOC and BOC/PPy(0.75%)
    10. ESR spectra of (a) •O2- and (b) •OH of BOC and BOC/PPy(0.75%)

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    Ultroviolet Photoelectron Spectrum of BOC
    11. Ultroviolet Photoelectron Spectrum of BOC

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    Radical generation processes of BOC/PPy(0.75%)
    12. Radical generation processes of BOC/PPy(0.75%)

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    • Table 1. Assignments of adsorption peaks in IR spectra during NO adsorption and photocatalytic oxidation

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      Table 1. Assignments of adsorption peaks in IR spectra during NO adsorption and photocatalytic oxidation

      Wavenumber/cm-1AssignmentRef.
      1262Monodentate nitrate[38]
      1248Bridge nitrate[39]
      1183Nitrite[40]
      1159NO-[40]
      1091Nitrite[41]
      1032, 1010Bidentate nitrate[38, 40]
      984Bridge nitrate[42]
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    Fan WU, Ziyan ZHAO, Bangxin LI, Fan DONG, Ying ZHOU. Interfacial Oxygen Vacancy of Bi2O2CO3/PPy and its Visible-light Photocatalytic NO Oxidation Mechanism[J]. Journal of Inorganic Materials, 2020, 35(5): 541

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    Paper Information

    Category: RESEARCH PAPER

    Received: Jun. 10, 2019

    Accepted: --

    Published Online: Mar. 1, 2021

    The Author Email: Ying ZHOU (yzhou@swpu.edu.cn)

    DOI:10.15541/jim20190281

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology