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Engineering oxygen vacancies in perovskite oxides by in-situ electrochemical activation for highly efficient nitrate reduction.

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Title: Engineering oxygen vacancies in perovskite oxides by in-situ electrochemical activation for highly efficient nitrate reduction.
Authors: Yang, Li-Hui1 (AUTHOR), Lin, Ze-Qin1 (AUTHOR), Liao, Man-Ting1 (AUTHOR), Yang, Wen-Jian1 (AUTHOR), Pan, Jian-Xin1 (AUTHOR), Li, Wei1 (AUTHOR), Yang, Cao1 (AUTHOR), Wu, Yan-Juan2 (AUTHOR), Wang, Guang-Zhao1,2 (AUTHOR) wyj1207022@163.com, Lv, Si-Hao1 (AUTHOR) 23817001@qq.com
Source: Applied Surface Science. Dec2023, Vol. 639, pN.PAG-N.PAG. 1p.
Subjects: Denitrification, Perovskite, Electrolytic reduction, Oxides, Oxygen, Catalytic activity, Electrocatalysts
Abstract: [Display omitted] • Electrochemical activation (EA) was developed for oxygen vacancies (OVs) creation in La 0.9 FeO 3. • NO 3 −-N removal rate increased 2.6-fold on activated La 0.9 FeO 3 compared to pristine La 0.9 FeO 3. • More OVs increased the adsorption energy of NO 3 − and promotes atomic H* formation. • Stability experiment and general test demonstrated the practicality of the EA strategy. Perovskite oxides have emerged as a new category of catalysts for NO 3 RR, yet their low intrinsic catalytic activity results in unsatisfactory performance. Oxygen vacancy engineering has recently been found to be effective for improving the NO 3 RR performance of perovskite oxides. Herein, a novel and efficient strategy of electrochemical activation for in-situ oxygen vacancies (OVs) creation in perovskite oxide La 0.9 FeO 3-δ was reported. The results showed that the NO 3 −-N removal rate increased 2.6-fold on activated La 0.9 FeO 3-δ in comparison to pristine La 0.9 FeO 3-δ. The enhanced NO 3 RR performance was attributed to the presence of more OVs, which served to increase the adsorption energy of NO 3 − while also promoting atomic H* formation for NO 3 −-N hydrogenation. Furthermore, a continuous experiment lasting 240 h found the activated La 0.9 FeO 3-δ exhibited extremely high stability. Additionally, we demonstrated that the electrochemical activation method was applicable to other typical perovskite oxides, such as LaCoO 3 , indicating its generalizability. This study provides a simple and scalable approach for the preparation of a high-performance perovskite oxide-type electrocatalysts for NO 3 RR. [ABSTRACT FROM AUTHOR]
Copyright of Applied Surface Science 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: 171920464
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Engineering oxygen vacancies in perovskite oxides by in-situ electrochemical activation for highly efficient nitrate reduction.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Yang%2C+Li-Hui%22">Yang, Li-Hui</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lin%2C+Ze-Qin%22">Lin, Ze-Qin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liao%2C+Man-Ting%22">Liao, Man-Ting</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yang%2C+Wen-Jian%22">Yang, Wen-Jian</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Pan%2C+Jian-Xin%22">Pan, Jian-Xin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Wei%22">Li, Wei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yang%2C+Cao%22">Yang, Cao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wu%2C+Yan-Juan%22">Wu, Yan-Juan</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Guang-Zhao%22">Wang, Guang-Zhao</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> wyj1207022@163.com</i><br /><searchLink fieldCode="AR" term="%22Lv%2C+Si-Hao%22">Lv, Si-Hao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> 23817001@qq.com</i>
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  Data: <searchLink fieldCode="JN" term="%22Applied+Surface+Science%22">Applied Surface Science</searchLink>. Dec2023, Vol. 639, pN.PAG-N.PAG. 1p.
– Name: Subject
  Label: Subjects
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  Data: <searchLink fieldCode="DE" term="%22Denitrification%22">Denitrification</searchLink><br /><searchLink fieldCode="DE" term="%22Perovskite%22">Perovskite</searchLink><br /><searchLink fieldCode="DE" term="%22Electrolytic+reduction%22">Electrolytic reduction</searchLink><br /><searchLink fieldCode="DE" term="%22Oxides%22">Oxides</searchLink><br /><searchLink fieldCode="DE" term="%22Oxygen%22">Oxygen</searchLink><br /><searchLink fieldCode="DE" term="%22Catalytic+activity%22">Catalytic activity</searchLink><br /><searchLink fieldCode="DE" term="%22Electrocatalysts%22">Electrocatalysts</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: [Display omitted] • Electrochemical activation (EA) was developed for oxygen vacancies (OVs) creation in La 0.9 FeO 3. • NO 3 −-N removal rate increased 2.6-fold on activated La 0.9 FeO 3 compared to pristine La 0.9 FeO 3. • More OVs increased the adsorption energy of NO 3 − and promotes atomic H* formation. • Stability experiment and general test demonstrated the practicality of the EA strategy. Perovskite oxides have emerged as a new category of catalysts for NO 3 RR, yet their low intrinsic catalytic activity results in unsatisfactory performance. Oxygen vacancy engineering has recently been found to be effective for improving the NO 3 RR performance of perovskite oxides. Herein, a novel and efficient strategy of electrochemical activation for in-situ oxygen vacancies (OVs) creation in perovskite oxide La 0.9 FeO 3-δ was reported. The results showed that the NO 3 −-N removal rate increased 2.6-fold on activated La 0.9 FeO 3-δ in comparison to pristine La 0.9 FeO 3-δ. The enhanced NO 3 RR performance was attributed to the presence of more OVs, which served to increase the adsorption energy of NO 3 − while also promoting atomic H* formation for NO 3 −-N hydrogenation. Furthermore, a continuous experiment lasting 240 h found the activated La 0.9 FeO 3-δ exhibited extremely high stability. Additionally, we demonstrated that the electrochemical activation method was applicable to other typical perovskite oxides, such as LaCoO 3 , indicating its generalizability. This study provides a simple and scalable approach for the preparation of a high-performance perovskite oxide-type electrocatalysts for NO 3 RR. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Applied Surface Science 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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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.apsusc.2023.158208
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Denitrification
        Type: general
      – SubjectFull: Perovskite
        Type: general
      – SubjectFull: Electrolytic reduction
        Type: general
      – SubjectFull: Oxides
        Type: general
      – SubjectFull: Oxygen
        Type: general
      – SubjectFull: Catalytic activity
        Type: general
      – SubjectFull: Electrocatalysts
        Type: general
    Titles:
      – TitleFull: Engineering oxygen vacancies in perovskite oxides by in-situ electrochemical activation for highly efficient nitrate reduction.
        Type: main
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            NameFull: Yang, Li-Hui
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            NameFull: Lin, Ze-Qin
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            NameFull: Liao, Man-Ting
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            NameFull: Yang, Wen-Jian
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            NameFull: Pan, Jian-Xin
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            NameFull: Li, Wei
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            NameFull: Yang, Cao
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            NameFull: Wu, Yan-Juan
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            – D: 01
              M: 12
              Text: Dec2023
              Type: published
              Y: 2023
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              Value: 639
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            – TitleFull: Applied Surface Science
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