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Oxygen-vacancy-rich La2O2CO3 nanomaterials: A cataluminescence sensor with high selectivity for propionaldehyde detection.

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Title: Oxygen-vacancy-rich La2O2CO3 nanomaterials: A cataluminescence sensor with high selectivity for propionaldehyde detection.
Authors: Jiang, Li1,2 (AUTHOR), Wan, Chengcheng2 (AUTHOR), He, Jiumei2 (AUTHOR), Zhang, Qianchun1,2 (AUTHOR) qianchunzhang@qq.com, Lu, Shaorong1 (AUTHOR) lushaor@163.com
Source: Applied Surface Science. Jul2026, Vol. 733, pN.PAG-N.PAG. 1p.
Subjects: Oxygen vacancy, Propionaldehyde, Volatile organic compounds, Nanostructured materials, Density functional theory, Heat treatment, Gas detectors
Abstract: [Display omitted] • Adjusting oxygen vacancies was first applied to enhance La 2 O 2 CO 3 nanoparticle performance in catalytic luminescence sensing. • A highly sensitive propionaldehyde sensor was developed using oxygen-vacancy-rich La 2 O 2 CO 3 nanoparticles. • The cataluminescence sensing mechanism of propionaldehyde on La 2 O 2 CO 3 -R was investigated using density functional theory. In gas sensor applications, the strategic construction and precise regulation of oxygen vacancies are crucial. This study synthesized La 2 O 2 CO 3 nanomaterials with tunable oxygen vacancy concentrations, denoted as La 2 O 2 CO 3 -R (via thermal reduction) and La 2 O 2 CO 3 -O (via thermal oxidation). Structural and morphological analyses revealed that La 2 O 2 CO 3 -R possesses a higher concentration of oxygen vacancies and a larger specific surface area than La 2 O 2 CO 3 -O. Gas sensing performance demonstrated that La 2 O 2 CO 3 -R exhibits significantly enhanced cataluminescence (CTL) intensity toward 19 volatile organic compounds (VOCs), with propionaldehyde (propanal) eliciting the strongest response. The CTL sensor based on La 2 O 2 CO 3 -R showed a broad linear detection range from 1.92 to 1928 ppm (R2 = 0.998) and a low detection limit of 0.617 ppm (S/N = 3) for propionaldehyde. Notably, this high sensitivity was maintained even in the presence of multiple interfering VOCs. The sensor's excellent anti-interference capability was validated across various VOC backgrounds, achieving recovery rates of 82.2%–102% with relative standard deviations (RSD, n = 5) between 5.8% and 8.2%, confirming its high reliability and reproducibility. Furthermore, density functional theory (DFT) simulations provided molecular-level insights into the adsorption behavior, elucidating the underlying CTL reaction mechanism. This work establishes a robust CTL sensing strategy utilizing oxygen-vacancy-rich La 2 O 2 CO 3 nanoparticles for the selective detection of propionaldehyde. [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.)
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DbLabel: Engineering Source
An: 192665449
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  Label: Title
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  Data: Oxygen-vacancy-rich La2O2CO3 nanomaterials: A cataluminescence sensor with high selectivity for propionaldehyde detection.
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  Data: <searchLink fieldCode="AR" term="%22Jiang%2C+Li%22">Jiang, Li</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wan%2C+Chengcheng%22">Wan, Chengcheng</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22He%2C+Jiumei%22">He, Jiumei</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Qianchun%22">Zhang, Qianchun</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> qianchunzhang@qq.com</i><br /><searchLink fieldCode="AR" term="%22Lu%2C+Shaorong%22">Lu, Shaorong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> lushaor@163.com</i>
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  Data: <searchLink fieldCode="JN" term="%22Applied+Surface+Science%22">Applied Surface Science</searchLink>. Jul2026, Vol. 733, pN.PAG-N.PAG. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Oxygen+vacancy%22">Oxygen vacancy</searchLink><br /><searchLink fieldCode="DE" term="%22Propionaldehyde%22">Propionaldehyde</searchLink><br /><searchLink fieldCode="DE" term="%22Volatile+organic+compounds%22">Volatile organic compounds</searchLink><br /><searchLink fieldCode="DE" term="%22Nanostructured+materials%22">Nanostructured materials</searchLink><br /><searchLink fieldCode="DE" term="%22Density+functional+theory%22">Density functional theory</searchLink><br /><searchLink fieldCode="DE" term="%22Heat+treatment%22">Heat treatment</searchLink><br /><searchLink fieldCode="DE" term="%22Gas+detectors%22">Gas detectors</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: [Display omitted] • Adjusting oxygen vacancies was first applied to enhance La 2 O 2 CO 3 nanoparticle performance in catalytic luminescence sensing. • A highly sensitive propionaldehyde sensor was developed using oxygen-vacancy-rich La 2 O 2 CO 3 nanoparticles. • The cataluminescence sensing mechanism of propionaldehyde on La 2 O 2 CO 3 -R was investigated using density functional theory. In gas sensor applications, the strategic construction and precise regulation of oxygen vacancies are crucial. This study synthesized La 2 O 2 CO 3 nanomaterials with tunable oxygen vacancy concentrations, denoted as La 2 O 2 CO 3 -R (via thermal reduction) and La 2 O 2 CO 3 -O (via thermal oxidation). Structural and morphological analyses revealed that La 2 O 2 CO 3 -R possesses a higher concentration of oxygen vacancies and a larger specific surface area than La 2 O 2 CO 3 -O. Gas sensing performance demonstrated that La 2 O 2 CO 3 -R exhibits significantly enhanced cataluminescence (CTL) intensity toward 19 volatile organic compounds (VOCs), with propionaldehyde (propanal) eliciting the strongest response. The CTL sensor based on La 2 O 2 CO 3 -R showed a broad linear detection range from 1.92 to 1928 ppm (R2 = 0.998) and a low detection limit of 0.617 ppm (S/N = 3) for propionaldehyde. Notably, this high sensitivity was maintained even in the presence of multiple interfering VOCs. The sensor's excellent anti-interference capability was validated across various VOC backgrounds, achieving recovery rates of 82.2%–102% with relative standard deviations (RSD, n = 5) between 5.8% and 8.2%, confirming its high reliability and reproducibility. Furthermore, density functional theory (DFT) simulations provided molecular-level insights into the adsorption behavior, elucidating the underlying CTL reaction mechanism. This work establishes a robust CTL sensing strategy utilizing oxygen-vacancy-rich La 2 O 2 CO 3 nanoparticles for the selective detection of propionaldehyde. [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:
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      – Type: doi
        Value: 10.1016/j.apsusc.2026.166653
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      – Code: eng
        Text: English
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        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Oxygen vacancy
        Type: general
      – SubjectFull: Propionaldehyde
        Type: general
      – SubjectFull: Volatile organic compounds
        Type: general
      – SubjectFull: Nanostructured materials
        Type: general
      – SubjectFull: Density functional theory
        Type: general
      – SubjectFull: Heat treatment
        Type: general
      – SubjectFull: Gas detectors
        Type: general
    Titles:
      – TitleFull: Oxygen-vacancy-rich La2O2CO3 nanomaterials: A cataluminescence sensor with high selectivity for propionaldehyde detection.
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            NameFull: Jiang, Li
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            NameFull: Wan, Chengcheng
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            NameFull: He, Jiumei
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            NameFull: Zhang, Qianchun
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            NameFull: Lu, Shaorong
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            – D: 01
              M: 07
              Text: Jul2026
              Type: published
              Y: 2026
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              Value: 733
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            – TitleFull: Applied Surface Science
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