View in EDS

Unveiling the role of oxygen vacancies: Micropore-rich Ovm-TiO2 nanocatalysts for enhanced cataluminescence detection of isobutyraldehyde.

Saved in:
Bibliographic Details
Title: Unveiling the role of oxygen vacancies: Micropore-rich Ovm-TiO2 nanocatalysts for enhanced cataluminescence detection of isobutyraldehyde.
Authors: Tang, Shan1 (AUTHOR) tangshan@xynun.edu, He, Jiumei1 (AUTHOR), Wan, Chengcheng1 (AUTHOR), Jiang, Li1 (AUTHOR), Zhang, Qianchun1 (AUTHOR) qianchunzhang@qq.com
Source: Applied Surface Science. Jun2026, Vol. 730, pN.PAG-N.PAG. 1p.
Subjects: Oxygen vacancy, Titanium dioxide, Chemical detectors, Gas detectors, Ab-initio calculations, Adsorption (Chemistry)
Abstract: [Display omitted] • Oxygen-vacancy-engineered microporous TiO 2 is synthesized for high-performance CTL sensing. • Outstanding detection of isobutyraldehyde is achieved with a low detection limit of 3 μg/L. • Surface oxygen vacancies are demonstrated to promote the chemical adsorption of O 2 , a key step in the catalytic mechanism. • The surface-mediated enhancement mechanism is elucidated at the atomic level via DFT calculations. This study addresses the urgent demand for simple and sensitive online gas monitoring technologies in the field of environmental safety by developing a high-performance cataluminescence (CTL) sensor based on oxygen-vacancy-rich microporous titanium dioxide (Ovm-TiO 2) for detecting trace isobutyraldehyde (IBL). The Ovm-TiO 2 material, synthesized via a two-step heating process combined with a KBH 4 treatment, features abundant oxygen vacancy defects on its surface, which are pivotal to enhancing sensor performance. Density functional theory (DFT) calculations unravel the surface-mediated mechanism, the oxygen vacancies serve as active sites, drastically enhancing the chemical adsorption and activation of O 2 on the Ovm-TiO 2 surface, which is the key to boosting the cataluminescence efficiency. The developed sensor exhibits outstanding detection performance for IBL, with a wide linear range (0.0100–5.00 mg/L, R 2 = 0.9997), a low detection limit (3 μg/L), and achieved recovery rates of 87.6%–107% with good reproducibility (relative standard deviation, RSD: 5.3%–9.0%) in practical sample analysis. This work not only provides a viable online monitoring solution for IBL but also elucidates the CTL enhancement mechanism at the atomic level, offering important theoretical foundations and practical insights for designing highly sensitive gas sensors. [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
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 191979834
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Unveiling the role of oxygen vacancies: Micropore-rich Ovm-TiO2 nanocatalysts for enhanced cataluminescence detection of isobutyraldehyde.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Tang%2C+Shan%22">Tang, Shan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> tangshan@xynun.edu</i><br /><searchLink fieldCode="AR" term="%22He%2C+Jiumei%22">He, Jiumei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wan%2C+Chengcheng%22">Wan, Chengcheng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Jiang%2C+Li%22">Jiang, Li</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Qianchun%22">Zhang, Qianchun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> qianchunzhang@qq.com</i>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Applied+Surface+Science%22">Applied Surface Science</searchLink>. Jun2026, Vol. 730, pN.PAG-N.PAG. 1p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Oxygen+vacancy%22">Oxygen vacancy</searchLink><br /><searchLink fieldCode="DE" term="%22Titanium+dioxide%22">Titanium dioxide</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+detectors%22">Chemical detectors</searchLink><br /><searchLink fieldCode="DE" term="%22Gas+detectors%22">Gas detectors</searchLink><br /><searchLink fieldCode="DE" term="%22Ab-initio+calculations%22">Ab-initio calculations</searchLink><br /><searchLink fieldCode="DE" term="%22Adsorption+%28Chemistry%29%22">Adsorption (Chemistry)</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: [Display omitted] • Oxygen-vacancy-engineered microporous TiO 2 is synthesized for high-performance CTL sensing. • Outstanding detection of isobutyraldehyde is achieved with a low detection limit of 3 μg/L. • Surface oxygen vacancies are demonstrated to promote the chemical adsorption of O 2 , a key step in the catalytic mechanism. • The surface-mediated enhancement mechanism is elucidated at the atomic level via DFT calculations. This study addresses the urgent demand for simple and sensitive online gas monitoring technologies in the field of environmental safety by developing a high-performance cataluminescence (CTL) sensor based on oxygen-vacancy-rich microporous titanium dioxide (Ovm-TiO 2) for detecting trace isobutyraldehyde (IBL). The Ovm-TiO 2 material, synthesized via a two-step heating process combined with a KBH 4 treatment, features abundant oxygen vacancy defects on its surface, which are pivotal to enhancing sensor performance. Density functional theory (DFT) calculations unravel the surface-mediated mechanism, the oxygen vacancies serve as active sites, drastically enhancing the chemical adsorption and activation of O 2 on the Ovm-TiO 2 surface, which is the key to boosting the cataluminescence efficiency. The developed sensor exhibits outstanding detection performance for IBL, with a wide linear range (0.0100–5.00 mg/L, R 2 = 0.9997), a low detection limit (3 μg/L), and achieved recovery rates of 87.6%–107% with good reproducibility (relative standard deviation, RSD: 5.3%–9.0%) in practical sample analysis. This work not only provides a viable online monitoring solution for IBL but also elucidates the CTL enhancement mechanism at the atomic level, offering important theoretical foundations and practical insights for designing highly sensitive gas sensors. [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.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=191979834
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.apsusc.2026.166351
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Oxygen vacancy
        Type: general
      – SubjectFull: Titanium dioxide
        Type: general
      – SubjectFull: Chemical detectors
        Type: general
      – SubjectFull: Gas detectors
        Type: general
      – SubjectFull: Ab-initio calculations
        Type: general
      – SubjectFull: Adsorption (Chemistry)
        Type: general
    Titles:
      – TitleFull: Unveiling the role of oxygen vacancies: Micropore-rich Ovm-TiO2 nanocatalysts for enhanced cataluminescence detection of isobutyraldehyde.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Tang, Shan
      – PersonEntity:
          Name:
            NameFull: He, Jiumei
      – PersonEntity:
          Name:
            NameFull: Wan, Chengcheng
      – PersonEntity:
          Name:
            NameFull: Jiang, Li
      – PersonEntity:
          Name:
            NameFull: Zhang, Qianchun
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 06
              Text: Jun2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 01694332
          Numbering:
            – Type: volume
              Value: 730
          Titles:
            – TitleFull: Applied Surface Science
              Type: main
ResultId 1