Strontium-Modified TiO2 Nanotubes for Efficient Photodegradation of Formic Acid

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dc.authoridYounas, Muhammad/0000-0001-5368-3341;
dc.contributor.authorAl Hajri, Eman
dc.contributor.authorAlrashedi, Wadha
dc.contributor.authorAlomair, Nuhad Abdullah
dc.contributor.authorAlabbad, Sanaa Saad
dc.contributor.authorYounas, Muhammad
dc.contributor.authoral Malih, Rasha Jubran
dc.contributor.authorAlzahrani, Asala
dc.date.accessioned2025-10-11T20:48:39Z
dc.date.available2025-10-11T20:48:39Z
dc.date.issued2025
dc.departmentDüzce Üniversitesien_US
dc.description.abstractThis study explores the enhancement of photocatalytic activity in one-dimensional TiO2 nanotubes (TiNT) through strontium (Sr) doping, using the incipient impregnation method to introduce Sr concentrations ranging from 0.2 to 1.0 wt%. The photocatalytic performance of the resulting xSr-TiNT composites was evaluated by examining the degradation of formic acid under UV irradiation. The materials were characterized using N2 physisorption, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), UV-vis, Raman spectroscopy, photoluminescence (PL), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The effective surface area was determined by XPS, revealing a significant increase in surface area with Sr loading, which correlates with enhanced photocatalytic performance. This enhancement in surface area is in agreement with the observed expansion of the unit cell volume in presence of Sr. Results show that a small amount of Sr (0.2 wt%) enhances the generation of oxygen vacancies and Ti3+ species, leading to increased photocatalytic activity. The degradation followed the Langmuir-Hinshelwood model, with the highest degradation rate observed at 0.8 wt% Sr, showing a 3.36-fold increase compared to pristine TiNT. At higher Sr concentrations, the proportion of oxygen vacancies and Ti3+ defects decreased due to the formation of Ti-O-Sr moieties. Additionally, the polarization effect induced by Sr doping improved charge separation, reducing electron-hole recombination and further enhancing photocatalytic efficiency. These findings emphasize the critical role of Sr concentration, effective surface area, and unit cell volume expansion in tuning the photocatalytic properties of TiO2 nanotubes, with an optimum Sr loading of 0.8 wt% leading to improved photocatalytic activity.en_US
dc.description.sponsorshipImam Abdulrahman Bin Faisal University [IF-2020-018-BASRC]en_US
dc.description.sponsorshipDeputyship for Research & Innovation, Ministry of Education in Saudi Arabiaen_US
dc.description.sponsorshipFinancial support was provided by the Deputyship for Research & Innovation, Ministry of Education in Saudi Arabia under project number (IF-2020-018-BASRC) at Imam Abdulrahman bin Faisal University's Basic and Applied Scientific Research Center (BASRC).en_US
dc.identifier.doi10.1007/s13369-025-10057-5
dc.identifier.issn2193-567X
dc.identifier.issn2191-4281
dc.identifier.scopus2-s2.0-86000789442en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1007/s13369-025-10057-5
dc.identifier.urihttps://hdl.handle.net/20.500.12684/22034
dc.identifier.wosWOS:001438317400001en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherSpringer Heidelbergen_US
dc.relation.ispartofArabian Journal For Scienceand Engineeringen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.snmzKA_WOS_20250911
dc.subjectStrontium speciesen_US
dc.subjectOxygen defectsen_US
dc.subjectNanotubesen_US
dc.subjectKineticsen_US
dc.subjectPhotodegradationen_US
dc.titleStrontium-Modified TiO2 Nanotubes for Efficient Photodegradation of Formic Aciden_US
dc.typeArticleen_US

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