Modification of TiO2 anatase-rutile mixed-phase properties using Sn4+ doping for photocatalytic brilliant green degradation

IF 4.7 2区化学 Q2 CHEMISTRY, PHYSICAL

Applied Catalysis A: General Pub Date : 2025-02-16 DOI:10.1016/j.apcata.2025.120166

Dorah Kawira Muthee , Francis Birhanu Dejene , Lawrence Kioko Munguti

{"title":"Modification of TiO2 anatase-rutile mixed-phase properties using Sn4+ doping for photocatalytic brilliant green degradation","authors":"Dorah Kawira Muthee , Francis Birhanu Dejene , Lawrence Kioko Munguti","doi":"10.1016/j.apcata.2025.120166","DOIUrl":null,"url":null,"abstract":"<div><div>Compared to single-phase, the anatase-rutile TiO<sub>2</sub> phase has piqued researchers' interest. Incorporating a dopant into the microstructures of TiO<sub>2</sub> improves its properties. In contrast to the annealing method, incorporating Sn<sup>4+</sup> into the lattice of TiO<sub>2</sub> allows the transformation from anatase to rutile at low temperature. The findings showed that ions containing the sulfate Sn<sup>4+</sup> substituted that of Ti<sup>4+</sup> in the TiO<sub>2</sub> lattice and dispersed in the matrix. The substitution caused the lattice structure to deform at low temperatures, causing the transformation of the phases. The increase in the mol% of Sn in TiO<sub>2</sub> lattice favored the rutile phase content. The narrowing of the bandgap caused by Sn doping significantly increases photocatalytic operation in the visible light. Consequently, near-contact phase junctions in between the anatase and rutile phase have been established, taking into consideration the charge separations. The sample at 5.5 mol% of Sn exhibited the highest photoactivity.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"695 ","pages":"Article 120166"},"PeriodicalIF":4.7000,"publicationDate":"2025-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Catalysis A: General","FirstCategoryId":"1","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0926860X25000675","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}

引用次数: 0

Abstract

Compared to single-phase, the anatase-rutile TiO₂ phase has piqued researchers' interest. Incorporating a dopant into the microstructures of TiO₂ improves its properties. In contrast to the annealing method, incorporating Sn⁴⁺ into the lattice of TiO₂ allows the transformation from anatase to rutile at low temperature. The findings showed that ions containing the sulfate Sn⁴⁺ substituted that of Ti⁴⁺ in the TiO₂ lattice and dispersed in the matrix. The substitution caused the lattice structure to deform at low temperatures, causing the transformation of the phases. The increase in the mol% of Sn in TiO₂ lattice favored the rutile phase content. The narrowing of the bandgap caused by Sn doping significantly increases photocatalytic operation in the visible light. Consequently, near-contact phase junctions in between the anatase and rutile phase have been established, taking into consideration the charge separations. The sample at 5.5 mol% of Sn exhibited the highest photoactivity.

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Applied Catalysis A: General 化学-环境科学

CiteScore

9.00

自引率

5.50%

发文量

415

审稿时长

24 days

期刊介绍： Applied Catalysis A: General publishes original papers on all aspects of catalysis of basic and practical interest to chemical scientists in both industrial and academic fields, with an emphasis onnew understanding of catalysts and catalytic reactions, new catalytic materials, new techniques, and new processes, especially those that have potential practical implications. Papers that report results of a thorough study or optimization of systems or processes that are well understood, widely studied, or minor variations of known ones are discouraged. Authors should include statements in a separate section "Justification for Publication" of how the manuscript fits the scope of the journal in the cover letter to the editors. Submissions without such justification will be rejected without review.