发布求助

文献互助智能选刊最新文献

磁控溅射沉积法优化FeMnOx双金属助催化剂在掺锌BiVO4上光催化水氧化

IF 4.7 2区化学 Q2 CHEMISTRY, PHYSICAL

Applied Catalysis A: General Pub Date : 2025-05-29 DOI:10.1016/j.apcata.2025.120389

Niqab Khan , Ariadne Koche , Wahidullah Khan , Pallas A.M. Nogueira , Asif Jamil , Yvonne Pieper , Francesca M. Toma , Otaciro R. Nascimento , Renato V. Gonçalves , Sherdil Khan

{"title":"磁控溅射沉积法优化FeMnOx双金属助催化剂在掺锌BiVO4上光催化水氧化","authors":"Niqab Khan , Ariadne Koche , Wahidullah Khan , Pallas A.M. Nogueira , Asif Jamil , Yvonne Pieper , Francesca M. Toma , Otaciro R. Nascimento , Renato V. Gonçalves , Sherdil Khan","doi":"10.1016/j.apcata.2025.120389","DOIUrl":null,"url":null,"abstract":"<div><div>Bismuth vanadate (BiVO<sub>4</sub>) has been used as an efficient photocatalyst for water oxidation. However, pristine BiVO<sub>4</sub> suffers from recombination due to its short hole diffusion length and fast electron-hole recombination, which hinders photocatalytic water oxidation. To enhance the water photo-oxidation, here we constructed Zn-doped BiVO<sub>4</sub> and then deposited bimetallic FeMnO<sub>x</sub> on its surface via Magnetron Sputtering. Zn doping improved the optical absorption by red-shifting the bandgap of BiVO<sub>4</sub>. Crystalloghafically, it increased growth towards (040) direction and enhanced V-O bond lengths. Moreover, the Zn doping induces oxygen vacancies that suppress charge recombination, as confirmed by EPR analysis. Zn-doped BiVO<sub>4</sub> showed an incredible enhancement in the photocatalytic O<sub>2</sub> evolution of 135 μmol as compared to the pure BiVO<sub>4</sub> (90 μmol). The O<sub>2</sub> evolution was further enhanced to 154 µmol after loading bimetallic FeMnO<sub>x</sub> cocatalysts on Zn-doped BiVO<sub>4</sub>, which is attributed to the improved charge transportation via cocatalysts from the BiVO<sub>4</sub> surface.</div></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"704 ","pages":"Article 120389"},"PeriodicalIF":4.7000,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Optimizing photocatalytic water oxidation by FeMnOx bimetallic cocatalyst on Zn-doped BiVO4 via magnetron sputter deposition\",\"authors\":\"Niqab Khan , Ariadne Koche , Wahidullah Khan , Pallas A.M. Nogueira , Asif Jamil , Yvonne Pieper , Francesca M. Toma , Otaciro R. Nascimento , Renato V. Gonçalves , Sherdil Khan\",\"doi\":\"10.1016/j.apcata.2025.120389\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Bismuth vanadate (BiVO<sub>4</sub>) has been used as an efficient photocatalyst for water oxidation. However, pristine BiVO<sub>4</sub> suffers from recombination due to its short hole diffusion length and fast electron-hole recombination, which hinders photocatalytic water oxidation. To enhance the water photo-oxidation, here we constructed Zn-doped BiVO<sub>4</sub> and then deposited bimetallic FeMnO<sub>x</sub> on its surface via Magnetron Sputtering. Zn doping improved the optical absorption by red-shifting the bandgap of BiVO<sub>4</sub>. Crystalloghafically, it increased growth towards (040) direction and enhanced V-O bond lengths. Moreover, the Zn doping induces oxygen vacancies that suppress charge recombination, as confirmed by EPR analysis. Zn-doped BiVO<sub>4</sub> showed an incredible enhancement in the photocatalytic O<sub>2</sub> evolution of 135 μmol as compared to the pure BiVO<sub>4</sub> (90 μmol). The O<sub>2</sub> evolution was further enhanced to 154 µmol after loading bimetallic FeMnO<sub>x</sub> cocatalysts on Zn-doped BiVO<sub>4</sub>, which is attributed to the improved charge transportation via cocatalysts from the BiVO<sub>4</sub> surface.</div></div>\",\"PeriodicalId\":243,\"journal\":{\"name\":\"Applied Catalysis A: General\",\"volume\":\"704 \",\"pages\":\"Article 120389\"},\"PeriodicalIF\":4.7000,\"publicationDate\":\"2025-05-29\",\"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/S0926860X2500290X\",\"RegionNum\":2,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Catalysis A: General","FirstCategoryId":"1","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0926860X2500290X","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

摘要

钒酸铋（BiVO4）是一种高效的水氧化光催化剂。然而，原始BiVO4由于其空穴扩散长度短，电子-空穴复合速度快，容易发生复合，阻碍了光催化水氧化。为了增强水的光氧化能力，我们构建了掺杂锌的BiVO4，然后通过磁控溅射在其表面沉积了双金属FeMnOx。锌掺杂通过红移BiVO4的带隙改善了BiVO4的光学吸收。在晶体结构上，它增加了向（040）方向的生长，增加了V-O键的长度。此外，EPR分析证实，锌掺杂诱导氧空位抑制电荷复合。与纯BiVO4 （90 μmol）相比，zn掺杂的BiVO4在135 μmol的光催化O2演化中表现出令人难以置信的增强。在BiVO4上加载双金属FeMnOx助催化剂后，O2的析出量进一步提高到154µmol，这是由于助催化剂改善了BiVO4表面的电荷传输。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Optimizing photocatalytic water oxidation by FeMnOx bimetallic cocatalyst on Zn-doped BiVO4 via magnetron sputter deposition

Bismuth vanadate (BiVO₄) has been used as an efficient photocatalyst for water oxidation. However, pristine BiVO₄ suffers from recombination due to its short hole diffusion length and fast electron-hole recombination, which hinders photocatalytic water oxidation. To enhance the water photo-oxidation, here we constructed Zn-doped BiVO₄ and then deposited bimetallic FeMnO_x on its surface via Magnetron Sputtering. Zn doping improved the optical absorption by red-shifting the bandgap of BiVO₄. Crystalloghafically, it increased growth towards (040) direction and enhanced V-O bond lengths. Moreover, the Zn doping induces oxygen vacancies that suppress charge recombination, as confirmed by EPR analysis. Zn-doped BiVO₄ showed an incredible enhancement in the photocatalytic O₂ evolution of 135 μmol as compared to the pure BiVO₄ (90 μmol). The O₂ evolution was further enhanced to 154 µmol after loading bimetallic FeMnO_x cocatalysts on Zn-doped BiVO₄, which is attributed to the improved charge transportation via cocatalysts from the BiVO₄ surface.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Applied Catalysis A: General

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.

联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1

京公网安备 11010802042870号

Book学术文献互助

Book学术文献互助群
群号：604180095

Book学术官方微信