Wenhui Hu, Zhongxin Song, Lingna Sun, Lei Zhang, Qianling Zhang, Xiangzhong Ren and Yongliang Li
{"title":"原子层沉积修饰MIL-100（Fe）的TiO2/CoOx异质结构增强光催化制氧","authors":"Wenhui Hu, Zhongxin Song, Lingna Sun, Lei Zhang, Qianling Zhang, Xiangzhong Ren and Yongliang Li","doi":"10.1039/D4DT02829E","DOIUrl":null,"url":null,"abstract":"<p >Efficient separation of photogenerated charge carriers is essential for maximizing the photocatalytic efficiency of semiconductor materials in oxygen evolution reactions (OER). This study presents a novel trimetallic photocatalyst, MIL-100(Fe)/TiO<small><sub>2</sub></small>/CoO<small><sub><em>x</em></sub></small>, synthesized through a facile microwave-assisted hydrothermal method followed by atomic layer deposition (ALD). The porous MIL-100(Fe) serves as a support for the sequential deposition of TiO<small><sub>2</sub></small> and CoO<small><sub><em>x</em></sub></small> layers <em>via</em> ALD, which enhances electron–hole pair separation and minimizes their recombination. Characterization using transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS) confirms the uniform deposition of TiO<small><sub>2</sub></small> and CoO<small><sub><em>x</em></sub></small> layers on the MIL-100(Fe) surface. The optimized photocatalyst, processed with 20 deposition cycles of Co, exhibits exceptional photocatalytic OER performance, with an oxygen evolution rate of 558.3 μmol g<small><sup>−1</sup></small> h<small><sup>−1</sup></small>. This enhancement in activity is attributed to the synergistic interaction between the spatially separated TiO<small><sub>2</sub></small> and CoO<small><sub><em>x</em></sub></small> cocatalysts, which facilitates efficient charge transfer and increases the number of active sites. These findings highlight the potential of ALD-fabricated heterostructures in the development of advanced photocatalysts for sustainable energy production.</p>","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":" 8","pages":" 3467-3477"},"PeriodicalIF":3.3000,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"TiO2/CoOx heterostructure decorated MIL-100(Fe) by atomic layer deposition for enhanced photocatalytic oxygen production†\",\"authors\":\"Wenhui Hu, Zhongxin Song, Lingna Sun, Lei Zhang, Qianling Zhang, Xiangzhong Ren and Yongliang Li\",\"doi\":\"10.1039/D4DT02829E\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >Efficient separation of photogenerated charge carriers is essential for maximizing the photocatalytic efficiency of semiconductor materials in oxygen evolution reactions (OER). This study presents a novel trimetallic photocatalyst, MIL-100(Fe)/TiO<small><sub>2</sub></small>/CoO<small><sub><em>x</em></sub></small>, synthesized through a facile microwave-assisted hydrothermal method followed by atomic layer deposition (ALD). The porous MIL-100(Fe) serves as a support for the sequential deposition of TiO<small><sub>2</sub></small> and CoO<small><sub><em>x</em></sub></small> layers <em>via</em> ALD, which enhances electron–hole pair separation and minimizes their recombination. Characterization using transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS) confirms the uniform deposition of TiO<small><sub>2</sub></small> and CoO<small><sub><em>x</em></sub></small> layers on the MIL-100(Fe) surface. The optimized photocatalyst, processed with 20 deposition cycles of Co, exhibits exceptional photocatalytic OER performance, with an oxygen evolution rate of 558.3 μmol g<small><sup>−1</sup></small> h<small><sup>−1</sup></small>. This enhancement in activity is attributed to the synergistic interaction between the spatially separated TiO<small><sub>2</sub></small> and CoO<small><sub><em>x</em></sub></small> cocatalysts, which facilitates efficient charge transfer and increases the number of active sites. These findings highlight the potential of ALD-fabricated heterostructures in the development of advanced photocatalysts for sustainable energy production.</p>\",\"PeriodicalId\":71,\"journal\":{\"name\":\"Dalton Transactions\",\"volume\":\" 8\",\"pages\":\" 3467-3477\"},\"PeriodicalIF\":3.3000,\"publicationDate\":\"2025-01-21\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Dalton Transactions\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://pubs.rsc.org/en/content/articlelanding/2025/dt/d4dt02829e\",\"RegionNum\":3,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, INORGANIC & NUCLEAR\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Dalton Transactions","FirstCategoryId":"92","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2025/dt/d4dt02829e","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
TiO2/CoOx heterostructure decorated MIL-100(Fe) by atomic layer deposition for enhanced photocatalytic oxygen production†
Efficient separation of photogenerated charge carriers is essential for maximizing the photocatalytic efficiency of semiconductor materials in oxygen evolution reactions (OER). This study presents a novel trimetallic photocatalyst, MIL-100(Fe)/TiO2/CoOx, synthesized through a facile microwave-assisted hydrothermal method followed by atomic layer deposition (ALD). The porous MIL-100(Fe) serves as a support for the sequential deposition of TiO2 and CoOx layers via ALD, which enhances electron–hole pair separation and minimizes their recombination. Characterization using transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS) confirms the uniform deposition of TiO2 and CoOx layers on the MIL-100(Fe) surface. The optimized photocatalyst, processed with 20 deposition cycles of Co, exhibits exceptional photocatalytic OER performance, with an oxygen evolution rate of 558.3 μmol g−1 h−1. This enhancement in activity is attributed to the synergistic interaction between the spatially separated TiO2 and CoOx cocatalysts, which facilitates efficient charge transfer and increases the number of active sites. These findings highlight the potential of ALD-fabricated heterostructures in the development of advanced photocatalysts for sustainable energy production.
期刊介绍：
Dalton Transactions is a journal for all areas of inorganic chemistry, which encompasses the organometallic, bioinorganic and materials chemistry of the elements, with applications including synthesis, catalysis, energy conversion/storage, electrical devices and medicine. Dalton Transactions welcomes high-quality, original submissions in all of these areas and more, where the advancement of knowledge in inorganic chemistry is significant.
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