Xue-Li Yang , Min Qiu , Zi-Xuan Zhao , Ling Chen , Jun Du , Xing Fan , Bing-Xin Lei , Zhao-Qing Liu
{"title":"在酒精水溶液中原位生长 Cs3Bi2Br9/BiOBr S 型异质结以提高光催化活性","authors":"Xue-Li Yang , Min Qiu , Zi-Xuan Zhao , Ling Chen , Jun Du , Xing Fan , Bing-Xin Lei , Zhao-Qing Liu","doi":"10.1016/j.apcata.2024.119899","DOIUrl":null,"url":null,"abstract":"<div><p>Heterojunction fabrication is a general and practical method for producing high-efficiency photocatalysts. The photocatalyst of S-type heterojunction greatly improves the carrier separation efficiency to a certain extent, thereby promoting the degradation efficiency. In this work, we reported a unique S-scheme heterojunction photocatalyst composed of n-type Cs<sub>3</sub>Bi<sub>2</sub>Br<sub>9</sub> (CBB) and p-type BiOBr with well-defined junction interfaces for photocatalytic degradation of Rhodamine B (RhB). By soaking CBB in an aqueous alcohol solution, the desirable BiOBr/CBB heterostructure was created <em>in-situ</em>, forming the intimate interfaces and facilitating the separation of photogenerated charge carriers. Compared with the pristine CBB, a substantial enhancement in photocatalytic performance of BiOBr/CBB heterostructure was achieved through an optimized water treatment. The results showed that the degradation efficiency of the optimal BiOBr/CBB heterostructure reached 98.55 % in 20 min.</p></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":"685 ","pages":"Article 119899"},"PeriodicalIF":4.7000,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"In situ growth of Cs3Bi2Br9/BiOBr S-scheme heterojunction in alcohol aqueous solution for boosting photocatalytic activity\",\"authors\":\"Xue-Li Yang , Min Qiu , Zi-Xuan Zhao , Ling Chen , Jun Du , Xing Fan , Bing-Xin Lei , Zhao-Qing Liu\",\"doi\":\"10.1016/j.apcata.2024.119899\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Heterojunction fabrication is a general and practical method for producing high-efficiency photocatalysts. The photocatalyst of S-type heterojunction greatly improves the carrier separation efficiency to a certain extent, thereby promoting the degradation efficiency. In this work, we reported a unique S-scheme heterojunction photocatalyst composed of n-type Cs<sub>3</sub>Bi<sub>2</sub>Br<sub>9</sub> (CBB) and p-type BiOBr with well-defined junction interfaces for photocatalytic degradation of Rhodamine B (RhB). By soaking CBB in an aqueous alcohol solution, the desirable BiOBr/CBB heterostructure was created <em>in-situ</em>, forming the intimate interfaces and facilitating the separation of photogenerated charge carriers. Compared with the pristine CBB, a substantial enhancement in photocatalytic performance of BiOBr/CBB heterostructure was achieved through an optimized water treatment. The results showed that the degradation efficiency of the optimal BiOBr/CBB heterostructure reached 98.55 % in 20 min.</p></div>\",\"PeriodicalId\":243,\"journal\":{\"name\":\"Applied Catalysis A: General\",\"volume\":\"685 \",\"pages\":\"Article 119899\"},\"PeriodicalIF\":4.7000,\"publicationDate\":\"2024-07-31\",\"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/S0926860X24003442\",\"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/S0926860X24003442","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
异质结制造是生产高效光催化剂的一种通用而实用的方法。S 型异质结光催化剂在一定程度上大大提高了载流子分离效率，从而提高了降解效率。在这项工作中，我们报道了一种独特的 S 型异质结光催化剂，它由 n 型 Cs3Bi2Br9（CBB）和 p 型 BiOBr 组成，具有明确的结界面，可用于光催化降解罗丹明 B（RhB）。通过将 CBB 浸泡在酒精水溶液中，在原位形成了理想的 BiOBr/CBB 异质结构，形成了亲密的界面，促进了光生电荷载流子的分离。与原始 CBB 相比，通过优化水处理，BiOBr/CBB 异质结构的光催化性能得到了大幅提高。结果表明，最佳 BiOBr/CBB 异质结构在 20 分钟内的降解效率达到 98.55%。
In situ growth of Cs3Bi2Br9/BiOBr S-scheme heterojunction in alcohol aqueous solution for boosting photocatalytic activity
Heterojunction fabrication is a general and practical method for producing high-efficiency photocatalysts. The photocatalyst of S-type heterojunction greatly improves the carrier separation efficiency to a certain extent, thereby promoting the degradation efficiency. In this work, we reported a unique S-scheme heterojunction photocatalyst composed of n-type Cs3Bi2Br9 (CBB) and p-type BiOBr with well-defined junction interfaces for photocatalytic degradation of Rhodamine B (RhB). By soaking CBB in an aqueous alcohol solution, the desirable BiOBr/CBB heterostructure was created in-situ, forming the intimate interfaces and facilitating the separation of photogenerated charge carriers. Compared with the pristine CBB, a substantial enhancement in photocatalytic performance of BiOBr/CBB heterostructure was achieved through an optimized water treatment. The results showed that the degradation efficiency of the optimal BiOBr/CBB heterostructure reached 98.55 % in 20 min.
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.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
