Yijin Qin, Yan Li, Liang Wei, Meng Li, Hongxi Zhang, Jing Yang, Xiande Yang
{"title":"优化二硫化钼的电子密度以提高光催化制氢性能","authors":"Yijin Qin, Yan Li, Liang Wei, Meng Li, Hongxi Zhang, Jing Yang, Xiande Yang","doi":"10.1007/s10562-024-04816-6","DOIUrl":null,"url":null,"abstract":"<div><p>The heterojunction construction through the effective combination of two metal sulfides can significantly improve the photocatalytic performance in the visible light region. In order to improve the photocatalytic efficiency of molybdenum disulfide (MoS<sub>2</sub>), we synthesized a series of CdS/MoS<sub>2</sub> (CM) composites using a simple hydrothermal method. Their photocatalytic activities were evaluated by the photocatalytic hydrogen production. The results showed that the photocatalytic hydrogen production rate of CM composites was significantly enhanced after visible light irradiation, which was attributed to the improvement of visible light absorption capacity, efficient separation of photogenerated carriers, strong photocurrent response, and fast charge mobility. What’s more, sample CM-3 exhibited the highest photocatalytic hydrogen production efficiency of 2809.4 μmol g<sup>−1</sup> h<sup>−1</sup> compared to pure MoS<sub>2</sub> (0 μmol g<sup>−1</sup> h<sup>−1</sup>) and CdS (81.5 μmol g<sup>−1</sup> h<sup>−1</sup>). Therefore, the successful construction of heterojunction can accumulate much more photogenerated electrons for MoS<sub>2</sub>, which is favorable to enhance its photocatalytic hydrogen production. This study provides strong evidence that heterojunction construction can obviously improve the photocatalytic activity.</p><h3>Graphical Abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div><div><p>Photocatalytic H2 production of CM-3 composite. MoS2 constructed heterojunction with CdS can effectively improve the photocatalytic activity. The photocatalytic H2 production rate of CdS/MoS2 composite can reach 2809.4 μmol g-1 h-1</p></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":null,"pages":null},"PeriodicalIF":2.3000,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Electron Density Optimization of Molybdenum Disulfide for Enhanced Photocatalytic Hydrogen Production Performance\",\"authors\":\"Yijin Qin, Yan Li, Liang Wei, Meng Li, Hongxi Zhang, Jing Yang, Xiande Yang\",\"doi\":\"10.1007/s10562-024-04816-6\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The heterojunction construction through the effective combination of two metal sulfides can significantly improve the photocatalytic performance in the visible light region. In order to improve the photocatalytic efficiency of molybdenum disulfide (MoS<sub>2</sub>), we synthesized a series of CdS/MoS<sub>2</sub> (CM) composites using a simple hydrothermal method. Their photocatalytic activities were evaluated by the photocatalytic hydrogen production. The results showed that the photocatalytic hydrogen production rate of CM composites was significantly enhanced after visible light irradiation, which was attributed to the improvement of visible light absorption capacity, efficient separation of photogenerated carriers, strong photocurrent response, and fast charge mobility. What’s more, sample CM-3 exhibited the highest photocatalytic hydrogen production efficiency of 2809.4 μmol g<sup>−1</sup> h<sup>−1</sup> compared to pure MoS<sub>2</sub> (0 μmol g<sup>−1</sup> h<sup>−1</sup>) and CdS (81.5 μmol g<sup>−1</sup> h<sup>−1</sup>). Therefore, the successful construction of heterojunction can accumulate much more photogenerated electrons for MoS<sub>2</sub>, which is favorable to enhance its photocatalytic hydrogen production. This study provides strong evidence that heterojunction construction can obviously improve the photocatalytic activity.</p><h3>Graphical Abstract</h3>\\n<div><figure><div><div><picture><source><img></source></picture></div><div><p>Photocatalytic H2 production of CM-3 composite. MoS2 constructed heterojunction with CdS can effectively improve the photocatalytic activity. The photocatalytic H2 production rate of CdS/MoS2 composite can reach 2809.4 μmol g-1 h-1</p></div></div></figure></div></div>\",\"PeriodicalId\":508,\"journal\":{\"name\":\"Catalysis Letters\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.3000,\"publicationDate\":\"2024-09-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Catalysis Letters\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10562-024-04816-6\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Catalysis Letters","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s10562-024-04816-6","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Electron Density Optimization of Molybdenum Disulfide for Enhanced Photocatalytic Hydrogen Production Performance
The heterojunction construction through the effective combination of two metal sulfides can significantly improve the photocatalytic performance in the visible light region. In order to improve the photocatalytic efficiency of molybdenum disulfide (MoS2), we synthesized a series of CdS/MoS2 (CM) composites using a simple hydrothermal method. Their photocatalytic activities were evaluated by the photocatalytic hydrogen production. The results showed that the photocatalytic hydrogen production rate of CM composites was significantly enhanced after visible light irradiation, which was attributed to the improvement of visible light absorption capacity, efficient separation of photogenerated carriers, strong photocurrent response, and fast charge mobility. What’s more, sample CM-3 exhibited the highest photocatalytic hydrogen production efficiency of 2809.4 μmol g−1 h−1 compared to pure MoS2 (0 μmol g−1 h−1) and CdS (81.5 μmol g−1 h−1). Therefore, the successful construction of heterojunction can accumulate much more photogenerated electrons for MoS2, which is favorable to enhance its photocatalytic hydrogen production. This study provides strong evidence that heterojunction construction can obviously improve the photocatalytic activity.
Graphical Abstract
Photocatalytic H2 production of CM-3 composite. MoS2 constructed heterojunction with CdS can effectively improve the photocatalytic activity. The photocatalytic H2 production rate of CdS/MoS2 composite can reach 2809.4 μmol g-1 h-1
期刊介绍：
Catalysis Letters aim is the rapid publication of outstanding and high-impact original research articles in catalysis. The scope of the journal covers a broad range of topics in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis.
The high-quality original research articles published in Catalysis Letters are subject to rigorous peer review. Accepted papers are published online first and subsequently in print issues. All contributions must include a graphical abstract. Manuscripts should be written in English and the responsibility lies with the authors to ensure that they are grammatically and linguistically correct. Authors for whom English is not the working language are encouraged to consider using a professional language-editing service before submitting their manuscripts.
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