Ze Du , Jianmei Pan , Chengfei Ma , Yi Guan , Maoxin Sun , Zimo Gao , Hua Tang , Xuehua Yan
{"title":"嵌入 ZnIn2S4 纳米片的 CdS 纳米棒构建 n-n 异质结,用于超高光催化产生 H2 和 H2O2","authors":"Ze Du , Jianmei Pan , Chengfei Ma , Yi Guan , Maoxin Sun , Zimo Gao , Hua Tang , Xuehua Yan","doi":"10.1016/j.colsurfa.2024.135774","DOIUrl":null,"url":null,"abstract":"<div><div>A series of n-n type CdS/ZnIn<sub>2</sub>S<sub>4</sub> photocatalysts with type-Ⅱ path were designed by building embedded interface to obtain ultrahigh photocatalytic performance. The CdS nanorods were equably embedded in ZnIn<sub>2</sub>S<sub>4</sub> nanosheets to form the one-dimensional/two-dimensional (1D/2D) heterostructure by a two-step synthesis method. Under the illumination of a 420 nm LED lamp, CdS/ZnIn<sub>2</sub>S<sub>4</sub> exhibits the optimal photocatalytic hydrogen production rate (33.3 mmol g<sup>−1</sup> h<sup>−1</sup>), which is 4.8 times that of pure ZnIn<sub>2</sub>S<sub>4</sub>. CdS/ZnIn<sub>2</sub>S<sub>4</sub> also displays the best photocatalytic H<sub>2</sub>O<sub>2</sub> production rate (1.36 mmol L<sup>−1</sup> h<sup>−1</sup>), which is 2.3 times higher than pure CdS and 3.8 times higher than pure ZnIn<sub>2</sub>S<sub>4</sub>. Moreover, it exhibits extremely high apparent quantum efficiency (31.71 % at 420 nm) for hydrogen production. This enhanced photocatalytic performance can be attributed to the construction of n-n type heterojunction with built-in electric field action, 1D/2D embedded interface and type-Ⅱ transfer path of photon-generated carriers, which can efficiently improve the light absorption ability, accelerate the spatial separation and transfer of carriers, and provide more active sites for H<sup>+</sup> reduction to H<sub>2</sub> and H<sub>2</sub>O<sub>2</sub>.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"706 ","pages":"Article 135774"},"PeriodicalIF":4.9000,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"CdS nanorods embedded in ZnIn2S4 nanosheets to construct n-n heterojunction for ultrahigh photocatalytic H2 and H2O2 production\",\"authors\":\"Ze Du , Jianmei Pan , Chengfei Ma , Yi Guan , Maoxin Sun , Zimo Gao , Hua Tang , Xuehua Yan\",\"doi\":\"10.1016/j.colsurfa.2024.135774\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>A series of n-n type CdS/ZnIn<sub>2</sub>S<sub>4</sub> photocatalysts with type-Ⅱ path were designed by building embedded interface to obtain ultrahigh photocatalytic performance. The CdS nanorods were equably embedded in ZnIn<sub>2</sub>S<sub>4</sub> nanosheets to form the one-dimensional/two-dimensional (1D/2D) heterostructure by a two-step synthesis method. Under the illumination of a 420 nm LED lamp, CdS/ZnIn<sub>2</sub>S<sub>4</sub> exhibits the optimal photocatalytic hydrogen production rate (33.3 mmol g<sup>−1</sup> h<sup>−1</sup>), which is 4.8 times that of pure ZnIn<sub>2</sub>S<sub>4</sub>. CdS/ZnIn<sub>2</sub>S<sub>4</sub> also displays the best photocatalytic H<sub>2</sub>O<sub>2</sub> production rate (1.36 mmol L<sup>−1</sup> h<sup>−1</sup>), which is 2.3 times higher than pure CdS and 3.8 times higher than pure ZnIn<sub>2</sub>S<sub>4</sub>. Moreover, it exhibits extremely high apparent quantum efficiency (31.71 % at 420 nm) for hydrogen production. This enhanced photocatalytic performance can be attributed to the construction of n-n type heterojunction with built-in electric field action, 1D/2D embedded interface and type-Ⅱ transfer path of photon-generated carriers, which can efficiently improve the light absorption ability, accelerate the spatial separation and transfer of carriers, and provide more active sites for H<sup>+</sup> reduction to H<sub>2</sub> and H<sub>2</sub>O<sub>2</sub>.</div></div>\",\"PeriodicalId\":278,\"journal\":{\"name\":\"Colloids and Surfaces A: Physicochemical and Engineering Aspects\",\"volume\":\"706 \",\"pages\":\"Article 135774\"},\"PeriodicalIF\":4.9000,\"publicationDate\":\"2024-11-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Colloids and Surfaces A: Physicochemical and Engineering Aspects\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0927775724026384\",\"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":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0927775724026384","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
CdS nanorods embedded in ZnIn2S4 nanosheets to construct n-n heterojunction for ultrahigh photocatalytic H2 and H2O2 production
A series of n-n type CdS/ZnIn2S4 photocatalysts with type-Ⅱ path were designed by building embedded interface to obtain ultrahigh photocatalytic performance. The CdS nanorods were equably embedded in ZnIn2S4 nanosheets to form the one-dimensional/two-dimensional (1D/2D) heterostructure by a two-step synthesis method. Under the illumination of a 420 nm LED lamp, CdS/ZnIn2S4 exhibits the optimal photocatalytic hydrogen production rate (33.3 mmol g−1 h−1), which is 4.8 times that of pure ZnIn2S4. CdS/ZnIn2S4 also displays the best photocatalytic H2O2 production rate (1.36 mmol L−1 h−1), which is 2.3 times higher than pure CdS and 3.8 times higher than pure ZnIn2S4. Moreover, it exhibits extremely high apparent quantum efficiency (31.71 % at 420 nm) for hydrogen production. This enhanced photocatalytic performance can be attributed to the construction of n-n type heterojunction with built-in electric field action, 1D/2D embedded interface and type-Ⅱ transfer path of photon-generated carriers, which can efficiently improve the light absorption ability, accelerate the spatial separation and transfer of carriers, and provide more active sites for H+ reduction to H2 and H2O2.
期刊介绍:
Colloids and Surfaces A: Physicochemical and Engineering Aspects is an international journal devoted to the science underlying applications of colloids and interfacial phenomena.
The journal aims at publishing high quality research papers featuring new materials or new insights into the role of colloid and interface science in (for example) food, energy, minerals processing, pharmaceuticals or the environment.