{"title":"可回收的 MXene 薄膜作为 SERS 传感器,具有高灵敏度和灵活性,可与 ZnO 量子点进行调整","authors":"","doi":"10.1016/j.snb.2024.136685","DOIUrl":null,"url":null,"abstract":"<div><div>Developing flexible substrates with high sensitivity, good reproducibility and recyclability is a major challenge in surface enhanced Raman scattering (SERS) research. Herein, we prepare a recyclable Ti<sub>3</sub>C<sub>2</sub> MXene/ZnO quantum dots (Ti<sub>3</sub>C<sub>2</sub>/ZnO) heterostructure film as an efficient SERS sensor with remarkable flexibility using vacuum assisted filtration technique. Benefiting from the more charge transfer (CT) paths, higher CT efficiency provided by oxygen vacancies (OVs) in ZnO QDs and Schottky barrier between Ti<sub>3</sub>C<sub>2</sub> and ZnO QDs, the limit of detection (LOD) for 4-mercaptopyridine (4-MPY) molecules was as low as 1×10<sup>−7</sup> M. In addition, the prepared flexible SERS film provided uniform and stable signals for both temporal (storage at room temperature for 60 days) and spatial (RSD = 10.7 %) scales due to the optimal distribution of ZnO QDs in the macroscopic assembly of Ti<sub>3</sub>C<sub>2</sub>/ZnO hybrid with excellent reliability and durability. Moreover, the prepared novel flexible SERS sensor achieved self-cleaning by photocatalytically degrading methylene blue (MB) residues extracted from the surface of orange peels and showed exceptional reusability during the detection process. Thus, this high-efficiency and low-cost flexible recyclable SERS sensor may be useful for the in-situ molecular detection in food security and environmental protection.</div></div>","PeriodicalId":425,"journal":{"name":"Sensors and Actuators B: Chemical","volume":null,"pages":null},"PeriodicalIF":8.0000,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Recyclable MXene film as SERS sensor with high sensitivity and flexibility adjusted with ZnO quantum dots\",\"authors\":\"\",\"doi\":\"10.1016/j.snb.2024.136685\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Developing flexible substrates with high sensitivity, good reproducibility and recyclability is a major challenge in surface enhanced Raman scattering (SERS) research. Herein, we prepare a recyclable Ti<sub>3</sub>C<sub>2</sub> MXene/ZnO quantum dots (Ti<sub>3</sub>C<sub>2</sub>/ZnO) heterostructure film as an efficient SERS sensor with remarkable flexibility using vacuum assisted filtration technique. Benefiting from the more charge transfer (CT) paths, higher CT efficiency provided by oxygen vacancies (OVs) in ZnO QDs and Schottky barrier between Ti<sub>3</sub>C<sub>2</sub> and ZnO QDs, the limit of detection (LOD) for 4-mercaptopyridine (4-MPY) molecules was as low as 1×10<sup>−7</sup> M. In addition, the prepared flexible SERS film provided uniform and stable signals for both temporal (storage at room temperature for 60 days) and spatial (RSD = 10.7 %) scales due to the optimal distribution of ZnO QDs in the macroscopic assembly of Ti<sub>3</sub>C<sub>2</sub>/ZnO hybrid with excellent reliability and durability. Moreover, the prepared novel flexible SERS sensor achieved self-cleaning by photocatalytically degrading methylene blue (MB) residues extracted from the surface of orange peels and showed exceptional reusability during the detection process. Thus, this high-efficiency and low-cost flexible recyclable SERS sensor may be useful for the in-situ molecular detection in food security and environmental protection.</div></div>\",\"PeriodicalId\":425,\"journal\":{\"name\":\"Sensors and Actuators B: Chemical\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":8.0000,\"publicationDate\":\"2024-09-24\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Sensors and Actuators B: Chemical\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0925400524014151\",\"RegionNum\":1,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, ANALYTICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Sensors and Actuators B: Chemical","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0925400524014151","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, ANALYTICAL","Score":null,"Total":0}
Recyclable MXene film as SERS sensor with high sensitivity and flexibility adjusted with ZnO quantum dots
Developing flexible substrates with high sensitivity, good reproducibility and recyclability is a major challenge in surface enhanced Raman scattering (SERS) research. Herein, we prepare a recyclable Ti3C2 MXene/ZnO quantum dots (Ti3C2/ZnO) heterostructure film as an efficient SERS sensor with remarkable flexibility using vacuum assisted filtration technique. Benefiting from the more charge transfer (CT) paths, higher CT efficiency provided by oxygen vacancies (OVs) in ZnO QDs and Schottky barrier between Ti3C2 and ZnO QDs, the limit of detection (LOD) for 4-mercaptopyridine (4-MPY) molecules was as low as 1×10−7 M. In addition, the prepared flexible SERS film provided uniform and stable signals for both temporal (storage at room temperature for 60 days) and spatial (RSD = 10.7 %) scales due to the optimal distribution of ZnO QDs in the macroscopic assembly of Ti3C2/ZnO hybrid with excellent reliability and durability. Moreover, the prepared novel flexible SERS sensor achieved self-cleaning by photocatalytically degrading methylene blue (MB) residues extracted from the surface of orange peels and showed exceptional reusability during the detection process. Thus, this high-efficiency and low-cost flexible recyclable SERS sensor may be useful for the in-situ molecular detection in food security and environmental protection.
期刊介绍:
Sensors & Actuators, B: Chemical is an international journal focused on the research and development of chemical transducers. It covers chemical sensors and biosensors, chemical actuators, and analytical microsystems. The journal is interdisciplinary, aiming to publish original works showcasing substantial advancements beyond the current state of the art in these fields, with practical applicability to solving meaningful analytical problems. Review articles are accepted by invitation from an Editor of the journal.