Fabricating a Three-Dimensional Surface-Enhanced Raman Scattering Substrate Using Hydrogel-Loaded Freeze-Induced Silver Nanoparticle Aggregates for the Highly Sensitive Detection of Organic Pollutants in Seawater
文献类型：期刊论文
| 作者 | Liu, Hai2; Hu, Yufeng2; Zhang, Zhiyang1 |
| 刊名 | SENSORS
 |
| 出版日期 | 2025-04-18 |
| 卷号 | 25期号:8页码:13 |
| 关键词 | surface-enhanced Raman scattering (SERS) 3D SERS substrate hydrogel highly sensitive uniformity seawater detection |
| DOI | 10.3390/s25082575 |
| 通讯作者 | Hu, Yufeng(yufenghu@dlut.edu.cn) ; Zhang, Zhiyang(zyzhang@yic.ac.cn) |
| 英文摘要 | Surface-enhanced Raman scattering (SERS) spectroscopy faces challenges in achieving both high sensitivity and reproducibility for the detection of real samples, particularly in high-salinity matrices. In this study, we developed a high-performance, salt-resistant three-dimensional (3D) SERS substrate by integrating physically induced colloidal silver nanoparticle aggregates (AgNAs) with an agarose hydrogel. AgNAs were prepared using a freeze-thaw-ultrasonication method to minimize interference in SERS signals while significantly enhancing the detection efficiency of trace pollutants. The incorporation of the agarose hydrogel not only improved the substrate's pollutant enrichment capability, but also effectively prevented the aggregation and sedimentation of AgNAs in salt solutions. The developed SERS substrate exhibited an ultralow detection limit of 10-12 M for Nile Blue (NB), with a 100-fold increase in sensitivity compared to colloidal AgNAs and drop-cast AgNAs solid substrates. The analytical enhancement factor (AEF) for malachite green (MG) achieved a value of 1.4 x 107. Furthermore, the substrate demonstrated excellent signal uniformity, with a relative standard deviation (RSD) of 6.74% within a 200 mu m x 200 mu m detection area and also show a satisfactory RSD of only 9.38% within a larger area of 1 mm x 1 mm. Notably, the 3D SERS substrate exhibited excellent stability under high-salinity conditions (0.5 M NaCl) and successfully detected a model pollutant (MG) in real seawater samples using the standard addition method. This study provides a novel strategy for highly sensitive SERS detection of trace pollutants in saline environments, offering promising applications in environmental monitoring and marine pollution analysis. |
| WOS关键词 | SERS SUBSTRATE |
| WOS研究方向 | Chemistry ; Engineering ; Instruments & Instrumentation |
| 语种 | 英语 |
| WOS记录号 | WOS:001475616400001 |
| 资助机构 | Key Deployment Project of the Centre for Ocean Mega-Research of Science, Chinese Academy of Sciences ; National Natural Science Foundation of China ; Taishan Scholars Program ; Natural Science Foundation of Shandong Province ; Special Fund for the Scholar Program of Yantai |
| 源URL | [http://ir.yic.ac.cn/handle/133337/40873]  |
| 专题 | 烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室 |
| 通讯作者 | Hu, Yufeng; Zhang, Zhiyang |
| 作者单位 | 1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Coastal Zone Ecol Environm Monitoring Technol & Eq, Shandong Key Lab Coastal Environm Proc,CAS Key Lab, Yantai 264003, Peoples R China 2.Dalian Univ Technol, Sch Chem Engn Ocean & Life Sci, Panjin 124221, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Hai,Hu, Yufeng,Zhang, Zhiyang. Fabricating a Three-Dimensional Surface-Enhanced Raman Scattering Substrate Using Hydrogel-Loaded Freeze-Induced Silver Nanoparticle Aggregates for the Highly Sensitive Detection of Organic Pollutants in Seawater[J]. SENSORS,2025,25(8):13. |
| APA | Liu, Hai,Hu, Yufeng,&Zhang, Zhiyang.(2025).Fabricating a Three-Dimensional Surface-Enhanced Raman Scattering Substrate Using Hydrogel-Loaded Freeze-Induced Silver Nanoparticle Aggregates for the Highly Sensitive Detection of Organic Pollutants in Seawater.SENSORS,25(8),13. |
| MLA | Liu, Hai,et al."Fabricating a Three-Dimensional Surface-Enhanced Raman Scattering Substrate Using Hydrogel-Loaded Freeze-Induced Silver Nanoparticle Aggregates for the Highly Sensitive Detection of Organic Pollutants in Seawater".SENSORS 25.8(2025):13. |
入库方式： OAI收割
来源：烟台海岸带研究所
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