Reduced graphene oxide-carbon nanotubes nanocomposites-decorated porous silver nanodendrites for highly efficient SERS sensing

IF 4.2 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Optical Materials Pub Date : 2025-05-01 Epub Date: 2025-03-13 DOI:10.1016/j.optmat.2025.116935

Nguyen Thi Huyen , Luong Truc Quynh Ngan , Le Thi Quynh Xuan , Tran Ai Suong Suong , Cao Thi Thanh , Nguyen Van Tu , Pham Thanh Binh , Tran Van Tan , Nguyen Viet Tuyen , Dao Tran Cao , Pham Van Hai , Vu Xuan Hoa , Nguyen Van Chuc

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Abstract

In this study, an innovative nanocomposite of reduced graphene oxide-carbon nanotubes/porous silver dendrites (rGO-CNTs/pAgDs) was formed on silicon substrate using a straightforward plasma jet technique. This nanocomposite was employed as a surface-enhanced Raman scattering (SERS) substrate to detect hazardous pollutants, including rhodamine 6G (R6G) and pesticide residues like malathion (MAL). For R6G probe, the SERS substrate exhibited a good enhancement factor (EF) of 1.68 × 10⁷ and a low detection limit (LOD) of 2.43 × 10⁻¹³ M. Moreover, this SERS substrate owned a good stability for the SERS intensity which was reduced only by 12.4 % after aging time for 21 days and the relative standard deviation (RSD) values were lower than 15 %, revealing an excellent uniformity and reproducibility. For MAL detection, this SERS substrate exhibited a low LOD of 1.72 × 10⁻¹⁰ M. This SERS substrate shows great potential for detecting and monitoring hazardous pollutants and pesticide residues.

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还原氧化石墨烯-碳纳米管纳米复合材料-装饰多孔银纳米枝用于高效SERS传感

在这项研究中，利用等离子体喷射技术在硅衬底上形成了一种由还原氧化石墨烯-碳纳米管/多孔银枝（rGO-CNTs/pAgDs）组成的创新纳米复合材料。该纳米复合材料被用作表面增强拉曼散射（SERS）衬底，用于检测有害污染物，包括罗丹明6G （R6G）和马拉硫磷（MAL）等农药残留。对于R6G探针，SERS底物具有良好的增强因子（EF）为1.68 × 107，低检出限（LOD）为2.43 × 10−13 m，并且SERS底物具有良好的稳定性，老化21 d后SERS强度仅降低12.4%，相对标准偏差（RSD）值小于15%，具有良好的均匀性和重复性。对于MAL检测，该SERS底物具有1.72 × 10−10 m的低LOD，在检测和监测有害污染物和农药残留方面具有很大的潜力。

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来源期刊

Optical Materials 工程技术-材料科学：综合

CiteScore

6.60

自引率

12.80%

发文量

1265

审稿时长

38 days

期刊介绍： Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials. OPTICAL MATERIALS focuses on: • Optical Properties of Material Systems; • The Materials Aspects of Optical Phenomena; • The Materials Aspects of Devices and Applications. Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.