23 小时之前 · To fabricate nanocomposite substrates for SERS sensors, ZnO has been regarded a promising candidate to corporate with silver nanoparticles (AgNPs) in several recent reports.16–18 In a study, Zeng et al. designed and developed a nanocomposite consisted of ZnO nanotower arrays and cubic and tetrahedral-shaped AgNPs to develop a SERS sensor detecting rhodamine 6G, exhibiting enormous SERS ...

2025年1月1日 · In this study, we developed a highly sensitive SERS substrate by creating NiO nanosheet array structures and incorporating AgNPs on the surface to form NiO/AgNPs nanowell sensor. The strategic arrangement of the nanosheets and the resonant coupling within the nanogaps between the AgNPs create numerous hot spots and ensure uniform signal ...

2024年8月5日 · In this study, we developed a novel type of surface-enhanced Raman scattering (SERS) chip composed of a covalent organic framework (COF)-silver nanoparticles (AgNPs) nanocomposite, and this nanocomposite was fabricated by a one-step method of ultrasonically mixing the obtained COF and AgNPs.

3 天之前 · Among the noble metals, AgNPs are preferred for SERS applications according to their promising plasmonic properties, forming an insightful sensing tool suitable for environmental monitoring purposes [12, 13].Several methods are commonly employed for the generation of Ag NPs, such as chemical reduction (which is simple but typically introduces impurities) [14], biological (green) synthesis ...

2021年6月11日 · In this paper, a three-dimensional (3D) SERS substrate based on ordered micropyramid array and silver nanoparticles (MPA/AgNPs 3D-SERS) was constructed using the roll-to-plate embossing technology and a hydrothermal method, which provided an efficient and low-cost preparation process for the SERS substrate.

摘要: 构建了一种具有纳米碗阵列结构的柔性表面增强拉曼散射(SERS) 基底, 并对罗丹明6G和福美双进行了检测分析。 首先利用气- 液自组装法在玻璃片上制备单层聚苯乙烯(PS) 微球薄膜, 然后将液-液界面自组装法得到的单层银纳米颗粒转移至PS 微球薄膜上, 再把聚二甲基硅氧烷(PDMS) 涂敷于银纳米颗粒上,经烘干和剥离得到AgNPs@ PDMS 纳米碗阵列基底。

2025年2月20日 · The surface-enhanced Raman scattering (SERS), dependent on metal nanoparticle substrate structure and morphology, presents a powerful analytic tool across diverse fields such as food safety, environm...

4 天之前 · In this study, D-T-CNFs@Ag SERS substrates were fabricated by decorating a flexible dialdehyde TEMPO-oxidized cellulose nanofibril (D-T-CNF) film with silver nanoparticles (AgNPs). Carboxylate groups and aldehyde groups on cellulose nanofibrils were used as the growth sites for AgNPs and the main reducing agents for forming three-dimensional ...

A flexible surface-enhanced Raman scattering (SERS) substrate with a nano-bowl array structure was constructed and used for the analysis and detection of Rhodamine 6G and thiram. First, a single-layer polystyrene (PS) microsphere film was prepared on a glass slide using the gas-liquid self-assembly method.

2016年3月29日 · In this work, a novel platform for surface-enhanced Raman spectroscopy (SERS)-based chemical sensors utilizing three-dimensional microporous graphene foam (GF) decorated with silver nanoparticles...