Hollow RuCu bimetallic nanospheres as emerging SERS substrates for illegal food additives detection

Li, Wan; Sun, Yingying; Chen, Wan-Ling; Song, Guofen; Huang, Miaoyan; Xu, Jiang; Shi, Xuexiang; Li, Penghui

doi:10.1016/j.matlet.2022.133053

Cited by 4 publications

(2 citation statements)

References 19 publications

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“…Surface-enhanced Raman spectroscopy (SERS) has been extensively studied in the area of food safety [ 11 ]. With the advantages of rapid detection, small sample size, anti-water interference, and high sensitivity, SERS has been widely employed to detect hazardous food additives [ 12 , 13 ], pathogenic microorganisms [ 14 , 15 ], biotoxins [ 16 , 17 , 18 ], and pesticide residues [ 19 , 20 ]. Because of its extremely high sensitivity (up to 10 14 ), the SERS technique has great potential for single-molecule analysis [ 21 ] and detection of unknown objects.…”

Section: Introductionmentioning

confidence: 99%

MIPs–SERS Sensor Based on Ag NPs Film for Selective Detection of Enrofloxacin in Food

et al. 2023

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The quinolone antibiotics represented by enrofloxacin (ENRO) are harmful to the ecological environment and human health due to illegal excessive use, resulting in increasing food residues and ENRO levels in the environment. To this end, we developed a MIPs–SERS method using surface-enhanced Raman spectroscopy (SERS) and molecularly imprinted polymers (MIPs) to detect ENRO in food matrices. Firstly, a layer of silver nanoparticles (Ag NPs) with the best SERS effect was synthesized on the surface of copper rods as the enhancing material by in situ reductions, and then MIPs targeting ENRO were prepared by the native polymerization reaction, and the MIPs containing template molecules wrapped on the surface of silver nanoparticle films (Ag NPs–MIPs) were obtained. Our results showed that the Ag NPs–MIPs could specifically identify ENRO from the complex environment. The minimum detection limit for ENRO was 0.25 ng/mL, and the characteristic peak intensity of ENRO was linearly correlated to the concentration with a linear range of 0.001~0.1 μg/mL. The experimental results showed that in comparison to other detection methods, the rapid detection of ENRO in food matrices using Ag NPs–MIPs as the substrate is reliable and offers a cost-effective, time-saving, highly selective, and sensitive method for detecting ENRO residues in real food samples.

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Section: Introductionmentioning

confidence: 99%

MIPs–SERS Sensor Based on Ag NPs Film for Selective Detection of Enrofloxacin in Food

et al. 2023

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“…With the development of SERS substrates, various nanomaterials and nanostructures have been widely used in the preparation of substrates. In addition to noble metal nanomaterials, semiconductor nanomaterials such as ZnO, TiO 2 , and MoS 2 are often utilized in SERS research, − because they can be developed into various forms such as nanorods, , nanospheres, nanowires, nanotubes, − and nanosheets. , However, there are few reports on the application of hydroxides in the SERS substrate. Some layered hydroxides have a large number of active surface groups or hydroxyl groups, which contribute to the adsorption of probe molecules, thus displaying a particular SERS activity.…”

Section: Introductionmentioning

confidence: 99%

Spontaneous Redox-Reaction-Driven Growth of Ag Nanoparticles on Co(OH)₂ Nanoflower Arrays for Surface-Enhanced Raman Scattering

Fan

Huang

et al. 2023

Inorg. Chem.

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A simple and reliable method is developed to fabricate Ag-nanoparticle-decorated Co(OH)2 nanoflowers grafted on polyacrylonitrile (PAN) nanopillar arrays as uniform and sensitive surface-enhanced Raman scattering (SERS) substrates. First, Co(OH)2-nanosheet-assembled nanoflowers are achieved on the highly uniform PAN nanopillar arrays via electrochemical deposition. Then, Ag nanoparticles (Ag-NPs) are decorated onto the Au-nanoparticle-precoated Co(OH)2 nanoflowers based on a spontaneous redox reaction (SRR) between the silver ions and Co(OH)2 nanosheets at room temperature. Ag-NPs can be successfully in situ synthesized on the Co(OH)2 nanoflowers, and Au nanoparticles precoated on the surface of the Co(OH)2 nanosheets can ensure that the Co(OH)2 nanoflower structure does not collapse. Because of the highly uniform PAN nanopillar arrays and the high-density sub-10 nm gaps between the neighboring Ag-NPs on the surface of the Co(OH)2 nanoflowers, the hierarchical three-dimensional Ag@Co(OH) x grown on PAN nanopillar arrays can produce a reproducible and sensitive SERS effect. To verify the SERS performance of the substrate, 4-aminothiophenol (4-ATP) is used as the probe molecule, and the Ag@Co(OH) x grown on PAN nanopillar arrays is employed as the SERS substrate. As a result, 4-ATP concentrations as low as 10–10 M can still be identified, exhibiting high SERS activity. Additionally, the relative standard deviation value of the main characteristic peak of 10–5 M 4-ATP is 9.43%, indicating good uniformity of the SERS signal of the substrate. The SRR between silver ions and Co(OH)2 can provide a simple route to prepare heterostructures as SERS substrates, which has great potential for application in the field of analysis.

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SERS behaviors of multi-shape silver nanoparticles on Si substrate – An insight from both experimental and theoretical approaches

Pham,

Tran,

Luong

et al. 2024

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Hollow RuCu bimetallic nanospheres as emerging SERS substrates for illegal food additives detection

Cited by 4 publications

References 19 publications

MIPs–SERS Sensor Based on Ag NPs Film for Selective Detection of Enrofloxacin in Food

MIPs–SERS Sensor Based on Ag NPs Film for Selective Detection of Enrofloxacin in Food

Spontaneous Redox-Reaction-Driven Growth of Ag Nanoparticles on Co(OH)₂ Nanoflower Arrays for Surface-Enhanced Raman Scattering

SERS behaviors of multi-shape silver nanoparticles on Si substrate – An insight from both experimental and theoretical approaches

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Hollow RuCu bimetallic nanospheres as emerging SERS substrates for illegal food additives detection

Cited by 4 publications

References 19 publications

MIPs–SERS Sensor Based on Ag NPs Film for Selective Detection of Enrofloxacin in Food

MIPs–SERS Sensor Based on Ag NPs Film for Selective Detection of Enrofloxacin in Food

Spontaneous Redox-Reaction-Driven Growth of Ag Nanoparticles on Co(OH)2 Nanoflower Arrays for Surface-Enhanced Raman Scattering

SERS behaviors of multi-shape silver nanoparticles on Si substrate – An insight from both experimental and theoretical approaches

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Spontaneous Redox-Reaction-Driven Growth of Ag Nanoparticles on Co(OH)₂ Nanoflower Arrays for Surface-Enhanced Raman Scattering