Facile fabrication of Ag@C@C8 nanoparticles as a SERS substrate and their environmental applications

Zhang, Tingting; Xin, Xiaolin; Li, Anqi; Xu, Tao; Luo, Li; Liu, Chang; Li, Weihua; Li, Jiansheng; Li, Yang; Lü, Rui

doi:10.1039/d2an01073a

Cited by 7 publications

(5 citation statements)

References 46 publications

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“…According to the reported protocol, the SERS enhancement factor (EF) for glucose was 1.31 × 10 5 (see details in section S1 and Table S1 in the ESI†). 57–59 It is significant to observe that the characteristic Raman peaks of glucose on the carbonized PAN array substrate are distinct and match those of the standard spectrogram, indicating that the carbonized PAN array substrate has a high degree of biocompatibility.…”

Section: Resultsmentioning

confidence: 92%

Carbonized polyacrylonitrile array as a sensitive, biocompatible, and durable substrate for surface-enhanced Raman spectroscopy

Zhang,

Bao,

et al. 2023

Environ. Sci.: Nano

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Section: Resultsmentioning

confidence: 92%

Carbonized polyacrylonitrile array as a sensitive, biocompatible, and durable substrate for surface-enhanced Raman spectroscopy

Zhang,

Bao,

et al. 2023

Environ. Sci.: Nano

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“…It was found that 0.3 μM C12 functionalized PA@Ag-C12 exhibited the best SERS effects. The R6G concentration being 10 −9 M, the characteristic peak at 609 cm −1 , which corresponds to the C-C-C in-plane ring vibration [45], has a signal intensity of about 3000. It is estimated that PA@Ag-C12 exhibits a SERS intensity of approximately 4 times greater than PA@Ag substrate.…”

Section: Pa@ag-c12 Sers Performancementioning

confidence: 99%

One-step fabrication of flexible polyamide@Ag-dodecanethiol membranes for highly sensitive SERS detection of thiram

Li,

Zhang,

Zhang

et al. 2023

Nanotechnology

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The surface-enhanced Raman scattering (SERS) is an effective spectral technology based on Raman scattering, but in practice, the commonly used SERS substrates suffer from low sensitivity and poor stability. In order to overcome these limitations, the SERS substrates were prepared from hydrophobic modification of dodecanethiol (C12) coupled with a flexible substrate, which was then used for pesticides detection in water. A flexible PA@Ag-C12 substrate with surface functionalization has been obtained. This work aims to investigate the self-assembly of Ag NPs modified with C12 onto polyamide (PA) membranes. Initially, transmission electron microscopy and scanning electron microscopy were used to analyze the substrate’s morphology. Then with the help of an energy-dispersive spectrometer, sulfur content of C12-modified Ag NPs was analyzed. In order to determine the hydrophobicity of the modified Ag NPs, the contact angle was used. The results indicate that the gap between Ag NPs on PA membrane can be effectively controlled in order to prevent Ag NPs from aggregating. Furthermore, the finite-difference time-domain analysis indicated that the PA@Ag-C12 substrate exhibited a stronger electromagnetic enhancement effect than the PA@Ag substrate. By reducing NPs gaps on the PA membrane, the number of ‘hot spots’ increased, and the SERS performance of the substrate was improved as a result. According to the results of this study, this method can greatly reduce the manufacturing costs and time costs of the SERS substrate while maintaining the original uniformity. The SERS performance of PA@Ag-C12 was found to be three orders of magnitude better than that of PA@Ag direct self-assembled substrate, and the detection limit for Rhodamine 6G (R6G) was approximately 8.47 × 10−14 M. On the basis of the PA@Ag-C12 substrate, thiram is detectable at a detection limit of 5.88 × 10−11 M with a high degree of sensitivity and repeatability.

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“…According to the results shown in Fig. S7, † the limit of detection (LOD) for histamine was estimated to be 8.34 × 10 −12 M (S/N = 3), 40,41 with each characteristic peak of the probe molecule being identified unambiguously. Simultaneously, 10 −6 -10 −10 M glucose was prepared to establish a linear relationship, and the correlation coefficient was 0.9886, demonstrating that glucose concentration can be detected accurately by our substrate.…”

Section: Sers Detection Of Glucose Sandwich Assaymentioning

confidence: 99%

Glucose sandwich assay based on surface-enhanced Raman spectroscopy

Zhang

Wang

et al. 2023

Analyst

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Facile fabrication of Ag@C@C8 nanoparticles as a SERS substrate and their environmental applications

Abstract: After preparing carbon-coated silver (Ag@C) nanoparticles by a one-step hydrothermal synthesis method, the surface of the nanoparticles was modified with chlorodimethyloctylsilane (C8) to generate C8 functionalized Ag@C@C8 nanoparticles. The Ag@C@C8...

Cited by 7 publications

References 46 publications

Carbonized polyacrylonitrile array as a sensitive, biocompatible, and durable substrate for surface-enhanced Raman spectroscopy

Carbonized polyacrylonitrile array as a sensitive, biocompatible, and durable substrate for surface-enhanced Raman spectroscopy

One-step fabrication of flexible polyamide@Ag-dodecanethiol membranes for highly sensitive SERS detection of thiram

Glucose sandwich assay based on surface-enhanced Raman spectroscopy

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