Metal-organic framework (MOF-5) coated SERS active gold gratings: A platform for the selective detection of organic contaminants in soil

Guselnikova, Olga; Postnikov, Pavel; Elashnikov, Roman; Милютина, Елена; Švorčı́k, Václav; Lyutakov, Oleksiy

doi:10.1016/j.aca.2019.03.058

Cited by 95 publications

(47 citation statements)

References 61 publications

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“…Several materials and morphologies have been explored with this particular application in mind—Ag nanoflowers [18], Au/Ag nanorods [14], and colloidal Au nanoparticles [19] among others, all of which showed capabilities of detecting low pesticide concentrations, down to 10 −10 M. However, aside from sensitivity, there are still more factors to consider in this particular application, such as the reproducibility of results and the capability of the substrates to detect multiple pesticides in real food matrices [20,21]. To address these issues, morphology control and material selection have been given emphasis, focusing on achieving large-scale uniformity in obtaining SERS measurements [22].…”

Section: Introductionmentioning

confidence: 99%

SERS-Active Substrate with Collective Amplification Design for Trace Analysis of Pesticides

et al. 2019

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Health risks posed by the exposure to trace amounts of pesticide residue in agricultural products have gained a lot of concerns, due to their neurotoxic nature. The applications of surface-enhanced Raman Scattering (SERS) as a detection technique have consistently shown its potential as a rapid and sensitive means with minimal sample preparation. In this study, gold nanoparticles (Au NPs) in elliptical shapes were collected into a layer of ordered zirconia concave pores. The porous zirconia layer (pZrO2) was then deposited with Au NPs, denoted as Au NPs (x)/pZrO2, where x indicates the deposition thickness of Au NPs in nm. In the concave structure of pZrO2, Au-ZrO2 and Au-Au interactions provide a synergistic and physical mechanism of SERS, which is anticipated to collect and amplify SERS signals and thereafter improve the enhancement factor (EF) of Au NPs/pZrO2. By taking Rhodamine 6G (R6G) as the test molecule, EF of Au NPs/pZrO2 might reach to 7.0 × 107. Au NPs (3.0)/pZrO2 was then optimized and competent to detect pesticides, e.g., phosmet and carbaryl at very low concentrations, corresponding to the maximum residue limits of each, i.e., 0.3 ppm and 0.2 ppm, respectively. Au NPs (3.0)/pZrO2 also showed the effectiveness of distinguishing between phosmet and carbaryl under mixed conditions. Due to the strong affinities of the phosphoric groups and sulfur in phosmet to the Au NPs (3.0)/pZrO2, the substrate exhibited selective detection to this particular pesticide. In this study, Au NPs (3.0)/pZrO2 has thus demonstrated trace detection of residual pesticides, due to the substrate design that intended to provide collective amplification of SERS.

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Section: Introductionmentioning

confidence: 99%

SERS-Active Substrate with Collective Amplification Design for Trace Analysis of Pesticides

et al. 2019

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“…Figure 6(c) shows a comparison of the LOD and EF results between this study and those of other studies. It can be seen that the performance of the prepared SERS substrate in this study is higher than the others, thus indicating its excellent detection sensitivity (Cai et al, 2018;Guselnikova et al, 2019;D. Li et al, 2019;Q.…”

Section: Sers Sensitivity Evaluation Of C-ag@zif-67 Substratesmentioning

confidence: 69%

Ag@ZIF-67 decorated cotton fabric as flexible, stable and sensitive SERS substrate for label-free detection of phenol-soluble modulin

Shang

Gao

et al. 2021

Cellulose

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Although strategies of compositing noble materials and Zeolitic imidazolate frameworks (ZIFs) have been used to enhance the performance of ZIF-based surface-enhanced Raman scattering (SERS) substrates, the enhancement process still remains unclear and the sampling process with powder-form substrates is challenging for practical applications. In this study, a exible SERS substrate with silver (Ag) nanoparticle decorated ZIF-67 as the active materials and cotton fabric as the supporting framework is developed with a facile method in two steps. The proposed exible SERS substrate not only can reduce di culties during the sampling process, but also expands future applications for sampling towards irregular target substances. Meanwhile, the enhancement mechanism has been investigated by using Methylene Blue (MB) to probe the molecular interactions. The constructed SERS substrate shows the highest enhancement factor of 6.25×10 6 and an excellent detection sensitivity with a limitation of detection (LoD) of 10 − 14 M/L. Because of its excellent performance in SERS tracing, the proposed SERS substrate shows exceptional ability in detecting and identifying phenol-soluble modulins and is considered to be a label-free approach that requires no adding markers/tags or antibodies. The proposed substrate expands the potential applications of SERS technology for rapid detection of bacterial toxins during clinical diagnoses and treatment.

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“…Even though the EFs of these materials are not comparable with Ag and Au substrates, it is possible to gain other advantages by compositing them with traditional SERS substrates (Jiao et al., 2021). As discussed in previous sections, the capability and performance of SERS‐based methods can be improved through introducing nanomaterials such as MXenes (Zheng et al., 2019), MOFs (Guselnikova et al., 2019), and nanozymes (Huang, Sun, Pu, & Wei, 2019). Second, more recognition elements should be screened for different types of mycotoxins.…”

Section: Discussionmentioning

confidence: 99%

“…Schematic illustration of mycotoxins detection based on SERS. Some of the images are reprinted with permission from various studies (Q. Chen et al., 2018; Foti et al., 2018; Guselnikova et al., 2019; Kang et al., 2019; J. Li et al., 2019; Shao et al., 2018; Song et al., 2018; X. Wang et al., 2018; Y. Wu et al., 2018; Yang et al., 2017; Zhu et al., 2020)…”

Section: Introductionmentioning

confidence: 99%

Recent progress in mycotoxins detection based on surface‐enhanced Raman spectroscopy

Zhai

You

Ouyang

et al. 2021

Comp Rev Food Sci Food Safe

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Mycotoxins are toxic compounds naturally produced by certain types of fungi. The contamination of mycotoxins can occur on numerous foodstuffs, including cereals, nuts, fruits, and spices, and pose a major threat to humans and animals by causing acute and chronic toxic effects. In this regard, reliable techniques for accurate and sensitive detection of mycotoxins in agricultural products and food samples are urgently needed. As an advanced analytical tool, surface‐enhanced Raman spectroscopy (SERS), presents several major advantages, such as ultrahigh sensitivity, rapid detection, fingerprint‐type information, and miniaturized equipment. Benefiting from these merits, rapid growth has been observed under the topic of SERS‐based mycotoxin detection. This review provides a comprehensive overview of the recent achievements in this area. The progress of SERS‐based label‐free detection, aptasensor, and immunosensor, as well as SERS combined with other techniques, has been summarized, and in‐depth discussion of the remaining challenges has been provided, in order to inspire future development of translating the techniques invented in scientific laboratories into easy‐to‐operate analytic platforms for rapid detection of mycotoxins.

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Metal-organic framework (MOF-5) coated SERS active gold gratings: A platform for the selective detection of organic contaminants in soil

Cited by 95 publications

References 61 publications

SERS-Active Substrate with Collective Amplification Design for Trace Analysis of Pesticides

SERS-Active Substrate with Collective Amplification Design for Trace Analysis of Pesticides

Ag@ZIF-67 decorated cotton fabric as flexible, stable and sensitive SERS substrate for label-free detection of phenol-soluble modulin

Recent progress in mycotoxins detection based on surface‐enhanced Raman spectroscopy

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