Layered filter paper-silver nanoparticle-ZIF-8 composite for efficient multi-mode enrichment and sensitive SERS detection of thiram

Xu, Fugang; Shang, Wenjuan; Xuan, Mengren; Ma, Guangran; Ben, Zixiang

doi:10.1016/j.chemosphere.2021.132635

Cited by 42 publications

(15 citation statements)

References 43 publications

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“…As the thickness of the MOF shell was further increased, the gap between the adjacent AuNPs became larger. As a result, the efficient electromagnetic enhancement coupling could not be formed, leading to obviously decreased SERS signals (Xu et al., 2022). Therefore, Au@MIL‐101 with a single layer of MOF shell was chosen to fabricate the Au@MIL‐101/PMMA/DT substrate.…”

Section: Resultsmentioning

confidence: 99%

Fabrication of a metal organic framework (MOF)‐modified Au nanoparticle array for sensitive and stable SERS sensing of paraquat in cereals

Chen

Zhu²,

Yang

et al. 2023

Journal of Food Science

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A high‐performance Au@MIL‐101/PMMA/DT surface‐enhanced Raman scattering (SERS) substrate was fabricated for sensitive and stable detection of paraquat by self‐assembling metal organic framework–modified Au nanoparticles (Au@MIL‐101) on a poly(methyl methacrylate) (PMMA) film and then immobilizing the formed substrate onto a duct tape (DT). The highly closely packed Au@MIL‐101 array provided intensive hotspots for SERS sensing. The MIL‐101 layer modified on the surface of Au nanoparticles could absorb paraquat to the electromagnetic enhancement area of Au nanoparticles. The DT on the bottom made the substrate smoother, which is beneficial for achieving a more stable detection performance. As a result, the constructed substrate exhibited outstanding uniformity with relative standard deviations of 9.47% and storage stability for 2 months. For detecting paraquat, the substrate showed a low detection limit of 7.1 × 10−9 M (1.83 µg/kg) and wide linear range from 10−8 to 10−2 M. Furthermore, the substrate showed good detection performance in real cereal samples with desirable recovery rates from 91.57% to 102.32%.

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Section: Resultsmentioning

confidence: 99%

Fabrication of a metal organic framework (MOF)‐modified Au nanoparticle array for sensitive and stable SERS sensing of paraquat in cereals

Chen

Zhu²,

Yang

et al. 2023

Journal of Food Science

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“…Figure 6 shows the characteristic peaks from thiram, the peak at 1380 cm −1 from CN stretching vibration mode and CH 3 symmetry breaking, the peak at 1138 cm −1 from CN stretching vibration, and the peak at 562 cm −1 from the stretching vibration mode of S–S [ 30 , 31 , 32 ]. Through deep analysis of the SERS spectrum, it can be found that thiram with a concentration of 10 −9 M can be detected on this substrate.…”

Section: Resultsmentioning

confidence: 99%

Enhanced Surface Plasmon by Clusters in TiO2-Ag Composite

Zhang

Zhao

et al. 2022

Materials

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The surface plasmon in the composite composed of the noble metals and the semiconductors is interesting because of the various charges and the potential applications in many fields. Based on a highly ordered 2D polystyrene spheres array, the ordered composite nanocap arrays composed of TiO2 and Ag were prepared by the co-sputtering technique, and the surface morphology was tuned by changing TiO2 sputtering power. When TiO2 sputtering power was 60 W and Ag sputtering power was 10 W, the composite unit arrays showed the nanocap shapes decorated by many composite clusters around. The composite clusters led to the additional local coupling of the electromagnetic fields and significant Surface-Enhanced Raman Scattering (SERS) observations, which was also confirmed by the finite-different time-domain simulation. The SERS-active substrate composed of the composite nanocaps decorated by clusters realized the accurate detection of the thiram with concentrations down to 10−9 M.

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“…This SERS sensor showed low LOD (1.0 × 10 −9 M for TA, 8.0 × 10 −11 M for CP, 6.4 × 10 −11 M for IDP and 5.0 × 10 −12 M for CV) and satisfactory recoveries (96.2–125.1%) in dectecting tartrazine (TA), chloramphenicol (CP), imidacloprid (IDP) and crystal violet (CV) in food samples (milk, orange juice, and fishes). ( Xu et al, 2022 ) used an in-situ growth method to obtain the FP/Ag/ZIF-8-based SERS substrate composed of filter paper (FP), silver nanoparticles (AgNPs), and zeolitic imidazolate framework (ZIF-8) film. The synergy between the components achieved the SERS detection of 4-ATP down to 10 −11 M with high reproducibility.…”

Section: Applications and Mechanisms Of Mofs-based Sensors In Toxins ...mentioning

confidence: 99%

Metal-Organic Frameworks-Based Sensors for the Detection of Toxins in Food: A Critical Mini-Review on the Applications and Mechanisms

Xuan

Wang

Manickam

et al. 2022

Front. Bioeng. Biotechnol.

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Using scientific technologies to detect toxins in food is significant to prevent food safety problems and protect people’s health. Recently, the rise of sensors has made rapid, efficient, and safe detection of food toxins possible. One of the key factors impacting the sensor’s performance is the nanomaterials employed. Metal-organic frameworks (MOFs), with high specific surface area, tunable composition, porous structure, and flexible properties, have aroused the interest of researchers. The applications of MOFs in detecting food toxins have seen remarkable success in the past few years. In this critical mini-review, the impact of various synthesis methods on MOFs’ properties is first presented. Then, the applications and mechanisms of MOFs-based sensors in detecting various toxins are summarized and analyzed. Finally, future perspectives, potential opportunities, and challenges in this field are discussed.

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Layered filter paper-silver nanoparticle-ZIF-8 composite for efficient multi-mode enrichment and sensitive SERS detection of thiram

Cited by 42 publications

References 43 publications

Fabrication of a metal organic framework (MOF)‐modified Au nanoparticle array for sensitive and stable SERS sensing of paraquat in cereals

Fabrication of a metal organic framework (MOF)‐modified Au nanoparticle array for sensitive and stable SERS sensing of paraquat in cereals

Enhanced Surface Plasmon by Clusters in TiO2-Ag Composite

Metal-Organic Frameworks-Based Sensors for the Detection of Toxins in Food: A Critical Mini-Review on the Applications and Mechanisms

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