A polydopamine-based molecularly imprinted polymer on nanoparticles of type SiO2@rGO@Ag for the detection of λ-cyhalothrin via SERS

Li, Hongji; Wang, Xiaonan; Wang, Zirun; Wang, Yan; Dai, Jiangdong; Gao, Lin; Wei, Maobin; Yan, Yongsheng; Li, Chunxiang

doi:10.1007/s00604-017-2604-6

Cited by 35 publications

(23 citation statements)

References 34 publications

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“…Compared with conventional detection methods, SERS possessed the characteristics of high sensitivity, no destructive, and time‐saving . In theory, the SERS enhancement models incorporate the electromagnetic field enhancement mechanism (EM) and the charge transfer EM . The two mechanisms exist at the same time, but their proportions vary in diverse systems.…”

Section: Introductionmentioning

confidence: 99%

Preparation of a high‐performance magnetic molecularly imprinted sensor for SERS detection of cyfluthrin in river

Wang

et al. 2019

J Raman Spectroscopy

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A novel magnetic molecularly imprinted sensor (Fe 3 O 4 /GO/Ag-MIPs) was successfully synthesized. Combining with the technique of surface-enhanced Raman scattering (SERS), it could be applied to detect cyfluthrin (LC). Herein, GO and Ag particles were anchored on the surface of the Fe 3 O 4 @SiO 2 to obtain the composite (Fe 3 O 4 /GO/Ag), which was prepared as a SERS substrate. Then, the Fe 3 O 4 /GO/Ag-MIPs (FGA-MIPs) prepared by precipitation polymerization was evaluated as the SERS imprinted sensor for selective detection of LC from aqueous medium. The morphology and structural properties of FGA-MIPs were characterized by a series of modern analysis measurements. The results proved that FGA-MIPs possessed wonderful magnetic separation, sensitive SERS detection, and selectivity. Under optimal conditions, it exhibited a good linear relationship (R 2 = 0.9926) between the Raman shift (at 1,004 cm −1 ) and the concentration of LC among 10 −3 -10 −8 mol/L, and the limit of detection was 10 −8 mol/L. Meanwhile, the selective experiment indicated that this material owned specific selectivity to the template molecules. Thus, the result of this experiment demonstrated that the FGA-MIPs was a highly sensitive and selective sensor material in the field of LC detection, and it provided a new approach to other residual pyrethroid detection in the environment water.

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Section: Introductionmentioning

confidence: 99%

Preparation of a high‐performance magnetic molecularly imprinted sensor for SERS detection of cyfluthrin in river

Wang

et al. 2019

J Raman Spectroscopy

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“…The overall survey ( Figure 4 e) showed the presence of C, O, Ag, and Si in the rGO-Ag@SiO 2 nanocomposite. In the expanded C 1S spectrum ( Figure 4 a), the deconvoluted peaks were at 284.4, 286.8, and 288.9 eV, attributed to the C–C, C–O, and C=O spectra, respectively [ 28 ]. The expanded O 1s spectrum ( Figure 4 b) showed deconvoluted peaks corresponding to the C–O, Si–O, and C=O spectra at 534.3, 532.5, and 530.8 eV, respectively [ 29 , 30 ].…”

Section: Resultsmentioning

confidence: 99%

Differential Pulse Voltammetric Electrochemical Sensor for the Detection of Etidronic Acid in Pharmaceutical Samples by Using rGO-Ag@SiO2/Au PCB

et al. 2020

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An rGO-Ag@SiO2 nanocomposite-based electrochemical sensor was developed to detect etidronic acid (EA) using the differential pulse voltammetric (DPV) technique. Rapid self-assembly of the rGO-Ag@SiO2 nanocomposite was accomplished through probe sonication. The developed rGO-Ag@SiO2 nanocomposite was used as an electrochemical sensing platform by drop-casting on a gold (Au) printed circuit board (PCB). Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) confirmed the enhanced electrochemical active surface area (ECASA) and low charge transfer resistance (Rct) of the rGO-Ag@SiO2/Au PCB. The accelerated electron transfer and the high number of active sites on the rGO-Ag@SiO2/Au PCB resulted in the electrochemical detection of EA through the DPV technique with a limit of detection (LOD) of 0.68 μM and a linear range of 2.0–200.0 μM. The constructed DPV sensor exhibited high selectivity toward EA, high reproducibility in terms of different Au PCBs, excellent repeatability, and long-term stability in storage at room temperature (25 °C). The real-time application of the rGO-Ag@SiO2/Au PCB for EA detection was investigated using EA-based pharmaceutical samples. Recovery percentages between 96.2% and 102.9% were obtained. The developed DPV sensor based on an rGO-Ag@SiO2/Au PCB could be used to detect other electrochemically active species following optimization under certain conditions.

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“…For instance, Emily et al [170] has established that Ag@SiO 2 can be functionalized with MIPs to selectively rebind and successfully detect carbendazim with a limit of detection of 10 −9 M based on SERS. In another recent research, Li et al [171] developed SiO 2 @rGO@Ag-MIP as SERS substrate to detect λ-cyhalothrin, an organic insecticide, which had a limit of detection of 3.8 × 10 −10 M for cyhalothrin and showed efficacy towards tests in the practical water sample. Another crucial strategy in promoting selectivity and affinity is to integrate SERS and aptamer techniques, which is worth exploring and applying.…”

Section: Detection Of Pesticides In the Interior Of Samplementioning

confidence: 99%

Rapid field trace detection of pesticide residue in food based on surface-enhanced Raman spectroscopy

Liang

Wen-wen

et al. 2021

Microchim Acta

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Surface-enhanced Raman spectroscopy is an alternative detection tool for monitoring food security. However, there is still a lack of a conclusion of SERS detection with respect to pesticides and real sample analysis, and the summary of intelligent algorithms in SERS is also a blank. In this review, a comprehensive report of pesticides detection using SERS technology is given. The SERS detection characteristics of different types of pesticides and the influence of substrate on inspection are discussed and compared by the typical ways of classification. The key points, including the progress in real sample analysis and Raman data processing methods with intelligent algorithm, are highlighted. Lastly, major challenges and future research trends of SERS analysis of pesticide residue are also addressed. SERS has been proven to be a powerful technique for rapid test of residue pesticides in complex food matrices, but there still is a tremendous development space for future research.

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A polydopamine-based molecularly imprinted polymer on nanoparticles of type SiO2@rGO@Ag for the detection of λ-cyhalothrin via SERS

Cited by 35 publications

References 34 publications

Preparation of a high‐performance magnetic molecularly imprinted sensor for SERS detection of cyfluthrin in river

Preparation of a high‐performance magnetic molecularly imprinted sensor for SERS detection of cyfluthrin in river

Differential Pulse Voltammetric Electrochemical Sensor for the Detection of Etidronic Acid in Pharmaceutical Samples by Using rGO-Ag@SiO2/Au PCB

Rapid field trace detection of pesticide residue in food based on surface-enhanced Raman spectroscopy

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