Assembled Au/ZnO Nano-Urchins for SERS Sensing of the Pesticide Thiram

Barbillon, Grégory; Graniel, Octavio; Bechelany, Mikhaël

doi:10.3390/nano11092174

Cited by 29 publications

(15 citation statements)

References 58 publications

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“…Currently, it is widely used in agricultural products such as fruits and vegetables as a fungicide . However, excessive use of thiram in agricultural products may cause diseases and other health problems in humans and livestock because of its strong enrichment effect . Therefore, the detection of thiram residues on the irregular surface of agricultural products is of great practical importance.…”

Section: Resultsmentioning

confidence: 99%

“…55 However, excessive use of thiram in agricultural products may cause diseases and other health problems in humans and livestock because of its strong enrichment effect. 56 Therefore, the detection of thiram residues on the irregular surface of agricultural products is of great practical importance. To realize the practical applications of as-fabricated flexible M-Ag@BNC SERS sensors, the Raman signals of thiram solutions with different concentrations collected on M-Ag-12@BNC paper are detected by a simple and feasible paste-and-read method on an irregular orange surface.…”

Section: Resultsmentioning

confidence: 99%

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Monodisperse Ag Nanoparticle-Decorated Bacterial Nanocellulose as Flexible Surface-Enhanced Raman Scattering Sensors for Trace Detection of Toxic Thiram

Zhang

Huang

et al. 2022

ACS Appl. Nano Mater.

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Surface-enhanced Raman spectroscopy (SERS) is becoming an attractive technique for applications in food safety detection, environmental monitoring, disease diagnosis, and molecular identification. However, SERS substrates often suffer from low sensitivity, poor signal homogeneity, and stability. Herein, solution-processable monodisperse Ag nanoparticles (M-AgNPs) with an average diameter of 66 nm are synthesized by a sizecontrollable seeded-growth method. Furthermore, the M-AgNPs were coated on the surface of bacterial nanocellulose (BNC) to form flexible monodisperse Ag nanoparticles@bacterial nanocellulose (M-Ag@BNC) SERS sensors by a simple vacuumassisted filtration. The SERS performance of flexible M-Ag@BNC substrates with various M-Ag loadings is systematically investigated. Due to the highly homogeneous distribution of M-AgNPs, the optimal M-Ag-12@BNC SERS sensor exhibits high sensitivity with a detection sensitivity of 10 −13 M for methylene blue, excellent reproducibility (relative standard deviation (RSD) = 4.48%), and prominent storage stability (over 20 days). Besides, the hydrophilic BNC with good permeability and adsorption properties can absorb target molecules in the high-density hot-spot regions to further enhance SERS performance. Finite-difference time domain (FDTD) is also used to simulate and verify the strong electric field distribution of a M-AgNP-based SERS sensor. Finally, the M-Ag-12@BNC SERS sensor is successfully applied to detect pesticide residues on irregular fruit surfaces by a simple and feasible pasteand-read method. The sensitivity of a flexible M-Ag@BNC SERS sensor for thiram is up to 10 −8 M. The flexible, ultrasensitive, and stable M-Ag@BNC SERS sensor exhibits potential applications in trace identification of hazardous organic molecules.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Monodisperse Ag Nanoparticle-Decorated Bacterial Nanocellulose as Flexible Surface-Enhanced Raman Scattering Sensors for Trace Detection of Toxic Thiram

Zhang

Huang

et al. 2022

ACS Appl. Nano Mater.

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“…While the toxicity of most fungicides is generally low, prolonged exposure to these compounds may lead to adverse health effects such as neurological disruptions 126 . Several recent studies have utilized SERS to detect various fungicides, including tetramethylthiuram disulfide (THR), 39,53,61,70,79,127–161 carbendazim, 162–165 chlorothalonil, 166,167 MG, 168–173 TBZ (a fungicide and parasiticide) 20,79,153,155,173–178 and ferbam 20,178,179 . Among them, THR is the most studied due to its wide agricultural applications and strong binding with SERS nanosubstrates through the thiol group.…”

Section: Analytes Of Interestmentioning

confidence: 99%

Applications of surface‐enhanced Raman spectroscopy in environmental detection

Terry

Sanders

Potoff

et al. 2022

Analytical Science Advances

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As the human population grows, the anthropogenic impacts from various agricultural and industrial processes produce unwanted contaminants in the environment. The accurate, sensitive and rapid detection of such contaminants is vital for human health and safety. Surface-enhanced Raman spectroscopy (SERS) is a valuable analytical tool with wide applications in environmental contaminant monitoring. The aim of this review is to summarize recent advancements within SERS research as it applies to environmental detection, with a focus on research published or accessible from January 2021 through December 2021 including early-access publications. Our goal is to provide a wide breadth of information that can be used to provide background knowledge of the field, as well as inform and encourage further development of SERS techniques in protecting environmental quality and safety. Specifically, we highlight the characteristics of effective SERS nanosubstrates, and explore methods for the SERS detection of inorganic, organic, and biological contaminants including heavy metals, pharmaceuticals, plastic particles, synthetic dyes, pesticides, viruses, bacteria and mycotoxins. We also discuss the current limitations of SERS technologies in environmental detection and propose several avenues for future investigation. We encourage researchers to fill in the identified gaps so that SERS can be implemented in a real-world environment more effectively and efficiently, ultimately providing reliable and timely data to help and make science-based strategies and policies to protect environmental safety and public health.

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“…Although excellent SERS performance was achieved, the facile fabrication of ZnO films with good uniformity and enhanced SERS activity, followed by a systematic investigation of the mechanism of the facet–dependent SERS enhancement from the view of the electronic work function is highly desirable. 40,41 Herein, three facet–defined ({101̄0}, {0001} and {101̄1}) ZnO films were successfully prepared and directly employed as substrates to investigate the facet–dependent SERS performance. Both the experimental and calculation results revealed that ZnO exposed with {101̄1} facets exhibits the strongest SERS enhancement and lowest LOD.…”

Section: Introductionmentioning

confidence: 99%