Highly sensitive surface-enhanced Raman scattering detection of organic pesticides based on Ag-nanoplate decorated graphene-sheets

Wang, Xiujuan; Zhu, Congshan; Hu, Xiaoye; Xu, Qiaoling; Zhao, Huihui; Meng, Guowen; Lei, Yong

doi:10.1016/j.apsusc.2019.05.008

Cited by 37 publications

(11 citation statements)

References 45 publications

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“…The normal Raman spectrum of solid methyl parathion powder and SERS spectra of the methyl parathion solution diluted into various concentrations from 10 −6 M to 10 −8 M are shown in Figure 5. The main characteristic peaks at 858 (O=N=O wagging), 1109 (C-N stretching), 1347 (C-N=O stretching), and 1594 cm −1 all corresponded to the solid film and the previously reported results [35]. A low concentration of methyl parathion down to 10 −8 M could still be recognized, showing the great potential of the Ag-NPs@Au-NTs arrays for SERS-based rapid detection of environmental organic pollutants.…”

Section: Sers Signal Homogeneity Over the Ag-nps@au-nts Arrayssupporting

confidence: 71%

AAO Template-Assisted Fabrication of Ordered Ag Nanoparticles-Decorated Au Nanotubes Array for Surface-Enhanced Raman Scattering Detection

2022

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Highly sensitive and reproducible surface-enhanced Raman scattering (SERS) substrates are the main challenge for practical applications. In this work, an ordered and hierarchical Ag nanoparticles (Ag-NPs)-decorated Au nanotubes (Au-NTs) array was achieved based on a funnel-shaped pore anodic aluminum oxide (AAO) template-assisted strategy. First, funnel-pore-AAO templates were fabricated by further oxidation of conical-pore-AAO templates achieved by multistep anodization and etching. Then physical sputtering was used to assemble the Au-NTs and Ag-NPs using the as-prepared funnel-pore-AAO as sacrificial templates. SEM revealed abundant sub-10 nm neighboring gaps and sub-10 nm nanocavities at the bottom of the nanotubes because of the special shape of the AAO template, which resulted in abundant strong “hot spots” contributing to the sensitive SERS detection. The resultant hierarchical substrates manifested a SERS enhancement factor of 1.8 × 107 and reproducible response to 10−11 M rhodamine 6G and 10−8 M methyl parathion, showing potential in SERS-based rapid detection of trace pollutants in the environment.

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Section: Sers Signal Homogeneity Over the Ag-nps@au-nts Arrayssupporting

confidence: 71%

AAO Template-Assisted Fabrication of Ordered Ag Nanoparticles-Decorated Au Nanotubes Array for Surface-Enhanced Raman Scattering Detection

2022

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“…Compare to the pristine EG film, the enhanced peak intensity in the Raman spectra, measured for AgNWs:AgNPs/graphene, is closely associated with the surface enhanced Raman scattering induced by Ag nanostructures. 39 AFM image measured for the AgNWs:AgNPs/graphene is shown in Figure 1(e). It reveals that EG sheets are uniformly overlaid on the AgNW network, resulting in a low RMS of 6.6 nm as compared to that of the AgNWs:AgNPs surface (RMS 17.2 nm).…”

Section: Resultsmentioning

confidence: 99%

Ultraviolet‐Durable Flexible Nonfullerene Organic Solar Cells Realized by a Hybrid Nanostructured Transparent Electrode

Gong

Wang

et al. 2020

Solar RRL

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A significant enhancement in ultraviolet (UV) durable indium tin oxide (ITO)-free flexible nonfullerene organic solar cells (OSCs) has been demonstrated using a hybrid nanostructured flexible transparent electrode (FTE), comprising a mixture of 0D silver nanoparticles (AgNPs), 1D Ag nanowires (AgNWs) and 2D exfoliated graphene sheets. The FTE exhibits high optical transparency and electric conductivity, good air stability and full-solution fabrication capability at a low processing temperature. An average power convention efficiency (PCE) of 8.15% has been obtained for the flexible nonfullerene OSCs, based on the blend of poly[(2,6-(4, 8-bis(5-(2-ethylhexyl)thiophen-2-yl)-benzo[1,2-b:4,5-b']dithiophene))-alt-(5,5-(1',3'-di-2-thi enyl-5',7'-bis(2-ethylhexyl)benzo[1',2'-c:4',5'-c'] dithiophene-4,8-dione)] (PBDB-T): 3,9bis(2-methylene-(3-(1,1-dicyanomethylene)-indanone))-5,5,11,11-tetrakis(4-hexylphenyl)-dit hieno[2,3-d:2',3'-d']-s-indaceno[1,2-b:5,6-b'] dithiophene (ITIC). The flexible PBDB-T:ITIC OSCs exhibit an excellent UV durability compared to the ITO-based control cell, realized by the tailored FTE absorption in wavelength < 380 nm. The novel FTE developed in this work provides a promising alternative to ITO for use in UV durable flexible OSCs, serving as a UV filter to impede an unavoidable UV-induced degradation in ITO-based OSCs.

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“…In addition, the strength of the interaction between the graphene sheet and the pesticides can facilitate the assembly of pesticides. Thus, thiram and methyl parathion can be detected with high sensitivity using this method ( Figure 3 b) [ 29 ]. Zhang et al created a self-assembling 3D SERS substrate using a magnetic force.…”

Section: The Role Of Nanoparticles In the Detection Of Pesticidesmentioning

confidence: 99%

Recent Advances in Nanoparticle-Based Optical Sensors for Detection of Pesticide Residues in Soil

et al. 2023

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The excessive and unreasonable use of pesticides has adversely affected the environment and human health. The soil, one of the most critical natural resources supporting human survival and development, accumulates large amounts of pesticide residues. Compared to traditional spectrophotometry analytical methods, nanoparticle-based sensors stand out for their simplicity of operation as well as their high sensitivity and low detection limits. In this review, we focus primarily on the functions that various nanoparticles have and how they can be used to detect various pesticide residues in soil. A detailed discussion was conducted on the properties of nanoparticles, including their color changeability, Raman enhancement, fluorescence enhancement and quenching, and catalysis. We have also systematically reviewed the methodology for detecting insecticides, herbicides, and fungicides in soil by using nanoparticles.

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Highly sensitive surface-enhanced Raman scattering detection of organic pesticides based on Ag-nanoplate decorated graphene-sheets

Cited by 37 publications

References 45 publications

AAO Template-Assisted Fabrication of Ordered Ag Nanoparticles-Decorated Au Nanotubes Array for Surface-Enhanced Raman Scattering Detection

AAO Template-Assisted Fabrication of Ordered Ag Nanoparticles-Decorated Au Nanotubes Array for Surface-Enhanced Raman Scattering Detection

Ultraviolet‐Durable Flexible Nonfullerene Organic Solar Cells Realized by a Hybrid Nanostructured Transparent Electrode

Recent Advances in Nanoparticle-Based Optical Sensors for Detection of Pesticide Residues in Soil

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