Silver nanostar films for surface-enhanced Raman spectroscopy (SERS) of the pesticide imidacloprid

Bakar, Norhayati Abu; Shapter, Joseph G.

doi:10.1016/j.heliyon.2023.e14686

Cited by 12 publications

(6 citation statements)

References 28 publications

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“…They demonstrate characteristic Raman bands of IM at ca. 1368 and 1397 cm –1 . − Compared to shallots extracted with DIW vapor (Figure a), the SERS signal intensity of IM for shallots extracted with in situ PAW vapor (Figure b) had significantly decreased by ca. 71% based on the Raman band of IM at ca.…”

Section: Resultsmentioning

confidence: 99%

Extracting Pesticides from Shallots Utilizing Environmentally Friendly Vapors of In Situ Plasmon-Activated Water

Kao,

Yu,

Mai

et al. 2024

ACS Sustainable Chem. Eng.

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Today, the issues of environmental science and sustainable development are consistently highly valued. Furthermore, water is the most abundant and recyclable substance on earth and is also the most environmentally friendly solvent and reactant in the fields of chemistry and physics. Traditionally, pesticides were extracted utilizing organic solvents, which are effective but are harmful to the environment. In this work, in situ vapor of plasmon-activated water (PAW) was first utilized to effectively extract lipophilic pesticides from shallots. Compared to extraction with conventional deionized water (DIW) vapor, tricyclazole (TC), sulfoxaflor (SF), and imidacloprid (IM) could more effectively be extracted from shallots utilizing in situ PAW vapor, which was confirmed by analyses of surface-enhanced Raman scattering (SERS) spectra of the pesticides and their corresponding liquid chromatographic (LC)/tandem mass spectrometric (MS/MS) spectra. Moreover, the degree of swelling of artificial skin was more significant under an atmosphere of in situ PAW vapor, which makes extracting pesticides more effective. Active and more energetic in situ PAW vapor has emerged as a promising green solvent that can be applied for removing pesticides from crops. The environmentally friendly extraction strategies we developed provide an innovative idea for green science that avoids using harmful reagents.

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Section: Resultsmentioning

confidence: 99%

Extracting Pesticides from Shallots Utilizing Environmentally Friendly Vapors of In Situ Plasmon-Activated Water

Kao,

Yu,

Mai

et al. 2024

ACS Sustainable Chem. Eng.

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“…In this report, we used a AgNs substrate prepared through 10 subsequential layer depositions of silver nanostars (AgNs) on a glass surface as the SERS substrate, as described in our previous article [ 22 ]. To comprehensively study the SERS performance for various neonicotinoid pesticides on the SERS substrates, we collected the Raman spectra of neonicotinoid pesticide powders for the reference of neonicotinoid characteristic peaks.…”

Section: Resultsmentioning

confidence: 99%

“…The synthesis of the colloidal silver nanostars (AgNs) and the fabrication of the silver nanostars film were described in our previous article [ 22 ]. Colloidal AgNs was prepared by a chemical reduction technique by mixing 2.0 mL of 6.0 × 10 −2 M hydroxylamine into 2.0 mL of 5 × 10 −2 M sodium hydroxide.…”

Section: Methodsmentioning

confidence: 99%

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Surface-Enhanced Raman Spectroscopy Using a Silver Nanostar Substrate for Neonicotinoid Pesticides Detection

Abu Bakar,

Fronzi,

Shapter

2024

Sensors

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Surface-enhanced Raman spectroscopy (SERS) has been introduced to detect pesticides at low concentrations and in complex matrices to help developing countries monitor pesticides to keep their concentrations at safe levels in food and the environment. SERS is a surface-sensitive technique that enhances the Raman signal of molecules absorbed on metal nanostructure surfaces and provides vibrational information for sample identification and quantitation. In this work, we report the use of silver nanostars (AgNs) as SERS-active elements to detect four neonicotinoid pesticides (thiacloprid, imidacloprid, thiamethoxam and nitenpyram). The SERS substrates were prepared with multiple depositions of the nanostars using a self-assembly approach to give a dense coverage of the AgNs on a glass surface, which ultimately increased the availability of the spikes needed for SERS activity. The SERS substrates developed in this work show very high sensitivity and excellent reproducibility. Our research opens an avenue for the development of portable, field-based pesticide sensors, which will be critical for the effective monitoring of these important but potentially dangerous chemicals.

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“…The interaction of light (optical spectroscopy) or laser (Raman spectroscopy) with a sample provides details about its electronic structure, which are important for the identification of substances [48]. Optical spectroscopy measures the absorption, emission, or reflection of a sample by directing light in the ultra-violet visible spectrum infra-red (UV-VIS-NIR) regions through or off it [49].…”

Section: Spectroscopic Techniquesmentioning

confidence: 99%

Integrating Wireless Remote Sensing and Sensors for Monitoring Pesticide Pollution in Surface and Groundwater

Mutunga,

Sinanovic,

Harrison

2024

Sensors

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Water constitutes an indispensable resource crucial for the sustenance of humanity, as it plays an integral role in various sectors such as agriculture, industrial processes, and domestic consumption. Even though water covers 71% of the global land surface, governments have been grappling with the challenge of ensuring the provision of safe water for domestic use. A contributing factor to this situation is the persistent contamination of available water sources rendering them unfit for human consumption. A common contaminant, pesticides are not frequently tested for despite their serious effects on biodiversity. Pesticide determination in water quality assessment is a challenging task because the procedures involved in the extraction and detection are complex. This reduces their popularity in many monitoring campaigns despite their harmful effects. If the existing methods of pesticide analysis are adapted by leveraging new technologies, then information concerning their presence in water ecosystems can be exposed. Furthermore, beyond the advantages conferred by the integration of wireless sensor networks (WSNs), the Internet of Things (IoT), Machine Learning (ML), and big data analytics, a notable outcome is the attainment of a heightened degree of granularity in the information of water ecosystems. This paper discusses methods of pesticide detection in water, emphasizing the possible use of electrochemical sensors, biosensors, and paper-based sensors in wireless sensing. It also explores the application of WSNs in water, the IoT, computing models, ML, and big data analytics, and their potential for integration as technologies useful for pesticide monitoring in water.

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Silver nanostar films for surface-enhanced Raman spectroscopy (SERS) of the pesticide imidacloprid

Cited by 12 publications

References 28 publications

Extracting Pesticides from Shallots Utilizing Environmentally Friendly Vapors of In Situ Plasmon-Activated Water

Extracting Pesticides from Shallots Utilizing Environmentally Friendly Vapors of In Situ Plasmon-Activated Water

Surface-Enhanced Raman Spectroscopy Using a Silver Nanostar Substrate for Neonicotinoid Pesticides Detection

Integrating Wireless Remote Sensing and Sensors for Monitoring Pesticide Pollution in Surface and Groundwater

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