Polymethacrylic acid–facilitated nanofiber matrix loading Ag nanoparticles for SERS measurements

By introducing polymethacrylic acid (PMAA), fairly uniform PMAA/poly(N-vinylpyrrolidone) (PVP) ultrafine fibers containing silver nanoparticles (AgNPs) for SERS substrates were successfully prepared via electrospinning by means of in situ photoreduction of silver ions. This makes the detection results reproducible with RSD values below 0.2% through the SERS signals to detect malachite green (MG), a significant environmental organic pollutant, for its genotoxicity.

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Controllable In-Situ Growth of Silver Nanoparticles on Filter Paper for Flexible and Highly Sensitive SERS Sensors for Malachite Green Residue Detection

Nanomaterials ◽

10.3390/nano10050826 ◽

2020 ◽

Vol 10 (5) ◽

pp. 826 ◽

Cited By ~ 1

Author(s):

Lingzi Zhang ◽

Jun Liu ◽

Guowei Zhou ◽

Zhiliang Zhang

Keyword(s):

Silver Nanoparticles ◽

Malachite Green ◽

High Sensitivity ◽

In Situ Growth ◽

Sers Substrates ◽

Universal Approach ◽

Surface Enhanced Raman ◽

Enhanced Raman Scattering ◽

Filter Papers

In this work, a series of highly flexible and sensitive surface-enhanced Raman scattering (SERS) substrates were fabricated by the in-situ growth of silver nanoparticles (AgNPs) on polydopamine (PDA) templated filter papers (FPs), based on mussel-inspired surface chemistry. The obtained FP@PDA@AgNPs strips exhibited high sensitivity and reproducibility with Rhodamine 6G (R6G) probe molecules, with a calculated detection limit of approximately 10−10 M. More critically, these FP@PDA@AgNPs strips could be used as outstanding flexible SERS sensors to quickly collect and detect malachite green (MG) residues on fish scales, crab shells and shrimp skins by a swabbing extraction method. The detection limits for MG residues were calculated to be approximately as low as 0.04635 pg/cm2, 0.06952 pg/cm2 and 0.09270 pg/cm2, respectively. This facile and efficient strategy could to be utilized as a universal approach to fabricating a variety of flexible, cheap and portable SERS sensors for surface contamination analysis, and has great potential in the environmental scientific analysis and food safety monitoring fields.

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In situ and facile synthesis of silver nanoparticles on baby wipes and their applications in catalysis and SERS

RSC Advances ◽

10.1039/c5ra20059h ◽

2016 ◽

Vol 6 (6) ◽

pp. 5016-5023 ◽

Cited By ~ 9

Author(s):

Bharat Baruah

Keyword(s):

Silver Nanoparticles ◽

Composite Materials ◽

Heterogeneous Catalyst ◽

Facile Synthesis ◽

Sers Substrates ◽

Efficient Heterogeneous Catalyst

Silver nanoparticles were immobilized on fibers to create composite materials. The composites are shown to be efficient heterogeneous catalyst with very good recyclability. These composite materials are also proven to be good SERS substrates.

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Silver Ions Release from Antibacterial Chitosan Films Containing in Situ Generated Silver Nanoparticles

Journal of Agricultural and Food Chemistry ◽

10.1021/jf304006y ◽

2012 ◽

Vol 61 (1) ◽

pp. 260-267 ◽

Cited By ~ 68

Author(s):

Gracia López-Carballo ◽

Laura Higueras ◽

Rafael Gavara ◽

Pilar Hernández-Muñoz

Keyword(s):

Silver Nanoparticles ◽

Silver Ions ◽

Chitosan Films

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In-Situ Grown Silver Nanoparticles on Nonwoven Fabrics Based on Mussel-Inspired Polydopamine for Highly Sensitive SERS Carbaryl Pesticides Detection

Nanomaterials ◽

10.3390/nano9030384 ◽

2019 ◽

Vol 9 (3) ◽

pp. 384 ◽

Cited By ~ 13

Author(s):

Zhiliang Zhang ◽

Tiantian Si ◽

Jun Liu ◽

Guowei Zhou

Keyword(s):

Silver Nanoparticles ◽

Collection Efficiency ◽

High Sensitivity ◽

Sers Substrate ◽

Analytical Sensitivity ◽

Sers Substrates ◽

Rapid Sampling ◽

Highly Sensitive ◽

Highly Sensitive Detection

The rapid sampling and efficient collection of target molecules from a real-world surface is fairly crucial for surface-enhanced Raman scattering (SERS) to detect trace pesticide residues in the environment and in agriculture fields. In this work, a versatile approach was exploited to fabricate a flexible SERS substrate for highly sensitive detection of carbaryl pesticides, using in-situ grown silver nanoparticles (AgNPs)on non-woven (NW) fabric surfaces based on mussel-inspired polydopamine (PDA) molecules. The obtained NW@PDA@AgNPs fabrics showed extremely sensitive and reproducible SERS signals toward crystal violet (CV) molecules, and the detection limit was as low as 1.0 × 10−12 M. More importantly, these NW@PDA@AgNPs fabrics could be directly utilized as flexible SERS substrates for the rapid extraction and detection of trace carbaryl pesticides from various fruit surfaces through a simple swabbing approach. It was identified that the detection limits of carbaryl residues from apple, orange, and banana surfaces were approximately decreased to 4.02 × 10−12, 6.04 × 10−12, and 5.03 × 10−12 g, respectively, demonstrating high sensitivity and superior reliability. These flexible substrates could not only drastically increase the collection efficiency from multifarious irregular-shaped matrices, but also greatly enhance analytical sensitivity and reliability for carbaryl pesticides. The fabricated flexible and multifunctional SERS substrates would have great potential to trace pesticide residue detection in the environment and bioscience fields.

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In situ reduction of antibacterial silver ions to metallic silver nanoparticles on bioactive glasses functionalized with polyphenols

Applied Surface Science ◽

10.1016/j.apsusc.2016.10.177 ◽

2017 ◽

Vol 396 ◽

pp. 461-470 ◽

Cited By ~ 25

Author(s):

S. Ferraris ◽

M. Miola ◽

A. Cochis ◽

B. Azzimonti ◽

L. Rimondini ◽

...

Keyword(s):

Silver Nanoparticles ◽

Silver Ions ◽

Metallic Silver ◽

In Situ Reduction ◽

Bioactive Glasses

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Electrospun flexible poly(bisphenol A carbonate) nanofibers decorated with Ag nanoparticles as effective 3D SERS substrates for trace TNT detection

The Analyst ◽

10.1039/c7an01639e ◽

2017 ◽

Vol 142 (24) ◽

pp. 4756-4764 ◽

Cited By ~ 20

Author(s):

Yi Li ◽

Rui Lu ◽

Jinyou Shen ◽

Weiqing Han ◽

Xiuyun Sun ◽

...

Keyword(s):

Bisphenol A ◽

Ag Nanoparticles ◽

Chemical Reduction ◽

Sers Substrate ◽

Sers Substrates ◽

Surface Enhanced ◽

Surface Enhanced Raman ◽

Enhanced Raman Scattering ◽

Tnt Detection

A flexible 3D hybrid PC/Ag surface-enhanced Raman scattering (SERS) substrate was fabricated through the combination of electrospinning and in situ chemical reduction.

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Core–Shell γ-Fe2O3/SiO2/PCA/Ag-NPs Hybrid Nanomaterials as a New Candidate for Future Cancer Therapy

International Journal of Nanoscience ◽

10.1142/s0219581x14500082 ◽

2014 ◽

Vol 13 (01) ◽

pp. 1450008 ◽

Cited By ~ 2

Author(s):

R. Soleyman ◽

A. Pourjavadi ◽

N. Masoud ◽

A. Varamesh

Keyword(s):

Silver Nanoparticles ◽

Cancer Therapy ◽

Silver Ions ◽

Core Shell ◽

Capping Agent ◽

Hybrid Nanomaterials ◽

Ag Nps ◽

Core Nanoparticles ◽

Size And Structure

In the current study, γ- Fe 2 O 3/ SiO 2/ PCA / Ag -NPs hybrid nanomaterials were successfully synthesized and characterized. At first, prepared γ- Fe 2 O 3 core nanoparticles were modified by SiO 2 layer. Then they were covered by poly citric acid (PCA) via melting esterification method as well. PCA shell acts as an effective linker, and provides vacancies for conveying drugs. Moreover, this shell as an effective capping agent directs synthesis of silver nanoparticles ( Ag -NPs) via in situ photo-reduction of silver ions by sunlight-UV irradiation. This system has several benefits as a suitable cancer therapy nanomaterial. Magnetic nanoparticles (MNPs) can guide Ag -NPs and drugs to cancer cells and then Ag -NPs can affect those cells via Ag -NPs anti-angiogenesis effect. Size and structure of the prepared magnetic hybrid nanomaterials were characterized using FTIR and UV-Vis spectra, AFM and TEM pictures and XRD data.

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Anti-Malassezia furfur activity of natural surfactant mediated in situ silver nanoparticles for a better antidandruff shampoo formulation

RSC Advances ◽

10.1039/c5ra23174d ◽

2016 ◽

Vol 6 (13) ◽

pp. 11064-11069 ◽

Cited By ~ 9

Author(s):

K. Jagajjanani Rao ◽

Santanu Paria

Keyword(s):

Silver Nanoparticles ◽

Ag Nanoparticles ◽

Malassezia Furfur ◽

One Pot ◽

One Pot Synthesis ◽

Natural Surfactant

Anin situone pot synthesis of Ag nanoparticles in aqueousAcaciaplant-surfactant media can be useful as a good anti-dandruff shampoo.

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Eco-Friendly Approach to Control Mosquitos (A. stephensi, C. quinquefasciatus, and A. aegypti) Using Silver Nanoparticle

Journal of Environmental Treatment Techniques ◽

10.47277/jett/9(2)210 ◽

2020 ◽

Vol 9 (1) ◽

pp. 203-210

Keyword(s):

Silver Nanoparticles ◽

Silver Nanoparticle ◽

Ag Nanoparticles ◽

Leaf Extract ◽

Anopheles Stephensi ◽

Methanol Extract ◽

Silver Ions ◽

Mosquito Vectors ◽

Chemical Insecticide ◽

Ft Ir

The available controlling agents for mosquito vectors are chemical insecticides and the frequent usage of these insecticides creating resistance among mosquito vectors and environmental pollutions. Thus, the study was designed to synthesize and characterize the Ag nanoparticles (AgNPs) through a methanol leaf extract of Ocimum canum and find the larvicidal prospective of the AgNPs on the 4th instar larvae of Anopheles stephensi, Culex quinquefasciatus, and Aedes aegypti. The obtained outcomes show that the methanol leaf extract of O. canum was effectively reduced the silver ions and produce constant silver nanoparticles. It was characterized and confirmed by various scientific techniques such as UV-vis spectrum, XRD, SEM, FT-IR and EDaX. Various concentrations (10, 50, 150, 200, and 250 ppm) of characterized nanoparticles were tested for larvicidal activity. The premier larval death was observed at 24 h of treatment on A. aegypti with LC50= 17.03 ppm, followed by C. quinquefasciatus with LC50= 14.89 ppm of methanol extract of O. canum and no death was noticed on A. stephensi. The LD90 value for A. aegypti and C. quinquefasciatus were 24.18 & 20.65 ppm respectively. Hence, the Ag nanoparticles produced from methanol leaf extract of O. canum retains efficiency to control A. aegypti and C. quinquefasciatus. Thus, it might support partially to replace the chemical insecticide which used against these vectors and might contribute to reduce environmental pollution.

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