Green in-situ synthesized silver nanoparticles embedded in bacterial cellulose nanopaper as a bionanocomposite plasmonic sensor

Pourreza, Nahid; Golmohammadi, Hamed; Naghdi, Tina; Yousefi, Hossein

doi:10.1016/j.bios.2015.06.041

Cited by 120 publications

(76 citation statements)

References 49 publications

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“…Synthesis of the Studied Nanocomposites : AgNP‐decorated nanopaper (NC1) was synthesized employing 15 pieces of wet BC. AgNPs were in situ synthesized following previous procedures . Briefly, square pieces of BC (2.5 × 2.5 cm) were soaked in 50 mL of ultrapure water and the corresponding pH was adjusted to 12 using a 2 m NaOH solution.…”

Section: Methodsmentioning

confidence: 99%

“…Herein, we propose a straightforward, cost‐effective, and scalable method to fabricate an SERS substrate based on graphene oxide/silver nanoparticle‐decorated nanopaper that outperforms the aforementioned LOD. The overall strategy is depicted in Figure A, where graphene oxide (GO) is conjugated with BC via hydrogen bonding occurring between hydroxyl groups in BC and hydroxyl groups in the basal plane of GO, after a washing procedure, silver nanoparticles (AgNPs) are in situ synthesized via reduction of AgNO 3 using the rich abundance of OH groups in the nanocomposite as a reducing agent . Moreover, the oxygen‐containing moieties of GO (epoxy, carbonyl, and carboxyl) operate as attachment points adsorbing Ag + ions.…”

Section: Introductionmentioning

confidence: 99%

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Simple, Flexible, and Ultrastable Surface Enhanced Raman Scattering Substrate Based on Plasmonic Nanopaper Decorated with Graphene Oxide

Rodríguez-Sevilla

Vázquez

Morales‐Narváez

2018

Advanced Optical Materials

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Surface enhanced Raman spectroscopy (SERS) is becoming a paramount analytical mechanism in nanotechnology and biological/chemical detection. However, fabrication of highly sensitive SERS substrates often involves expensive and time‐consuming procedures and the resulting materials require careful handling. Herein, a simple‐to‐manufacture, highly sensitive, and easy‐to‐handle SERS substrate enabled by plasmonic nanopaper decorated with graphene oxide flakes is reported. Owing to the physicochemical properties gathered by this SERS substrate, the nanocomposite leads to a flexible platform facilitating: a) analysis of the model analyte (Rhodamine 6G) via a high energy laser (457 nm) with negligible fluorescent background, which is important to achieve the maximum excitation of the respective localized surface plasmon resonance; b) a charge transferring phenomenon associated to the graphene derivative that, operating in synergy with the previous phenomenon, enhances the SERS signal and allows an analytical limit of detection of 0.13 × 10−9 m, which is about 2900‐fold lower than that obtained with the counterpart substrate made of silver nanoparticle‐decorated nanopaper; c) an ultrastable signal which remains completely constant at least during 50 days. Furthermore, the resulting SERS substrate is amenable to a cost‐efficient and large‐scale production process, which furthers laboratory and real world applications of SERS.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Simple, Flexible, and Ultrastable Surface Enhanced Raman Scattering Substrate Based on Plasmonic Nanopaper Decorated with Graphene Oxide

Rodríguez-Sevilla

Vázquez

Morales‐Narváez

2018

Advanced Optical Materials

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“…The optical absorption peak at 3 keV, typical for the metallic silver nanocrystallites due to surface plasmon resonance, is shown in Fig. (Pourreza et al, ; Shaban et al, ). The EDX analysis also shows other bands like C and bromide confirming that the synthesized cationic surfactants act as capping agents for AgNP.…”

Section: Resultsmentioning

confidence: 99%

The Tail Effect of Some Prepared Cationic Surfactants on Silver Nanoparticle Preparation and Their Surface, Thermodynamic Parameters, and Antimicrobial Activity

Shaban

Aiad

Yassin

et al. 2019

J Surfact & Detergents

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The surface parameters of some cationic surfactants having different hydrophobic alkyl chains were assessed in aqueous solution using different techniques; surface tension, ultraviolet‐Visible (UV–Vis) spectroscopy, and conductivity measurements. The obtained critical micelle concentration (CMC) for N‐(2‐((3,4‐dimethoxybenzylidene)amino)ethyl)‐N,N‐dimethyloctan‐1‐aminium bromide (DBAO), N‐(2‐((3,4‐dimethoxybenzylidene)amino)ethyl)‐N,N‐dimethyldodectan‐1‐aminium bromide (DBAD), and N‐(2‐((3,4‐dimethoxybenzylidene)amino)ethyl)‐N,N‐dimethylhexadectan‐1‐aminium bromide (DBAH) in aqueous solution using three techniques are nearly the same. Increasing the hydrophobic chain length enhances micelle formation. Raising the solution temperature from 25 to 65 °C also shows the same trend. The thermodynamic calculations outlined the adsorption propensity of the surfactants at the surface compared to their affinity to form micelles. Both micellization and adsorption processes are enhanced with both the hydrocarbon elongation and with raising the solution temperature. The effect of the surfactant tail on the preparation process of the silver nanoparticles (AgNP) was assessed and confirmed using transmission electron microscope (TEM), dynamic light scattering (DLS), and UV–Vis spectra. Increasing the surfactant tail leads to a smaller particle size with a narrow distribution. The stability of the prepared AgNP is enhanced with hydrophobic surfactant tail elongation as proved with increasing the zeta‐potential of the prepared AgNP colloid. The foaming power, interfacial tension, and emulsification stability of the DBAO, DBAD, and DBAH surfactants were determined. The DBAO, DBAD, and DBAH surfactants showed good antimicrobial activities against both bacteria (Gram positive and negative) and fungi, which have been enhanced because of incorporation of AgNP.

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“…Here, the possibility of exploiting BC based compounds for realizing optical sensors is addressed. A plasmonic sensor exploiting a BC thin film, with embedded silver nanoparticles has already been presented by NahidPourreza et al [17], but their approach (a BC nanopaper, with silver nanoparticles) differs from the one proposed in this paper mainly because the metal (gold in our case) covers the cellulose wires so configuring a kind of nanowires able to excite LSPR.…”

Section: Introductionmentioning

confidence: 91%

A Green Slab Waveguide for Plasmonic Sensors Based on Bacterial Cellulose

Cennamo

Trigona

Graziani

et al. 2019

7th International Symposium on Sensor Science

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We use as optical waveguide a green composite, based on bacterial cellulose (BC). More specifically, we have sputtered a thin gold film on this innovative slab waveguide for obtaining a Localized Surface Plasmon Resonance (LSPR) sensor. Experimental results confirm the possibility of using the BC based composite as an environmental friendly optical sensor platform with plasmonic capabilities, which could be exploited for realizing disposable biosensors. The new optical sensor has been used by combining it with optical fibers. The fibers connect the green disposable optical sensor with a light source and with a spectrometer. The device has been tested by measuring the refractive index of different water-glycerin solutions.

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Green in-situ synthesized silver nanoparticles embedded in bacterial cellulose nanopaper as a bionanocomposite plasmonic sensor

Cited by 120 publications

References 49 publications

Simple, Flexible, and Ultrastable Surface Enhanced Raman Scattering Substrate Based on Plasmonic Nanopaper Decorated with Graphene Oxide

Simple, Flexible, and Ultrastable Surface Enhanced Raman Scattering Substrate Based on Plasmonic Nanopaper Decorated with Graphene Oxide

The Tail Effect of Some Prepared Cationic Surfactants on Silver Nanoparticle Preparation and Their Surface, Thermodynamic Parameters, and Antimicrobial Activity

A Green Slab Waveguide for Plasmonic Sensors Based on Bacterial Cellulose

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