Green synthesis of different ratios from bimetallic gold: Silver nanoparticles core@shell via laser ablation scattered in Chitosan-PVA matrix and its electrical conductivity behavior

Awwad, Nasser S.; El-Kader, M.F.H. Abd; Ibrahium, Hala A.; Asnag, G. M.; Morsi, M.A.

doi:10.1016/j.coco.2021.100678

Cited by 57 publications

(25 citation statements)

References 51 publications

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“…The significant advantages of polymeric blends are the properties of the final products, which can be achieved to required applications, which cannot be obtain via a single polymer. 1,14,15 Latterly, the uses of biopolymers materials have increased special interest as they are plentiful in nature and eco-friendly. 16,17 The increasing interest in biodegradables materials have aggravate the scientists to investigate widely as polymers electrolyte system 4,18 Different renewable resources of polymers are suitable to act as host polymers involving the watersoluble polymers CMC and SA.…”

Section: Introductionmentioning

confidence: 99%

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Structural, optical, thermal, and dielectric properties of carboxymethyl cellulose/sodium alginate blend/lithium titanium oxide nanoparticles: Biocomposites for lithium‐ion batteries applications

Abdallah

Morsi

Asnag

et al. 2022

Intl J of Energy Research

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Summary Nanocomposites samples of carboxymethyl cellulose (CMC)/sodium alginate (SA) blend (70/30 wt%)‐loaded lithium titanium oxide nanoparticles (Li4Ti5O12 NPs) were prepared using the casting method. X‐ray diffraction (XRD) spectra showed a decrease of the crystallinity with increasing Li4Ti5O12 concentrations. Fourier‐transform infrared (FT‐IR) inferred the interaction and complexation between the blend components (CMC/SA), also showed the interaction between Li4Ti5O12 and the functional groups of CMC/SA in particular CHOCH2 stretching, COO− stretching, and OH stretching vibrations. The optical properties of samples enhanced in optical energy gap as the concentration of Li4Ti5O12 increased. The differential scanning calorimetry (DSC) measurement showed that the pure sample has a single glass transition temperature (Tg), which denoted that the blend components were miscible. Also, DSC showed an enhancement in the thermal stability of polymeric blend after the addition of Li4Ti5O12. The highest value of AC conductivity was noticed at the highest concentration of Li4Ti5O12, which was also increased with increasing temperature. The maximum electrical conductivity obtained at 0.40 wt% of Li4Ti5O12 in the polymeric matrix is 9.35 × 10−6 S/cm at room temperature at 107 Hz. The complex permittivity (ε*) was decreased with the increase of both Li4Ti5O12 content and the temperature degree. At high frequencies, the decreasing trend of permittivity was assigned to dipoles orientation. These results indicated that CMC/SA/Li4Ti5O12 nanocomposites would be promising for energy storage capacitors applications and alternative separator rechargeable lithium‐ions batteries industries.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Structural, optical, thermal, and dielectric properties of carboxymethyl cellulose/sodium alginate blend/lithium titanium oxide nanoparticles: Biocomposites for lithium‐ion batteries applications

Abdallah

Morsi

Asnag

et al. 2022

Intl J of Energy Research

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“…Several works have shown that Ag incorporation improves the amorphous nature of the polymer-salt matrix by decreasing the crystalline phase and thus enhancing the ionic conductivity. [23][24][25][26][27][28] Thus, the present work is taken up to explore the possibility of tailoring the ionic conductivity in the PVA/NaBr matrix by incorporating AgNPs and verifying its suitability towards energy storage device applications as the ternary combination of PVA/NaBr with silver nanoparticles (AgNPs) has not been explored.…”

Section: Introductionmentioning

confidence: 99%

Tuning the ionic conductivity of flexible polyvinyl alcohol/sodium bromide polymer electrolyte films by incorporating silver nanoparticles for energy storage device applications

Cyriac

Padre

ISMAYIL

et al. 2022

J of Applied Polymer Sci

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In this present work, we have synthesized silver nanoparticles (AgNPs) using the chemical reduction method and systematically studied the effect of AgNPs of different loading into polyvinyl alcohol/sodium bromide (PVA/NaBr) polymer electrolytes. X‐ray diffraction and Fourier transform infrared spectroscopy confirmed the variation in the crystallinity and complexation with AgNPs loading, respectively. AgNPs are uniformly distributed in the polymer matrix as depicted in FESEM. According to transport property studies, it is observed that carrier concentration has a strong influence on ionic conductivity. Additionally, I‐t studies showed that most charge carriers are ions and not electrons. The sample PVA/NaBr with AgNPs, prepared from 6 mM AgNO3 solution (PNAg6) with ionic conductivity 1.22 × 10−4 S cm−1 (one order increase with respect to undoped sample) and highest electrochemical stability window (ESW) of 2.86 V, can be chosen as a suitable candidate for energy storage device applications.

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“…The morphology of the synthesized NPs was analyzed via transmission electron microscopy (TEM), demonstrating the spherical shape of the Ag−Au core−shell NPs with an average size range of 20−30 nm. 69 In addition, a bimetallic alloy can be treated with a laser beam to synthesize bimetallic NMNPs, which can be surface-functionalized for diagnostic applications.…”

Section: Fundamentals and Fabrication Of Nmnpsmentioning

confidence: 99%

“…They first manufactured AuNPs/AgNPs via the laser ablation method using a laser at 1064 nm wavelength with a 10 Hz pulse repetition rate every 7 ns before adding them to the chitosan–PVA matrix. The morphology of the synthesized NPs was analyzed via transmission electron microscopy (TEM), demonstrating the spherical shape of the Ag–Au core–shell NPs with an average size range of 20–30 nm . In addition, a bimetallic alloy can be treated with a laser beam to synthesize bimetallic NMNPs, which can be surface-functionalized for diagnostic applications.…”

Section: Fundamentals and Fabrication Of Nmnpsmentioning

confidence: 99%

Noble-Metal Nanoparticle-Based Colorimetric Diagnostic Assays for Point-of-Need Applications

Nilghaz

Mousavi

Tian

et al. 2021

ACS Appl. Nano Mater.

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Noble-metal nanoparticles (NMNPs) have unique properties beneficial for the development of novel reporting technologies to enhance the detection sensitivity and specificity of clinically validated biomarkers. Unique size-and shape-dependent optical, catalytic, and magnetic properties of NMNPs have enabled significant advances in biosensing due to facilitation of colorimetric detection, localized surface plasmon resonance, fluorescence enhancement/quenching, surface-enhanced Raman scattering, electrochemical activity, etc. Among these, the colorimetric detection method is highly attractive for use in point-of-need diagnostic applications in which color changes in the presence of biomarkers can be directly observed with the naked eye without the requirement of any equipment. This capability fulfills one of the main requirements set by the World Health Organization to provide people living in remote/regional/low-resource settings access to effective and comprehensive primary care. Although there are many scientific publications, the commercialization of NMNP-based colorimetric diagnostic assays for point-of-need applications is lagging mainly because of the lack of knowledge related to NMNPs in dealing with biological samples and sensitivity of the tests required for the real-world applications. Herein, we provide a critical review of the fundamentals of NMNPs and the recent progress in their usage for monitoring and detecting clinically relevant biomarkers in biological samples at the point-of-need to scientifically assess the benefits and limitations of this technology. We then compare the methods employed to enhance the sensitivity of colorimetric assays in detecting clinically validated target biomarkers in body fluids. Finally, we investigate the future trends and strategies that deserve more research to increase the successful commercialization of these assays.

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Green synthesis of different ratios from bimetallic gold: Silver nanoparticles core@shell via laser ablation scattered in Chitosan-PVA matrix and its electrical conductivity behavior

Cited by 57 publications

References 51 publications

Structural, optical, thermal, and dielectric properties of carboxymethyl cellulose/sodium alginate blend/lithium titanium oxide nanoparticles: Biocomposites for lithium‐ion batteries applications

Structural, optical, thermal, and dielectric properties of carboxymethyl cellulose/sodium alginate blend/lithium titanium oxide nanoparticles: Biocomposites for lithium‐ion batteries applications

Tuning the ionic conductivity of flexible polyvinyl alcohol/sodium bromide polymer electrolyte films by incorporating silver nanoparticles for energy storage device applications

Noble-Metal Nanoparticle-Based Colorimetric Diagnostic Assays for Point-of-Need Applications

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