Green synthesis of silver nanoparticles using Jalapeño Chili extract and thermal lens study of acrylic resin nanocomposites

Luna-Sánchez, J.L.; Jiménez-Pérez, J. L.; Carbajal-Valdéz, R.; López-Gamboa, G.; Pérez-González, M.; Correa‐Pacheco, Zormy Nacary

doi:10.1016/j.tca.2019.178314

Cited by 37 publications

(10 citation statements)

References 24 publications

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“…On the contrary, TLS is highly sensitive to rather slight changes in the sample composition and also requires minimal sample preparation [ 42 , 43 ]. Emphasis of TLS application in this area is placed on the accurate calculation of thermophysical properties of nanofluids [ 36 , 43 , 44 , 45 , 46 ], biodiesel [ 47 , 48 ] solid multicomponent systems [ 49 ], nanoparticles [ 50 , 51 , 52 ], quantum dots [ 53 ], glasses [ 54 , 55 , 56 ], and semiconductors [ 57 ].…”

Section: Introductionmentioning

confidence: 99%

Accuracy of Measurements of Thermophysical Parameters by Dual-Beam Thermal-Lens Spectrometry

2023

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Thermal-lens spectrometry is a sensitive technique for determination of physicochemical properties and thermophysical parameters of various materials including heterogeneous systems and nanoparticles. In this paper, we consider the issues of the correctness (trueness) of measurements of the characteristic time of the thermal-lens effect and, thus, of the thermal diffusivity determined by dual-beam mode-mismatching thermal lensing. As sources of systematic errors, major factors—radiation sources, sample-cell and detector parameters, and general measurement parameters—are considered using several configurations of the thermal-lens setups, and their contributions are quantified or estimated. Furthermore, with aqueous ferroin and Sudan I in ethanol as inert colorants, the effects of the intermolecular distance of the absorbing substance on the correctness of finding the thermophysical parameters are considered. The recommendations for checking the operation of the thermal-lens setup to ensure the maximum accuracy are given. The results obtained help reducing the impact of each investigated factor on the value of systematic error and correctly measure the thermophysical parameters using thermal-lens spectrometry.

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Section: Introductionmentioning

confidence: 99%

Accuracy of Measurements of Thermophysical Parameters by Dual-Beam Thermal-Lens Spectrometry

2023

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“…An increase in D was observed not only with the addition of small amounts (μg and mg) of NPs to pure solvents (water, ethanol, and ethylene glycol) [26,37], but also with an increase in the nanophase concentration. This has been observed in an acrylic resin [25], water [41], ethanol and ethylene glycol [37].…”

Section: Ludoxmentioning

confidence: 67%

Thermal Diffusivity of Aqueous Dispersions of Silicon Oxide Nanoparticles by Dual-Beam Thermal-Lens Spectrometry

Khabibullin¹,

Usoltseva²,

Mikheev³

et al. 2023

Preprint

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The growing interest in heat-conducting nanofluids requires highly sensitive methods for analyzing thermal properties. Thermal-lens spectrometry, despite its advantages over classical methods, does not have a general approach to measuring and interpreting results for dispersed systems. In this paper, by the example of nanofluids of silicon oxide in water in a wide range of concentrations and sizes, the selection of measurement parameters for transient and steady-state thermal lensing is justified, and the interpretation of the results of thermal diffusivity measurements is substantiated. The features of measurements of thermal diffusivity by thermal lens spectrometry under stationary state for dispersed systems are considered. Using this approach, it is possible to detect and distinguish thermal effects with high accuracy. For dispersions of silicon oxide, with increasing concentration, the thermal diffusivity passes through a minimum. Silicon oxide dispersions can be used both as a coolant or as a heat-removing liquid by selecting the particle size and concentration.

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“…A broad single absorption band was observed between 300-600 nm corresponds to presence of larger size, spherical and polydisperse AgNPs [19]. Figure 3b showed the absorption spectrum of C. baccatum fruit extract and peak observed at 300-600 nm can be assigned to its bioactive compounds such as capsaicinoids, phenolic compounds, carotenoids, protein/enzymes, polysaccharides, amino acids and vitamins [19,22,27]. In Fig.…”

Section: Visual and Uv-visible Analysismentioning

confidence: 93%

“…Surface functionalization of AgNPs having different morphology alters the physico-chemical properties [19,20], which may play a crucial role in various bioengineering applications [9,21]. Recently, different MNPs were synthesized by using Capsicum species of different geographical origin including C. baccatum [3] and C. annuum fruit [22] for AuNPs [3], C. annuum [23][24] and C. frutescence fruit for AgNPs [25], C. annuum leaves for AuNPs [26], C. annuum var annuum (Jalapeño Chili) for AgNPs [27], Capsicum annuum for ZnO nanoparticles [28,29], etc has been already reported.…”

Section: Introductionmentioning

confidence: 99%

Ají Amarillo Chilli-Assisted Phytosynthesis of Silver Nanoparticles and Their H2O2 Sensing Ability

Kumar¹,

Smita²,

Debut³

et al. 2021

Preprint

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Scope of green chemistry in nanobiotechnology is generating research interest in the development of an ecofriendly synthesis of nanoparticles and their wide range of applications in engineering and biomedical field. In the present study, we report a simple and ecofriendly phytosynthesis of silver nanoparticles (AgNPs) using Ají amarillo chilli (Capsicum baccatum L.) fruit, where phytoconstituents of C. baccatum behaves as a reducing as well as a stabilizing agent. The phyotsynthesized AgNPs were characterized through various spectroscopic and microscopic techniques. The produced AgNPs showed surface plasmon resonance (SPR) at λmax = 458 nm and stable for 10 days, confirmed by UV-vis spectroscopy. Transmission electron microscopy (TEM) explained that produced AgNPs were almost spherical in shape with average size of 10-30 nm along with small aggregation. Aggregation of AgNPs was indicated in the dynamic light scattering (DLS) analysis. The results also demonstrate that as-synthesized AgNPs are low-cost and rapid alternative as optical chemical sensors and showed >50% H2O2 quenching/ sensing activity for 15 mins at room temperature.

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Green synthesis of silver nanoparticles using Jalapeño Chili extract and thermal lens study of acrylic resin nanocomposites

Cited by 37 publications

References 24 publications

Accuracy of Measurements of Thermophysical Parameters by Dual-Beam Thermal-Lens Spectrometry

Accuracy of Measurements of Thermophysical Parameters by Dual-Beam Thermal-Lens Spectrometry

Thermal Diffusivity of Aqueous Dispersions of Silicon Oxide Nanoparticles by Dual-Beam Thermal-Lens Spectrometry

Ají Amarillo Chilli-Assisted Phytosynthesis of Silver Nanoparticles and Their H2O2 Sensing Ability

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