Silver nanoparticles for enhanced thermal energy storage of phase change materials

Pradeep, N.; Paramasivam, K.; Rajesh, Thangavel Pichaiappa; Purusothamanan, V. Subash; Iyahraja, S.

doi:10.1016/j.matpr.2020.02.671

Cited by 25 publications

(13 citation statements)

References 25 publications

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“…Furthermore, the thermal conductivity was 14.4 times greater than that of pure n-eicosane (3.56 W/mK), at a 15 wt% value. Pradeep et al (2020) investigate the impact of silver nanoparticles in a thermal energy storage using the PCM paraffin wax. The considered mass fractions of silver are 0.05 and 0.1% and the melting and solidification rates of the paraffin with and without it are studied.…”

Section: Methodsmentioning

confidence: 99%

Effectiveness of Thermal Properties in Thermal Energy Storage Modeling

Sevilla

Radulovic

2021

Front. Mech. Eng.

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This paper studies the influence of material thermal properties on the charging dynamics in a low temperature Thermal Energy Storage, which combines sensible and latent heat. The analysis is based on a small scale packed bed with encapsulated PCMs, numerically solved using COMSOL Multiphysics. The PCMs studied are materials constructed based on typical thermal properties (melting temperature, density, specific heat capacity (solid and liquid), thermal conductivity (solid and liquid) and the latent heat) of storage mediums in literature. The range of values are: 25–65°C for the melting temperature, 10–500 kJ/kg for the latent heat, 600–1,000 kg/m3 for the density, 0.1–0.4 W/mK (solid and liquid) for the thermal conductivity and 1,000–2,200 J/kgK (solid and liquid) for the specific heat capacity. The temperature change is monitored at three different positions along the tank. The system consists of a 2D tank with L/D ratio of 1 at a starting temperature of 20°C. Water, as the heat transfer fluid, enters the tank at 90°C. Results indicate that latent heat is a leading parameter in the performance of the system, and that the thermal properties of the PCM in liquid phase influence the overall heat absorption more than its solid counterpart.

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Section: Methodsmentioning

confidence: 99%

Effectiveness of Thermal Properties in Thermal Energy Storage Modeling

Sevilla

Radulovic

2021

Front. Mech. Eng.

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“…The scope of AgNPs applications is widespread in environmental and technological domains [13,14]. Solar energy conversion, catalysis, water treatment, antimicrobial activity, lithography and photocatalysis are studied by researchers to utilize functional features of AgNPs [15][16][17]. Some different approaches such as photochemical and electrochemical procedures, radiation, and Langmuir-Blodgett are currently widely used to synthesize AgNPs [18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Biosynthesis of silver nanoparticles using Poa bulbosa extract and their antibacterial activity

Allafchian

Jalali

Zare

et al. 2022

Micro & Nano Letters

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Plant tissues are regarded as rich sources of phytochemicals that can be used in the fabrication of nanometals. In this work, silver nanoparticles (AgNPs) are fabricated using an aqueous Poa bulbosa extract as an efficient reducing agent. The plasmon resonance peaks of the AgNPs recorded by UV–visible spectra during 25 min of the extract exposure to silver ions indicate a blue shift with the chemical reduction process. The FT‐IR spectrum of the Poa bulbosa extract shows the presence of chemical bonds of biomolecules that are involved in the reduction of Ag+ ions to AgNPs. The crystallite and particle sizes of AgNPs are estimated as 45.04 ± 13.6, 56.98 ± 13.08 and 43.14 ± 16.06 nm by XRD, SEM and TEM, respectively. DLS measurements showed a mean particle size of 119.26 ± 26.2 nm and zeta potential of −69.53 mV for the AgNPs indicating a proper colloidal stability. The most pronounced inhibition zone of antibacterial activity is found to be against Salmonella typhimurium, which is mainly attributed to the cell wall structure of the Gram‐negative strains. This is also demonstrated in the minimum inhibitory concentration (MIC) of 1.6 μg/mL in case of S. typhimurium.

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“…The impressive use of silver (Ag)-based nanosystems in modern society includes various applications, such as environment protection [ 1 , 2 , 3 ], energetic industry [ 4 , 5 , 6 ], electronics [ 7 , 8 , 9 ], detection platforms [ 10 , 11 , 12 ], pharmacological products [ 13 , 14 , 15 ] and implantable devices [ 16 , 17 , 18 ]. In particular, excellent mechanical properties and optical behavior, as well as intrinsic biocompatibility and antipathogenic effects, are characteristics that recommend silver nanoparticles (AgNPs) to be used in the development of specific and effective unconventional biomedical applications.…”

Section: ⧉ Introductionmentioning

confidence: 99%

Biodistribution of essential oil-conjugated silver nanoparticles

Gherasim

Grumezescu²,

Mogoşanu³

et al. 2021

Rom J Morphol Embryol

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The beneficial synergy between antimicrobial silver nanoparticles (AgNPs) and essential oils (EOs), with therapeutic effects that have been acknowledged and explored for a long time, opens the way towards developing new and promising alternatives for anti-infective therapies. With the aim to improve the cytocompatibility and stability of AgNPs and to overcome the volatilization of EOs, AgNPs conjugated with sage (Salvia officinalis) and cinnamon (Cinnamomum aromaticum) EOs were obtained in our study. The synthesis process was realized either by classical or ultrasound-assisted chemical reduction. Compositional and microstructural characterization of the as-obtained Ag@EO NPs was performed by X-ray diffraction (XRD), thermogravimetric analysis (TGA), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The biodistribution of Ag@EO NPs was evaluated on a mouse animal model.

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Silver nanoparticles for enhanced thermal energy storage of phase change materials

Cited by 25 publications

References 25 publications

Effectiveness of Thermal Properties in Thermal Energy Storage Modeling

Effectiveness of Thermal Properties in Thermal Energy Storage Modeling

Biosynthesis of silver nanoparticles using Poa bulbosa extract and their antibacterial activity

Biodistribution of essential oil-conjugated silver nanoparticles

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