Biosynthesis of Silver Nanoparticles using Histiopteris Incisa leaf extract and their Characterization and Thermophysical study

Document Type : Article


1 V.S.B. Engineering College, Karur ,Tamil Nadu, India – 639111

2 Paavai Engineering College, Namakkal, Tamil Nadu, India – 637018

3 PSG College of Technology,Coimbatore, Tamil Nadu, India – 641004


Nanofluids are nanoparticle suspensions in base fluids such as water, oil. Nanoparticles can alter the thermophysical, mechanical, and other characteristics of base fluids. These nanofluids exhibit significantly greater thermal properties than conventional working fluids, such as increased thermal conductivity by increasing the temperature and percentage volume in the base fluid. The significance of silver nanoparticles in enhancing coolant characteristics in heat transfer applications has been established. One of the synthesis technique is the biosynthesis technique, which is environmentally friendly, energy-efficient, large-scale, and low-cost. The biosynthesis of silver nanoparticles (AgNPs) utilising Histiopteris incisa (water fern) leaf extract was the focus of this study. The silver nanoparticles were prepared at room temperature at different concentrations, such as 1 mM, 3 mM, and 5 mM, using a stirrer for 1 h. Plant extract was combined with different concentrations of silver nitrate solutions and analysed for nanoparticles using UV-Vis spectroscopy. High-resolution transmission electron microscopy (HRTEM), X-ray Powder Diffraction (XRD), Dynamic light scattering (DLS), Zeta potential, and Fourier Transform Infrared Spectroscopy (FT-IR) were employed to analyse the silver nanoparticles. The AgNPs synthesised were spherical, having particle sizes ranging from 98 nm to 69 nm. Thermal conductivity increased with increasing temperature and volume concentration.


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