International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 04 Special Issue: 09 | Sep -2017
p-ISSN: 2395-0072
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One Day International Seminar on Materials Science & Technology (ISMST 2017) 4th August 2017 Organized by
Department of Physics, Mother Teresa Women’s University, Kodaikanal, Tamilnadu, India
Synthesis, Ultrasonic Characterization and Comparative Studies of Silver and Gold Nanofluids at Various Temperature K. Poongothai1, R. Mary Mathelane2 1Research
center of Physics, Jayaraj Annapackiam College for Women (Autonomous), Periyakulam-625601, Theni District, Tamil Nadu, India. 2Associate Professor, Research center of Physics, Jayaraj Annapackiam College for Women (Autonomous). Periyakulam-625601, Theni District, Tamil Nadu, India. ----------------------------------------------------------------------***--------------------------------------------------------------------
Abstract -
world. Which have great trust in the production by machines? But to increase their efficiency by all means they completely depends on traditional heat transfer fluids which delayed the world from get going. This explains the revolution innovation of nanofluis which has the capacity to take our world for a big leap. Nanoparticle of materials. Such as nitride ceramics, carbide ceramics, metals metallic oxides, semiconductors, carbon nanotubes (single, double, multi walled), alloyed nanoparticles etc. has utilized in the process of preparation of these revolutionized nanofluids. This explains the current efforts to further increase the efficiency of thermal conductivity nature of coolants suspending solid is a century old choice, which was pioneered by Maxwell. Maxwell demonstrated the theoretical part by inverting the formula calculate the effective thermal conductivity of suspended particles in liquid medium. This becomes the origin to the begin for not alone theoretical but also for experimental studies the most remarkable ones were Hamilton-crosser and waps[3]. No or very little agglomeration of dispersed particle holds the hey to reach the stable nano fluid which has the tendency to show the genuine nano behavior. This can be achieved by using different techniques which included physical, chemical or even electrical. The wide spread technique which is a wail now to using ultrasonic [4]. In few rare occasions, the dispersion uses some stabilizing agents also depict all the best way to produce nanofluids is in the process of single step method [5]. This method have the flexibility of producing nanofluid itself instead of any intermediates or producing nanofluids so by using this method [5,6]. One can reduce the probability of agglomeration it all formulated a single step direct evaporation method [7]. To prepare Gold, Silver and Platinum nanoparticles Feng et al [8] developed aqueous organic phase transfer method. To synthesize copper nanofluids wei[9] et al continuous flow micro fluidic micro reactors. Measuring the thermal diffusivity of gold nanoparticle which is spherical in shape and also in different size and is formulated by Gerardo et al [10]. Ultrasonic nondestructive technique to characterize the
Gold and Silver Nanofluids have been synthesized by One-step novel method using chloroauric acid and silver nitrate that have many interesting properties and the distinctive feature offers unprecedented potential for many applications. 0.1M chloroauric acid and silver nitrate is reduced by Ethylene glycol in the presence of sodium lauxyl sulphate. At various temperature, the value of frequencies maintained at 12MHZ and 10MHZ than the value of ultrasonic velocities are computed. The ultrasonic velocity, compressibility, acoustic impedance, intermolecular free path length, bulk modulus, rao’s constant and surface tension were calculated by nanofluid interferometer model NF-12X. . The density of the Nanofluids which is prepared is calculated by using the specific gravity bottle. Additionally the fluids were analysis by UV, FTIR, XRD, and SEM. These techniques confirm that the synthesized particles are gold and silver nanofluids. The electrical conductivity of synthesized nanofluids was measured by digital electrical conductivity meter model. The end result data’s equated with the idealistic date rates the graph has been plotted for various temperatures. Keywords: Gold and silver nanofluid1, ultrasonic parameters2, XRD3, SEM4, Electrical conductivity5.
1. INTRODUCTION The most recent sophisticated seekings in nano technology have arised with the help o new emerging nano heat transfer fluids which are the get of innovations of this century irrespective of any field of research. This nanofluids has been prepared by sprinkling and suspending nano materials in traditional heat transfer fluids with the help o present technology. The studies shown suspending nano particle have likely to heighten the thermo physical, transport and radioactivity of the traditional fluid which in this case is also called as the base fluid. Since the property of fluid is enhanced, the fluid posses the ability to transfer more heat than the past which is the basic requirement of the current globalised
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