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Giri, R.
- Study of Physical and Acoustical Properties of Silver Nanofluid
Abstract Views :166 |
PDF Views:3
Authors
Affiliations
1 Department of Physics, Veer Surendra Sai University of Technology, Sambalpur -768018, IN
2 Department of Physics, Ravenshaw University, Cuttack -753003, IN
1 Department of Physics, Veer Surendra Sai University of Technology, Sambalpur -768018, IN
2 Department of Physics, Ravenshaw University, Cuttack -753003, IN
Source
Journal of Pure and Applied Ultrasonics, Vol 38, No 2 (2016), Pagination: 35-39Abstract
Nanoparticles (1-100 nm) in base fluids have numerous exceptional physiochemical properties absolutely different from those of bulk metal due to their extremely small size and large superficial area to volume. A one-step chemical method has been developed for the preparation of stable, non agglomerated silver nano fluid without using any surfactant. Silver nanofluid is prepared by using silver nitrate as a source for silver nanoparticles, distilled water as a base fluid, and tannic acid (tannin) as reducing agent of Ag+ ions. The formation of colloidal silver was followed by X-ray diffraction topography, UV-visible absorption spectroscopy monitoring the growth of the nanoparticles. Investigation of sample was carried out to study physical properties like absorbance; electrical conductance. The ultrasonic study has been done in different concentration of silver nano fluid at different temperature. The different acoustical parameters are calculated using the experimental data of ultrasonic velocity, density and viscosity. The characteristic behaviors of the acoustic parameters are observed at the particular temperature/particle concentration. The results are discussed in correlation with the thermophysical properties predicting the enhanced thermal conductivity of the samples. The absorbance values and the electrical conductance of the samples increase with the gradual addition of silver nitrate solution to tannic acid.Keywords
Nanofluid, Colloidal Solution, Ultrasonic Velocity, Acoustical Parameter, Absorbance, Electrical Conductance.Full Text
- Ultrasonic Study of Solvent Extractant in Nuclear Technology
Abstract Views :170 |
PDF Views:2
Authors
Affiliations
1 Department of Physics, Veer Surendra Sai Univesity of Technology, Sambalpur, Burla, IN
1 Department of Physics, Veer Surendra Sai Univesity of Technology, Sambalpur, Burla, IN
Source
Journal of Pure and Applied Ultrasonics, Vol 37, No 2-3 (2015), Pagination: 44-47Abstract
The experimental data of ultrasonic velocity and calculated values of density are used to study the different interactions in the extractants tri-n-butyl phosphate (TBP) with kerosene. The temperature of the system is maintained 303 K and the frequency used to measure the ultrasonic velocity are 1MHz, 3MHz and 5MHz. This study involves evaluation of different thermo-acoustic parameters along with the excess properties, which are interpreted in the light of inter-molecular interaction between polar extractants with non-polar diluents.The variation of these thermoacoustic parameters with concentration and frequency insight the information regarding the extraction process of some rare earth elements (REEs) like yttrium, lanthanum.Keywords
Solvent Extraction, TBP, Molecular Interactions, Intermolecular Free Length, Acoustic Impedance, Isentropic Compressibility.Full Text