Title : ( Structural, electrical, and rheological properties of palladium/silver bimetallic nanoparticles prepared by conventional and ultrasonic-assisted reduction methods )
Authors: hossein azizi toupkanloo , Elaheh Kafshdare Goharshadi , Paul Nancarrow ,
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Abstract
Polyvinylpyrrolidone stabilized Pd/Ag bimetallic nanoparticles (NPs) with average particle sizes of 9 and 6 nm were synthesized by simultaneous reduction in the presence and absence of ultrasound waves, respectively. The prepared NPs were characterized by six methods including X-ray diffraction (XRD), transmission electron microscopy (TEM), high resolution-TEM (HRTEM), UV–vis spectroscopy, scanning tunneling microscopy (STM), and energy dispersive X-ray (EDX) analysis. The rheological properties of Pd/Ag NPs in ethylene glycol as a base fluid with various mass fractions of NPs from 2% to 5% at different temperatures were studied experimentally and theoretically. The experimental results showed that vis-cosity of Pd/Ag NPs in ethylene glycol increases with increasing particle mass fraction and decreases with increasing temperature. A maximum of 31.58% increase in viscosity of ethylene glycol at 20C was observed when 5% Pd/Ag NPs was added. Measurement of the electrical conductivity of nanofluids of Pd/Ag bimetallic NPs in distilled water at different mass fractions and temperatures was performed. A 3841% increase in electrical conductivity of distilled water at 25C was observed when 1% Pd/Ag NPs was added. Both the rheological and electrical properties of Pd/Ag bimetallic NPs were measured in eth-ylene glycol and distilled water, respectively for the first time
Keywords
Alloy structure; Bimetallic nanoparticles; Ultrasonic; Rheological behavior; Electrical properties
@article{paperid:1040716,
author = {Azizi Toupkanloo, Hossein and Kafshdare Goharshadi, Elaheh and Paul Nancarrow},
title = {Structural, electrical, and rheological properties of palladium/silver bimetallic nanoparticles prepared by conventional and ultrasonic-assisted reduction methods},
journal = {Advanced Powder Technology},
year = {2014},
volume = {25},
number = {2},
month = {March},
issn = {0921-8831},
pages = {801--810},
numpages = {9},
keywords = {Alloy structure; Bimetallic nanoparticles; Ultrasonic; Rheological behavior; Electrical properties},
}
%0 Journal Article
%T Structural, electrical, and rheological properties of palladium/silver bimetallic nanoparticles prepared by conventional and ultrasonic-assisted reduction methods
%A Azizi Toupkanloo, Hossein
%A Kafshdare Goharshadi, Elaheh
%A Paul Nancarrow
%J Advanced Powder Technology
%@ 0921-8831
%D 2014
