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Updated: Feb 13, 2026

Synthesis of Non-uniformly Pr-doped SrTiO3 Ceramics and Their Thermoelectric Properties
Published on: August 15, 2015
Acid-functionalized carbon nanofibers for high stability, thermoelectrical and electrochemical properties of
Zafar Said1, Anis Allagui1, Mohammad Ali Abdelkareem2
1Dept. of Sustainable and Renewable Energy Engineering and Advanced Materials Research Center, University of Sharjah, PO Box 27272, Sharjah, United Arab Emirates; Center for Advanced Materials Research, University of Sharjah, PO Box 27272, Sharjah, United Arab Emirates.
Abstract:
Carbon-based nanofluids are viewed as promising thermal fluids for heat transfer applications. However, other properties, such as electrical conductivity and electrochemical behavior, are usually overlooked and rarely investigated despite their importance for the overall performance characterization of a given application. In this study, we synthesized PAN-based carbon nanofibers (CNF) by electrospinning, and characterized them using electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, Raman spectroscopy, and thermogravimetric analysis. Thermoelectrical and electrochemical measurements were carried out on nanofluids. We found that, although CNF nanofluids exhibit good thermal and electrical properties with a negligible corrosive effect, the suspensions tend to sediment within a few days. However, acid treatment of CNF (F-CNF), which resulted in the shortening of the fibers and the appearance of surface-oxygenated species, made F-CNF-based nanofluids exhibit superior stability in water that extended for more than 90 days, with consistent and superior thermal and electrical properties.
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