Novel Nanofluids Based on Mesoporous Silica for Enhanced Heat Transfer
2011 (English)In: Journal of nanoparticle research, ISSN 1388-0764, E-ISSN 1572-896X, Vol. 13, no 11, 6201-6206 p.Article in journal (Refereed) Published
Nanofluids, which are liquids with engineered nanometer-sized particles suspensions, have drawn remarkable attraction from the researchers because of their enormous potential to enhance the efficiency in heat-transfer fluids. In the present study, water-based calcined mesoporous silica nanofluids were prepared and characterized. The commercial mesoporous silica (MPSiO2) nanoparticles were dispersed in deionized water by means of pH adjustment and ultrasonic agitation. MPSiO2 nanoparticles were observed to have an average particle size of 350 ± 100 nm by SEM analysis. The concentration of MPSiO2 was varied between 1 and 6 wt%. The physicochemical properties of nanofluids were characterized using various techniques, such as particle size analyzer, zeta-potential meter, TEM, and FT-IR. The thermal conductivity was measured by Transient Plane Source (TPS) method, and nanofluids showed a higher thermal conductivity than the base liquid for all the tested concentrations.
Place, publisher, year, edition, pages
2011. Vol. 13, no 11, 6201-6206 p.
Mesoporous Silica, Nanofluid, Thermal conductivity, Viscosity
IdentifiersURN: urn:nbn:se:kth:diva-124206DOI: 10.1007/s11051-011-0404-1ISI: 000297351600067ScopusID: 2-s2.0-84857059450OAI: oai:DiVA.org:kth-124206DiVA: diva2:633719
International Conference on Nanostructured Materials, Rome, Italy, September 13-17, 2010
QC 201404162013-06-272013-06-272014-04-16Bibliographically approved