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functionalized-multi-walled-carbon-nanotubes
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Electrodeposited multi-walled carbon nanotubes on Ag-loaded TiO2 nanotubes/Ti plates as a new photocatalyst for dye degradation
, Article RSC Advances ; Volume 5, Issue 56 , 2015 , Pages 44840-44846 ; 20462069 (ISSN) ; Faraji, M ; Gobal, F ; Gholami, M. R ; Sharif University of Technology
Royal Society of Chemistry
2015
Abstract
MWCNTs/Ag/TiO2NTs plates were synthesized via electrochemical reduction of functionalized multiwalled carbon nanotubes (MWCNTs) on Ag/TiO2NTs. The loading of silver nanoparticles was carried out by electroless reduction of Ag1+ onto TiO2 nanotubes previously formed by anodizing titanium. The SEM analysis revealed that MWCNTs were loaded significantly on the as-prepared Ag/TiO2NTs, where nanoparticles of Ag had grown on the walls of TiO2NTs. The photocatalytic activity of the synthesized plates was evaluated by the photodegradation of Methyl Orange (MO) dye under UV light irradiation. The results indicated that the MWCNTs/Ag/TiO2NTs demonstrated improved efficiency for MO photodegradation in...
Heat transfer in turbulent nanofluids: separation flow studies and development of novel correlations
, Article Advanced Powder Technology ; Volume 31, Issue 8 , August , 2020 , Pages 3120-3133 ; Shafii, M. B ; Salami, E ; Muhamad, M. R ; Yarmand, H ; Gharehkhani, S ; Chowdhury, Z. Z ; Kazi, S. N ; Badarudin, A ; Sharif University of Technology
Elsevier B.V
2020
Abstract
Convective heat transfer plays a significant role in numerous industrial cooling and heating applications. This method of heat transfer can be passively improved by reconfiguring flow passage, fluid thermophysical properties, or boundary conditions. The broader scope of nanotechnology introduced several studies of thermal engineering and heat transfer. Nano-fluids are one of such technology which can be thought of engineered colloidal fluids with nano-sized particles. In the present study, turbulent forced convection heat transfer to nanofluids in an axisymmetric abrupt expansion heat exchanger was investigated experimentally. During heat transfer investigation, the functionalized...