Ultrasonication an intensifying tool for preparation of stable nanofluids and study the time influence on distinct properties of graphene nanofluids – A systematic overview

Autor: Kumaran Kadirgama, K. Sudhakar, Devarajan Ramasamy, Madderla Sandhya, Wan Sharuzi Wan Harun
Jazyk: angličtina
Rok vydání: 2021
Předmět:
SEM
Scanning Electron Microscope
Acoustics and Ultrasonics
G/GO/Gt
Graphene/Graphene Oxide/Graphite
02 engineering and technology
Review
φ
Volumetric concentration (%)
01 natural sciences
Viscosity
Nanofluid
Probe/bath sonicator
Chemical Engineering (miscellaneous)
NPs
Nanoparticles
021001 nanoscience & nanotechnology
Heat Transfer
Chemistry
SDS/SDBS
Sodium Dodecyl Sulfate/Sodium Dodecyl Benzene Sulfonate
Volume fraction
wbf
Weight of base fluid
0210 nano-technology
Dispersion (chemistry)
Stability
XRD
X-ray powder diffraction
Materials science
ρp
Density of Nanoparticle (g/cm3
Thermal properties
Sonication
µ
Dynamic viscosity (kg/ms)
QC221-246
UV–Vis
Ultraviolet visible
FLG
Few layer Graphene
010402 general chemistry
CTAB
Cetrimonium bromide
TGA
Thermogravimetric analysis
Inorganic Chemistry
Graphene-Nanofluid
Fe3O4
Iron oxide
mV
millivolts
Nano
TEM
Transmission Electron Microscope
Environmental Chemistry
Radiology
Nuclear Medicine and imaging
kHz
kilohertz
QD1-999
ComputingMethodologies_COMPUTERGRAPHICS
TiO2
Titanium oxide
nm/μm
Nanometer/Micrometer
Organic Chemistry
Acoustics. Sound
DW
Distilled water
EG
Ethylene Glycol
0104 chemical sciences
ρbf
Density of base fluid (g/cm3)
w
weight of nanoparticle
FTIR
Fourier transform infrared
Chemical engineering
AFM
Atomic Force Microscopy
Heat transfer
SW/MW/CNT
Single wall/Multi wall/Carbon Nanotubes
Particle size
Zdroj: Ultrasonics Sonochemistry
Ultrasonics Sonochemistry, Vol 73, Iss, Pp 105479-(2021)
ISSN: 1873-2828
1350-4177
Popis: Graphical abstract
Highlights • Ultrasonication period is most crucial aspect in heat transfer via nanofluids. • Effect of ultrasonication time through microscopic observations is reviewed. • Retentive sonication period is suitable for proper scattering of particles. • Smaller particle size is influential on higher stability and reduced viscosity.
Optimum ultrasonication time will lead to the better performance for heat transfer in addition to preparation methods and thermal properties of the nanofluids. Nano particles are dispersed in base fluids like water (water-based fluids), glycols (glycol base fluids) &oils at different mass or volume fraction by using different preparation techniques. Significant preparation technique can enhance the stability, effects various parameters & thermo-physical properties of fluids. Agglomeration of the dispersed nano particles will lead to declined thermal performance, thermal conductivity, and viscosity. For better dispersion and breaking down the clusters, Ultrasonication method is the highly influential approach. Sonication hour is unique for different nano fluids depending on their response to several considerations. In this review, systematic investigations showing effect on various physical and thermal properties based on ultrasonication/ sonication time are illustrated. In this analysis it is found that increased power or time of ideal sonication increases the dispersion, leading to higher stable fluids, decreased particle size, higher thermal conductivity, and lower viscosity values. Employing the ultrasonic probe is substantially more effective than ultrasonic bath devices. Low ultrasonication power and time provides best outcome. Various sonication time periods by various research are summarized with respect to the different thermophysical properties. This is first review explaining sonication period influence on thermophysical properties of graphene nanofluids.
Databáze: OpenAIRE
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