The Effect of Ag-Decoration on rGO/Water Nanofluid Thermal Conductivity and Viscosity

Carbon-based nanomaterials have a high thermal conductivity, which can be exploited to prepare nanofluids. Graphene is a hydrophobic substance, and consequently, graphene-based nanofluid stability is improved by adding surfactants. An attractive alternative is the decoration of reduced graphene oxid...

Full description

Saved in:
Bibliographic Details
Published in:Nanomaterials (Basel, Switzerland) Switzerland), 2022-03, Vol.12 (7), p.1095
Main Authors: Lozano-Steinmetz, Felipe, Martínez, Victor A, Vasco, Diego A, Sepúlveda-Mualin, Alonso, Singh, Dinesh Patrap
Format: Article
Language:English
Subjects:
Acids
Ag decoration
Carbon
Decoration
Graphene
Heat conductivity
Heat transfer
Hydrophobicity
Nanocomposites
Nanofluids
Nanomaterials
Nanoparticles
Nanotechnology
Quantum dots
reduced graphene oxide
Rheology
Silver
Stability
Surfactants
Synthesis
Thermal conductivity
Viscosity
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Carbon-based nanomaterials have a high thermal conductivity, which can be exploited to prepare nanofluids. Graphene is a hydrophobic substance, and consequently, graphene-based nanofluid stability is improved by adding surfactants. An attractive alternative is the decoration of reduced graphene oxide (rGO) with metallic materials to improve the thermal conductivity without affecting the stability of nanofluids. This study focuses on the synthesis and characterization of rGO/Ag (0.1 wt.%) aqueous nanofluids. Moreover, the effects of the Ag concentration (0.01−1 M) on the thermal conductivity and viscosity during the synthesis of rGO/Ag composite are analyzed. The nanofluid thermal conductivity showed increases in relation to the base fluid, the most promising being 28.43 and 26.25% for 0.1 and 1 M of Ag, respectively. Furthermore, the nanofluids were Newtonian in the analyzed range of shear rates and presented a moderate increase (
ISSN:2079-4991
2079-4991
DOI:10.3390/nano12071095