ArticleScientific reports2021
Synthesis, characterisation and thermo-physical properties of highly stable graphene oxide-based aqueous nanofluids for potential low-temperature direct absorption solar applications.
Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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11 citing papers in PubMed, 44 citations in OpenAlex.
- Surface Engineering and Carbon Dioxide (COACS omega · 2026Article
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- Advances in Enhancing the Photothermal Performance of Nanofluid-Based Direct Absorption Solar Collectors.Nanomaterials (Basel, Switzerland) · 2025Review
- Acid-less direct gram scale exfoliation of graphite to partially oxidized graphene.Scientific reports · 2025Article
- Article
- Exploring the surge current degradation of natural ester oil-based nanofluids.Scientific reports · 2024Article
- Adsorption Ability of Graphene Aerogel and Reduced Graphene Aerogel toward 2,4-D Herbicide and Salicylic Acid.Gels (Basel, Switzerland) · 2023Article
- Nanobio Interface Between Proteins and 2D Nanomaterials.ACS applied materials & interfaces · 2023Review
- The Thermophysical and Physicochemical Properties of the Aqueous Dispersion of Graphene Oxide Dual-Beam Thermal Lens Spectrometry.Nanomaterials (Basel, Switzerland) · 2023Article
- Iron oxide/hydroxide-nitrogen doped graphene-like visible-light active photocatalytic layers for antibiotics removal from wastewater.Scientific reports · 2023Article
- The physical and optical investigations of the tannic acid functionalised Cu-based oxide nanostructures.Scientific reports · 2022Article
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Authors and funding
6 authors at 2 institutions in 1 country.
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Abstract
Two types of highly stable 0.1% graphene oxide-based aqueous nanofluids were synthesised and investigated. The first nanofluid (GO) was prepared under the influence of ultrasonic irradiation without surfactant. The second nanofluid was treated with tetra ethyl ammonium hydroxide to reduce the graphene oxide to form reduced graphene oxide (RGO) during ultrasonic irradiation. The GO and RGO powders were characterised by various techniques such as field emission scanning electron microscopy, transmission electron microscopy, X-ray diffraction and Raman. Also UV-visible absorption spectroscopy was carried out and band gap energies were determined. Optical band gap energies for indirect transitions ranged from 3.4 to 4.4 eV and for direct transitions they ranged between 2.2 and 3.7 eV. Thermal conductivity measurements of the GO-based aqueous nanofluid revealed an enhancement of 9.5% at 40 °C compared to pure water, while the RGO-based aqueous nanofluid at 40 °C had a value 9.23% lower than pure water. Furthermore, the photothermal response of the RGO-based aqueous nanofluid had a temperature increase of 13.5 °C, (enhancement of 60.2%) compared to pure water, the GO-based aqueous nanofluid only displayed a temperature rise of 10.9 °C, (enhancement of 46.6%) after 20 min exposure to a solar irradiance of 1000 W m
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