A novel one-step chemical method for preparation of copper nanofluids

Zhu, Haitao; Lin, Yusheng; Yin, Yansheng

doi:10.1016/j.jcis.2004.04.026

Cited by 409 publications

(168 citation statements)

References 16 publications

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“…The single-step method is a process that combines synthesis of nanoparticles and preparation of nanofluids [8]. The agglomeration of nanoparticles can be reduced since drying, storage, transportation and dispersion of nanoparticles are avoided [9]. However, it is highly impractical to be applied at industrial scale [6].…”

Section: Introductionmentioning

confidence: 99%

Thermal Conductivity and Specific Heat Capacity of Dodecylbenzenesulfonic Acid-Doped Polyaniline Particles—Water Based Nanofluid

2015

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Nanofluid has attracted great attention due to its superior thermal properties. In this study, chemical oxidative polymerization of aniline was carried out in the presence of dodecylbenzenesulfonic acid (DBSA) as a dopant. Particles of DBSA-doped polyaniline (DBSA-doped PANI) with the size range of 15 to 50 nm were obtained, as indicated by transmission electron microscope (TEM). Results of ultra violet-visible (UV-Vis) absorption and Fourier transform infrared (FTIR) spectroscopies as well as thermogravimetric analysis showed that PANI nanoparticles were doped with DBSA molecules. The doping level found was 36.8%, as calculated from elemental analysis data. Thermal conductivity of water was enhanced by 5.4% when dispersed with 1.0 wt% of DBSA-PANI nanoparticles. Specific heat capacity of water-based nanofluids decreased with increasing amount of DBSA-PANI nanoparticles.

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Section: Introductionmentioning

confidence: 99%

Thermal Conductivity and Specific Heat Capacity of Dodecylbenzenesulfonic Acid-Doped Polyaniline Particles—Water Based Nanofluid

2015

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“…Here, the drawback of this method is that the copper salt should be heated to its boiling point. Recently, Zhu et al (2004) developed an efficient novel one-step chemical method for preparing copper nanofluids, and this method has the advantages in terms of controlling the particle size, reducing agglomeration of the nanoparticles and producing nanofluids in a large scale.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of copper oxide nanofluid for heat transfer applications

et al. 2013

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Copper oxide nanofluid has been prepared by single-step wet chemical precipitation method. The preparation of nanofluid is carried out by reducing copper chloride with sodium hydroxide as reducing agent in deionised water as base fluid by means of conventional heating. The characterization of sample nano powder is done by X-ray diffraction (XRD), EDXA, SEM, and TGA. The mean size of the particle was determined from the XRD pattern by using the Scherrer formula and the average particle size was found to be 20 nm. Also an increase in thermal conductivity of the prepared copper oxide nanofluid was found to be 12.4 % compared to deionised water.

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“…In single-step method nanoparticles are synthesized and dispersed simultaneously with same time in base fluid whereas, two-step method nanoparticles and nanofluid dispersion process is separated. Wang et al (2007) and Zhu et al (2004) concluded that a single-step method is usually used for metal nanofluid preparation and for combining process for nanoparticles and nanofluid synthesis are done with the help of physical vapor deposition (PVD) method or a liquid chemical method. While two-step synthesis process is mainly used for oxide nanoparticles contains nanofluid to prevent agglomeration.…”

Section: Preparation Of Nanofluidsmentioning

confidence: 99%

Temperature-dependent thermal conductivity and viscosity of synthesized α-alumina nanofluids

Shah

Ranjan

Davariya³

et al. 2017

Appl Nanosci

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In the present work, we focused on the thermal conductivity and viscosity of the synthesis as well as characterize metal oxide a-Al 2 O 3 nanoparticles suspended in distilled water:ethylene glycol (60:40) ratio based stable colloidal nanofluid. The band gap of the a-Al 2 O 3 with and without surfactant is 4.42 and 4.59 eV, respectively. The results show that nanoparticle with polyvinyl alcohol surfactant has smaller crystalline size (*23 nm) than without surfactant (*36 nm). The synthesized nanofluids have good stability after 15 days of synthesis which is characterized by zeta potential analyzer. Thermal conductivity and viscosity are measured for 0.1 and 0.5 wt% concentration of alumina for with and without surfactant. The concentration of particles and added surfactant are responsible for stable fluid, thermal conductivity enhancement, and viscosity of nanofluid with respect to temperature. Therefore, the novel combinations of characterized properties of a-Al 2 O 3 nanofluid has proved to be the best thermally stable heat transfer fluid compared to conventional cooling fluids.

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A novel one-step chemical method for preparation of copper nanofluids

Cited by 409 publications

References 16 publications

Thermal Conductivity and Specific Heat Capacity of Dodecylbenzenesulfonic Acid-Doped Polyaniline Particles—Water Based Nanofluid

Thermal Conductivity and Specific Heat Capacity of Dodecylbenzenesulfonic Acid-Doped Polyaniline Particles—Water Based Nanofluid

Preparation and characterization of copper oxide nanofluid for heat transfer applications

Temperature-dependent thermal conductivity and viscosity of synthesized α-alumina nanofluids

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