Technical note microfluidic method for synthesizing cu2o nanofluids

Xiaohao Wei; Liqiu Wang

doi:10.2514/1.48984

Technical note microfluidic method for synthesizing cu₂o nanofluids

Xiaohao Wei, Liqiu Wang

Research output: Journal article publication › Journal article › Academic research › peer-review

12 Citations (Scopus)

Abstract

A microfluidic system for synthesizing Cu₂O nanofluids was reported. The reaction between cupric-sulphate (CuSO₄) and sodium-hydrate (NaOH) yielded cupric-hydroxide (Cu(OH)₂) and sodium sulfate (Na₂SO₄). The cupric-hydroxide Cu(OH)₂ quickly decomposed into cupric-oxide (CuO) and water (H₂O) under some heating. The effect of fluid flow rates by setting the CuSO₄ was examined at flow rate at 50, 75, 100, 125, 150, 200, 250, and 300 μL/min, respectively, and keeping the flow rate ratio of CuSO₄, NaOH, and N₂H₄ fluids as 1:1:2. The results showed that the fluid was very stable, and no bulk phase separation was observed for all samples after 24 h of its preparation. The scanning electron microscope (SEM) images of nanoparticles showed that the particles could be changed from a spherical shape to a polyhedral by varying the CuSO₄ concentration and/or fluid flow rates.

Original language	English
Pages (from-to)	445-448
Number of pages	4
Journal	Journal of Thermophysics and Heat Transfer
Volume	24
Issue number	2
DOIs	https://doi.org/10.2514/1.48984
Publication status	Published - 2010
Externally published	Yes

ASJC Scopus subject areas

Condensed Matter Physics

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10.2514/1.48984

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title = "Technical note microfluidic method for synthesizing cu2o nanofluids",

abstract = "A microfluidic system for synthesizing Cu2O nanofluids was reported. The reaction between cupric-sulphate (CuSO4) and sodium-hydrate (NaOH) yielded cupric-hydroxide (Cu(OH)2) and sodium sulfate (Na2SO4). The cupric-hydroxide Cu(OH)2 quickly decomposed into cupric-oxide (CuO) and water (H2O) under some heating. The effect of fluid flow rates by setting the CuSO4 was examined at flow rate at 50, 75, 100, 125, 150, 200, 250, and 300 μL/min, respectively, and keeping the flow rate ratio of CuSO4, NaOH, and N2H4 fluids as 1:1:2. The results showed that the fluid was very stable, and no bulk phase separation was observed for all samples after 24 h of its preparation. The scanning electron microscope (SEM) images of nanoparticles showed that the particles could be changed from a spherical shape to a polyhedral by varying the CuSO4 concentration and/or fluid flow rates.",

author = "Xiaohao Wei and Liqiu Wang",

note = "Funding Information: The financial support from the Research Grants Council of Hong Kong (GRF718009) is gratefully acknowledged.",

year = "2010",

doi = "10.2514/1.48984",

language = "English",

volume = "24",

pages = "445--448",

journal = "Journal of Thermophysics and Heat Transfer",

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AU - Wei, Xiaohao

AU - Wang, Liqiu

N1 - Funding Information: The financial support from the Research Grants Council of Hong Kong (GRF718009) is gratefully acknowledged.

PY - 2010

Y1 - 2010

N2 - A microfluidic system for synthesizing Cu2O nanofluids was reported. The reaction between cupric-sulphate (CuSO4) and sodium-hydrate (NaOH) yielded cupric-hydroxide (Cu(OH)2) and sodium sulfate (Na2SO4). The cupric-hydroxide Cu(OH)2 quickly decomposed into cupric-oxide (CuO) and water (H2O) under some heating. The effect of fluid flow rates by setting the CuSO4 was examined at flow rate at 50, 75, 100, 125, 150, 200, 250, and 300 μL/min, respectively, and keeping the flow rate ratio of CuSO4, NaOH, and N2H4 fluids as 1:1:2. The results showed that the fluid was very stable, and no bulk phase separation was observed for all samples after 24 h of its preparation. The scanning electron microscope (SEM) images of nanoparticles showed that the particles could be changed from a spherical shape to a polyhedral by varying the CuSO4 concentration and/or fluid flow rates.

AB - A microfluidic system for synthesizing Cu2O nanofluids was reported. The reaction between cupric-sulphate (CuSO4) and sodium-hydrate (NaOH) yielded cupric-hydroxide (Cu(OH)2) and sodium sulfate (Na2SO4). The cupric-hydroxide Cu(OH)2 quickly decomposed into cupric-oxide (CuO) and water (H2O) under some heating. The effect of fluid flow rates by setting the CuSO4 was examined at flow rate at 50, 75, 100, 125, 150, 200, 250, and 300 μL/min, respectively, and keeping the flow rate ratio of CuSO4, NaOH, and N2H4 fluids as 1:1:2. The results showed that the fluid was very stable, and no bulk phase separation was observed for all samples after 24 h of its preparation. The scanning electron microscope (SEM) images of nanoparticles showed that the particles could be changed from a spherical shape to a polyhedral by varying the CuSO4 concentration and/or fluid flow rates.

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JO - Journal of Thermophysics and Heat Transfer

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ER -

Technical note microfluidic method for synthesizing cu₂o nanofluids

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