Fabrication and material characterization of copper and copper–CNT micropillars

Ghanbari, Siavash; Darabi, J.

doi:10.1088/2053-1591/2/7/075501

Cited by 10 publications

(4 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The material and corrosion characterization study has been previously reported in detail in an earlier publication by the authors and it is not repeated here for brevity. The interested reader is referred to reference [28] for more detail. Briefly, corrosion resistance of the micropillars was studied using electrochemical impedance spectroscopy (EIS) in a 3.5 wt.…”

Section: Corrosion Characterization Resultsmentioning

confidence: 99%

Fabrication and Thermal Characterization of Composite Cu-CNT Micropillars for Capillary-driven Phase-Change Cooling Devices

Rojo

Ghanbari

Darabi

2019

Nanoscale and Microscale Thermophysical Engineering

View full text Add to dashboard Cite

This paper presents the fabrication, testing, and modeling of an array of composite copper-carbon nanotubes (Cu-CNT) micropillars as a wick structure for potential application in passive phasechange cooling systems. This novel wick structure has a larger spacing at the base of the micropillars to provide a higher liquid permeability and mushroom-like structures on the top surface of the micropillars with a smaller spacing to provide a greater capillary pressure. The composite Cu-CNT micropillars were fabricated by an electrochemical deposition method on a patterned copper template. Cauliflower-like nanostructures were then grown on the top surface of the micropillars using chronoamperometry technique to improve the capillary pressure and thermal performance of the wick structure. After successful fabrication of the micropillars, a series of tests were conducted to quantify the thermal performance of the wick structures. The results demonstrate superior thermal and corrosion performances for composite Cu-CNT micropillars compared to those of copper micropillars. Additionally, a thermal resistance network analysis was conducted to model the thermal performance of the fabricated mushroom-shaped micropillar array. Model predictions were compared with the experimental results and good agreement was observed.

show abstract

Section: Corrosion Characterization Resultsmentioning

confidence: 99%

Fabrication and Thermal Characterization of Composite Cu-CNT Micropillars for Capillary-driven Phase-Change Cooling Devices

Rojo

Ghanbari

Darabi

2019

Nanoscale and Microscale Thermophysical Engineering

View full text Add to dashboard Cite

show abstract

“…However, to the author's knowledge, only a single study besides Publication IV has investigated the corrosion performance of embedded carbon nanotubes inside a copper matrix. Ghanbari & Darabi (2015) reported that the corrosion resistance of their CNT-Cu micropillars was increased by six fold when compared with pure Cu micropillars.…”

Section: Corrosion Properties Of Carbon-cu Compositesmentioning

confidence: 99%

Corrosion behaviour of cast and deformed copper-carbon nanotube composite wires in chloride media

Hannula

Masquelier

Lassila

et al. 2018

Journal of Alloys and Compounds

View full text Add to dashboard Cite

I never actually seriously considered pursuing a doctoral degree before the opportunity presented itself. But I'm so glad I did. I want to thank my parents, Simo-Pekka and Leena, for always encouraging me to further educate myself. Thanks for always having the time to share your advice, even if I didn't think I needed it. I want to thank my sisters Laura and Krista and my brother-in-law Risto, who have always supported me (and kept me grounded!) in my endeavours. Lukas and Tomas, you are still too young to read this, but I'm so happy for having such awesome nephews in my life. Finally, thank you Tuuli for always being there for me and seeing the best in me.

show abstract

“…However, the methods employed to prepare such composites involve using a large amount of toxic and hazardous chemicals and may cause severe pollution . In terms of reliability and non‐toxicity, biosynthesis of nanomaterials is preferred over a physical and chemical approach owing to their reliability and non‐toxicity . Shewanella oneidensis MR‐1, which is widely distributed in the environment, is a bacterium noted for its ability to reduce metal ions .…”

Section: Introductionmentioning

confidence: 99%

“…[27][28][29] In terms of reliability and non-toxicity, biosynthesis of nanomaterials is preferred over a physical and chemical approach owing to their reliability and non-toxicity. [30][31][32][33][34][35][36] Shewanella oneidensis MR-1, which is widely distributed in the environment, is a bacterium noted for its ability to reduce metal ions. 37,38 Therefore, it has been used for the biofabrication of noble metals.…”

Section: Introductionmentioning

confidence: 99%

Biosynthesis of Cu nanoparticles supported on carbon nanotubes and its catalytic performance under different test conditions

Huang

Shi

2020

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

BACKGROUND 4‐Nitrophenol (4‐NP) is used widely in pesticides and other areas, but it can cause adverse environmental effects. Thus, it is desirable to convert it to 4‐aminophenol (4‐AP). Microbial synthesis of nanomaterials has the characteristics of low cost and effective control of secondary pollution. The catalytic performance of biosynthesized nanocomposites of copper (Cu) and carbon nanotubes (CNTs) in reducing 4‐NP to 4‐AP was evaluated. RESULTS Here, Cu nanoparticles were supported in situ on CNT nanocomposites via Shewanella oneidensis MR‐1 to form Cu/CNT nanocomposites. The prepared Cu/CNTs nanocomposites were characterized by transmission electron microscopy, X‐ray photoelectron spectroscopy, Raman spectrometry, and energy dispersed X‐ray spectroscopy. The findings showed that the Cu nanoparticles were successfully synthesized on the surface of the CNTs and that they had a typical diameter of 4 to 10 nm and high crystallinity. The catalytic performance of the nanocomposites for the reduction of 4‐NP was evaluated under different initial concentrations of Cu/CNT, pH, and temperatures. The best catalytic performance, in which 99.5% 4‐NP was reduced, was obtained with 3 wt% Cu/CNT at 45 °C and pH of 10 within 80 min. Accordingly, 4‐NP degradation followed first‐order kinetics, and the rate constant (k) has been calculated to be 0.0532 min−1. The Cu/CNT nanocomposite exhibited high stability catalytic efficiency at 95.2% even after six reaction cycles. CONCLUSION The study demonstrates an environmentally friendly method for synthesizing non‐noble metal nanocomposites and using them for the catalytic reduction of 4‐NP. The method could be applied to prepare other efficient and reusable metallic nanocatalysts. © 2020 Society of Chemical Industry

show abstract

Fabrication and material characterization of copper and copper–CNT micropillars

Cited by 10 publications

References 36 publications

Fabrication and Thermal Characterization of Composite Cu-CNT Micropillars for Capillary-driven Phase-Change Cooling Devices

Fabrication and Thermal Characterization of Composite Cu-CNT Micropillars for Capillary-driven Phase-Change Cooling Devices

Corrosion behaviour of cast and deformed copper-carbon nanotube composite wires in chloride media

Biosynthesis of Cu nanoparticles supported on carbon nanotubes and its catalytic performance under different test conditions

Contact Info

Product

Resources

About