Enhancing the Hydrophobicity of a Copper Pipe by Electrophoretic Deposition of Graphene Oxide

Abstract:

Thin film coatings of graphene oxide (GO) onto copper pipe was investigating using electrophoretic deposition (EPD) technique. Graphite oxide was produced from graphite powder by chemical oxidation using modified Hummers' method. An aqueous colloidal suspension of graphene oxide was prepared by exfoliation of the graphite oxide via ultrasonic treatment. GO coatings were deposited on copper pipes through EPD from GO aqueous suspension. The EPD parameters such as voltage, time and particle concentration were optimized to obtain uniform GO coatings. The optimal EPD conditions for well-formed deposits were observed when the operating voltage was equal to 30 V and 90 s deposition time. The thin film coated copper pipe was characterized using various techniques such as SEM, XRD and contact angle. XRD confirmed that GO was reduced during the EPD process itself due to the removal of oxygen containing functional groups. SEM images elucidated the formation of GO thin layer onto copper pipe with thickness 5 μm. The contact angle improved from 70° for bare copper to 102.4° for GO coating.

• Periodical: Key Engineering Materials (Volume 801)
• Pages: 153-159
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.801.153
• Online since: May 2019
• Authors: Essam Hares*, Ahmed Hassan El-Shazly, Marwa F. El Kady, A.S. Hammad
• Keywords: Electrophoretic Deposition, Graphene Oxide, Hydrophobicity, Thin Film

References

[1] D. Orejon, O. Shardt, N.S.K. Gunda, T. Ikuta, K. Takahashi, Y. Takata, S.K. Mitra, Simultaneous dropwise and filmwise condensation on hydrophilic microstructured surfaces, Int. J. Heat Mass Transf. 114 (2017) 187–197.

DOI: 10.1016/j.ijheatmasstransfer.2017.06.023

[2] Z. Li, Q. Kong, X. Ma, D. Zang, X. Guan, X. Ren, Dynamic effects and adhesion of water droplet impact on hydrophobic surfaces: Bouncing or sticking, Nanoscale. 9 (2017) 8249–8255.

DOI: 10.1039/c7nr02906c

[3] M. Miwa, A. Nakajima, A. Fujishima, K. Hashimoto, T. Watanabe, Effects of the surface roughness on sliding angles of water droplets on superhydrophobic surfaces, Langmuir. 16 (2000) 5754–5760.

DOI: 10.1021/la991660o

[4] N. Miljkovic, E.N. Wang, Condensation heat transfer on superhydrophobic surfaces, MRS Bull. 38 (2013) 397–406.

DOI: 10.1557/mrs.2013.103

[5] D.J. Preston, D.L. Mafra, N. Miljkovic, J. Kong, E.N. Wang, Scalable graphene coatings for enhanced condensation heat transfer, Nano Lett. 15 (2015) 2902–2909.

DOI: 10.1021/nl504628s

[6] S.S.M.& A.K. Priya Varshney, Superhydrophobic coatings for aluminium surfaces synthesized by chemical etching process, Int. J. Smart Nano Mater. 7 (2016) 248–264.

DOI: 10.1080/19475411.2016.1272502

[7] J. Yang, H. Li, T. Lan, L. Peng, R. Cui, H. Yang, Preparation, characterization, and properties of fluorine-free superhydrophobic paper based on layer-by-layer assembly, Carbohydr. Polym. 178 (2017) 228–237.

DOI: 10.1016/j.carbpol.2017.09.040

[8] N. Miljkovic, R. Enright, Y. Nam, K. Lopez, N. Dou, J. Sack, E.N. Wang, Jumping-droplet-enhanced condensation on scalable superhydrophobic nanostructured surfaces, Nano Lett. 13 (2013) 179–187.

DOI: 10.1021/nl303835d

[9] X. Chen, J.A. Weibel, S. V. Garimella, Exploiting Microscale Roughness on Hierarchical Superhydrophobic Copper Surfaces for Enhanced Dropwise Condensation, Adv. Mater. Interfaces. 2 (2015).

DOI: 10.1002/admi.201400480

[10] M. Raimondo, F. Veronesi, G. Boveri, G. Guarini, A. Motta, R. Zanoni, Superhydrophobic properties induced by sol-gel routes on copper surfaces, Appl. Surf. Sci. 422 (2017) 1022–1029.

DOI: 10.1016/j.apsusc.2017.05.257

[11] J. Li, Z. Huang, F. Wang, X. Yan, Y. Wei, One-step preparation of transparent superhydrophobic coatings using atmospheric arc discharge, Appl. Phys. Lett. 107 (2015).

DOI: 10.1063/1.4927745

[12] O.O. Van der Biest, L.J. Vandeperre, ELECTROPHORETIC DEPOSITION OF MATERIALS, Annu. Rev. Mater. Sci. 29 (1999) 327–352.

DOI: 10.1146/annurev.matsci.29.1.327

[13] A.R.B. James H. Dickerson, Electrophoretic deposition of nanometerials, 2012.

[14] M. Diba, D.W.H. Fam, A.R. Boccaccini, M.S.P. Shaffer, Electrophoretic deposition of graphene-related materials: A review of the fundamentals, Prog. Mater. Sci. 82 (2016) 83–117.

DOI: 10.1016/j.pmatsci.2016.03.002

[15] L. Besra, M. Liu, A review on fundamentals and applications of electrophoretic deposition (EPD), Prog. Mater. Sci. 52 (2007) 1–61.

DOI: 10.1016/j.pmatsci.2006.07.001

[16] B.P. Singh, B.K. Jena, S. Bhattacharjee, L. Besra, Development of oxidation and corrosion resistance hydrophobic graphene oxide-polymer composite coating on copper, Surf. Coatings Technol. 232 (2013) 475–481.

DOI: 10.1016/j.surfcoat.2013.06.004

[17] S.J. An, Y. Zhu, S.H. Lee, M.D. Stoller, T. Emilsson, S. Park, A. Velamakanni, J. An, R.S. Ruoff, Thin film fabrication and simultaneous anodic reduction of deposited graphene oxide platelets by electrophoretic deposition, J. Phys. Chem. Lett. 1 (2010) 1259–1263.

DOI: 10.1021/jz100080c

[18] D. Li, M.B. Müller, S. Gilje, R.B. Kaner, G.G. Wallace, Processable aqueous dispersions of graphene nanosheets, Nat. Nanotechnol. 3 (2008) 101–105.

DOI: 10.1038/nnano.2007.451

[19] S. Stankovich, R.D. Piner, X. Chen, N. Wu, S.T. Nguyen, R.S. Ruoff, Stable aqueous dispersions of graphitic nanoplatelets via the reduction of exfoliated graphite oxide in the presence of poly(sodium 4-styrenesulfonate), J. Mater. Chem. 16 (2006) 155–158.

DOI: 10.1039/b512799h

[20] W.S. Hummers, R.E. Offeman, Preparation of Graphitic Oxide, J. Am. Chem. Soc. 80 (1958) 1339.

DOI: 10.1021/ja01539a017

[21] J. Takadoum, H. Houmid Bennani, Influence of substrate roughness and coating thickness on adhesion, friction and wear of TiN films, Surf. Coatings Technol. 96 (1997) 272–282.

DOI: 10.1016/S0257-8972(97)00182-5

[22] C.-N. Yeh, K. Raidongia, J. Shao, Q.-H. Yang, J. Huang, On the origin of the stability of graphene oxide membranes in water, Nat. Chem. 7 (2015) 166–170.

DOI: 10.1038/nchem.2145