Structural thermal stability of graphene oxide-doped copper-cobalt oxide coatings as a solar selective surface

M.M. Rahman; Z-T Jiang; C-Y Yin; L.S. Chuah; H-L Lee; A. Amri; B-M Goh; B.J. Wood; C. Creagh; N. Mondinos; M. Altarawneh; B.Z. Dlugogorski

doi:10.1016/j.jmst.2016.09.002

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Structural thermal stability of graphene oxide-doped copper-cobalt oxide coatings as a solar selective surface

Journal article

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Structural thermal stability of graphene oxide-doped copper-cobalt oxide coatings as a solar selective surface

M.M. Rahman, Z-T Jiang, C-Y Yin, L.S. Chuah, H-L Lee, A. Amri, B-M Goh, B.J. Wood, C. Creagh, N. Mondinos, …

Journal of Materials Science & Technology, Vol.32(11), pp.1179-1191

2016

DOI: https://doi.org/10.1016/j.jmst.2016.09.002

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Abstract

3d transition metal oxides based thin film coatings such as copper-cobalt oxides exhibit high absorption in the visible region and low emittance in the infra-red to far-infra-red region of the solar spectrum which is favourable for use as potential selective surface materials in photothermal devices. These materials have the potential to minimize heating while increasing absorption in the operative spectrum range and therefore achieve higher solar selectivity. A series of mixed copper-cobalt metal spinel oxides (CuxCoyOz) doped with graphene oxide thin films were deposited on commercial grade aluminium substrates using a sol–gel dip-coating technique at an annealing temperature of 500 °C in air for 1 h. Characterizations of the synthesized films were carried out by high temperature synchrotron radiation X-ray Diffraction (SR-XRD), UV-Vis, Fourier Transform infrared spectroscopy (FTIR) and X-ray photoelectron microscopy (XPS) techniques. High thermal stability of coatings with multiple phases, binary and ternary metal oxides, was defined through SR-XRD study. FTIR analysis shows moderate (<80%) to high (up to 99%) reflectance in the infra-red region while the UV-Vis investigations demonstrate that, in the visible region, solar absorption increases gradually (up to 95%) with the addition of graphene oxide to the CuxCoyOz coatings. With the incorporation of 1.5 wt% of graphene oxide to the copper-cobalt oxide coatings, a high solar selectivity of 29.01 (the ratio of the average solar absorptance in visible and the average thermal emittance in infra-red to far infra-red region; α/ε) was achieved.

Details

Title: Structural thermal stability of graphene oxide-doped copper-cobalt oxide coatings as a solar selective surface
Authors/Creators: M.M. Rahman (Author/Creator) - Murdoch University
Z-T Jiang (Author/Creator) - Murdoch University
C-Y Yin (Author/Creator) - Teesside University
L.S. Chuah (Author/Creator) - Universiti Sains Malaysia
H-L Lee (Author/Creator) - Universiti Sains Malaysia
A. Amri (Author/Creator) - Riau University
B-M Goh (Author/Creator) - Newcastle University
B.J. Wood (Author/Creator) - The University of Queensland
C. Creagh (Author/Creator) - Murdoch University
N. Mondinos (Author/Creator) - Murdoch University
M. Altarawneh (Author/Creator) - Murdoch University
B.Z. Dlugogorski (Author/Creator) - Murdoch University
Publication Details: Journal of Materials Science & Technology, Vol.32(11), pp.1179-1191
Publisher: Elsevier BV
Identifiers: 991005541717707891
Murdoch Affiliation: School of Engineering and Information Technology
Language: English
Resource Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Citation topics: 2 Chemistry; 2.76 2D Materials; 2.76.39 Graphene
Web Of Science research areas: Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering
ESI research areas: Materials Science