Influence of solvents on properties of solar selective coatings obtained by spray pyrolysis
Source abstract
Abstract
Solar selective coatings for solar thermal flat-plate collectors consisting of crystalline copper oxides and amorphous nickel oxide composites were obtained by robotic spray pyrolyzed deposition. The parameters were optimized for increased spectral selectivity (S): high solar absorptance and low thermal emittance. The coatings were deposited using nickel and copper acetate, dissolved in mixed solvents with various water: ethanol ratios. The coatings’ properties were characterized in terms of crystalline composition (XRD), surface morphology (AFM, contact angle) and optical properties (solar absorptance, thermal emittance and spectral selectivity). Considering the precursor solutions composition (solvent, wetting behaviour), the growth processes were modelled for two different systems: predominant hydrophilic and predominant hydrophobic. The high selectivity values (S > 30) of the optimized composite coatings were explained based on two parallel mechanisms: intrinsic absorption and multiple reflections generated when absorbers with controlled roughness are deposited.
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Research context
OpenAlex topics: Solar Thermal and Photovoltaic Systems · Solar-Powered Water Purification Methods · Transition Metal Oxide Nanomaterials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (18)
Show source-provided references
1. Bayati M R, Shariat M H and Janghorban K 2005 Renew. Energ. 30 216310.1016/j.renene.2005.02.003 ↗
2. Bayati M R, Zargar H R, Talimian A, Ziaee A and Molaei R 2010 Surf. Coat. Technol. 205 248310.1016/j.surfcoat.2010.09.046 ↗
3. Boström T, Jensen J, Valizadeh S, Westin G and Wäckelgård E 2008 Sol. Energ. Mat. Sol. C. 92 117710.1016/j.solmat.2008.02.014 ↗
4. Carlsson B 2007 Sol. Energ. Mat. Sol. C. 91 133810.1016/j.solmat.2007.05.011 ↗
5. Duffie J A and Beckman W A 2006 Solar engineering of thermal processes (New Jersey: John Wiley & Sons) 3rd ed., pp 175–201
6. Hongbing W, Hongwen S, Sumei W, Guangzhi C, Hou H, Hongwen G and Xiaodong M 2010 J. Nat. Gas Chem. 19 39310.1016/S1003-9953(09)60090-6 ↗
7. Isac L, Duta A, Kriza A, Manolache S and Nanu M 2007 Thin Solid Films 515 575510.1016/j.tsf.2006.12.073 ↗
8. Murakami K, Nakajima K and Kaneko S 2007 Thin Solid Films 515 863210.1016/j.tsf.2007.03.128 ↗
9. Nunes C, Teixeira V, Prates M L, Barradas N P and Sequeira A D 2003 Thin Solid Films 442 17310.1016/S0040-6090(03)00967-2 ↗
10. Oelhafen P and Schüler A 2005 Sol. Energ. 79 11010.1016/j.solener.2004.11.004 ↗
11. OjaAcik, Junolainen A, Mikli V, Danilson M and Krunks M 2009 Appl. Surf. Sci. 256 139110.1016/j.apsusc.2009.08.101 ↗
12. Singh P, Kumar A, Deepak and Kaur D 2007 J. Cryst. Growth 306 30310.1016/j.jcrysgro.2007.05.023 ↗
13. Souza E A, Landers R, Cardoso L P, Cruz T G S, Tabacniks M H and Gorenstein A 2006 J. Power Sources 155 35810.1016/j.jpowsour.2005.04.014 ↗
14. Validžić I L, Jokanović V, Uskoković D P and Nedeljković J M 2008 Mater. Chem. Phys. 107 2810.1016/j.matchemphys.2007.06.035 ↗
15. Valyukh I, Green S, Arwin H, Niklasson G A, Wäckelgård E and Granqvist C G 2010 Sol. Energ. Mat. Sol. C. 94 72410.1016/j.solmat.2009.12.011 ↗
16. Voinea M, Vladuta C, Bogatu C and Duta A 2008 Mater. Sci. Eng. B-Adv. 152 7610.1016/j.mseb.2008.06.020 ↗
17. Voinea M, Ienei E, Bogatu C, Chitanu G C and Duta A 2009 J. Nanosci. Nanotechnol. 9 427910.1166/jnn.2009.M46 ↗
18. Zemanová M, Chovancová M, Gáliková Z and Krivošík P 2008 Renew. Energ. 33 230310.1016/j.renene.2008.01.005 ↗