Sol-Gel Process in the Synthesis of Cobalt Based Metal Oxides as Solar Selective Absorber Thin Film Coatings for Photothermal Collector

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dc.contributor.authorAmri, Amun
dc.date.accessioned2016-02-25T01:54:52Z
dc.date.available2016-02-25T01:54:52Z
dc.date.issued2016-02-25
dc.description.abstractCobalt-based metal oxide thin film coatings have been successfully deposited on highly reflective aluminum substrates via sol–gel dip-coating process. The coating’s surface composition, surface topography and morphology as well their optical properties were probed using X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), scanning electron microscopy (SEM), and UV-Vis-Nir spectrophotometry, respectively. The XPS spectra indicated that the coatings contained the mixed cobalt based metal oxides. Topographical and morphological investigations showed that the copper-cobalt oxide coating had the roughest surface with contour in range of 120 nm compared with other two coatings. The copper cobalt oxide coatings also exihibed a distinct optical property and behaved as solar selective absorber. Variation in withdrawal rate and dip-drying cycles confirmed that the copper cobalt thin film coating had a very tuneable absorptance value with the highest absorptance (α=80.2%) was achieved when the coating was created using six times dip-drying cycles with the withdrawal rate of 120 mm/min. Simplicity and safe in the synthesis process as well as the optical features of the copper–cobalt coatings imply good prospects for future application as a solar absorber coating material for photothermal collector application, though they still need further engineering to improve optimal performance.en_US
dc.description.sponsorshipProceeding the Regional Conference on Chemical Engineering 2014 Yogyakarta, December 2-3, 2014en_US
dc.identifier.isbn978-602-71398-0-0
dc.identifier.otherwahyu sari yeni
dc.identifier.urihttp://repository.unri.ac.id/xmlui/handle/123456789/7935
dc.language.isoenen_US
dc.subjectcobalt based metal oxideen_US
dc.subjectdip-coatingen_US
dc.subjectsolar selective absorberen_US
dc.subjectsol-gelen_US
dc.subjectsurfaceen_US
dc.titleSol-Gel Process in the Synthesis of Cobalt Based Metal Oxides as Solar Selective Absorber Thin Film Coatings for Photothermal Collectoren_US
dc.typeUR-Scientific Work Lectureren_US

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